Top – 5 common FAQ’s

Please click on the below questions to view the answers

Top – 5 common FAQ’s

Ans. The primary objective of the consultation with Dr Anand Shroff, our LASIK surgeon, is to determine that whether you are a candidate for laser vision correction (LASIK), and if so, which procedure is most appropriate for you. He conducts various tests which determine this, including tests for vision quality post LASIK such as pupil size, reaction to know dim light situations, dry eye conditions etc. At the end of your consultation, Dr Shroff will discuss which procedure suits you the best, whether it is custom or wavefront LASIK, Bladeless LASIK etc. If you have not yet contacted us, we recommend you send us the following information to help you better: 1. Age 2. Current Refraction (spectacle numbers) 3. Lifestyle – outdoor, computers etc / profession 4. Any significant medical or eye history 5. An eye report / tests done
Ans. The LASIK procedure has been tested for a long time and over a million people undergo this procedure every year. Many published data proves that it does not have any long term effects. Dr Anand Shroff is a very meticulous surgeon. He will not advise LASIK for you if he has the slightest doubt about its results. Only when Dr Shroff is confident that you will benefit from it, is when he advises LASIK. This is why you will find Dr Shroff personally checking your eyes and taking the pre LASIK maps and data, unlike many centres that leave these steps to their juniors or technicians. Any event in your life which can change the internal eye optics such as getting a cataract or a retina problem is due to age, diabetes and other reasons. Yes, this would affect vision. But these events would have occurred respective of LASIK. These conditions are not related to LASIK and need to be treated independently. These are events which happen internally within the eye, while LASIK and EpiLASIK procedures work on the surface of the eye.
Ans. I do appreciate your concerns about the procedure. These are your healthy normal eyes we are talking about! That is why we use the finest technology and deliver successful results! What may help is visiting some sites like the US FDA website. This will help you at least identify centers with older lasers and you can learn more about the laser technology and how success rates differ for each type of technology. We too have this simplified on our site https://lasikindia.in/services-view/safety/. This is the reason why with our strict protocols and way of working we have never had any case of infection. Complications of LASIK include those from the technology like night vision problems. Complications of LASIK come from 4 sources:- Doctors inexperience: Our advantage: Dr Anand Shroff is the only eye surgeon from India training over 100’s of doctors every year in from world over on our technology. He is one of the longest experienced LASIK surgeons in India. Since Dr Anand is also primarily a corneal surgeon doing corneal transplants for many years even before doing LASIK, it helps us give excellent results. We have never had any problems surgically. Older technology: Our advantage: We have always offered the best available of that time to our patients because we value their eyes. Today, the laser we use is 5 times more expensive than other lasers available in value, however, we chose to offer the best in the world to our patients at a cost which is one fourth of what it is available in the other 5 places in the world viz. Germany, Switzerland, Finland, Japan and Kuwait. Complications of LASIK include those from the technology like night vision problems. Since our laser system is most advanced it has zero night vision trouble. In fact with our experience and reputation we have corrected complications of other centers. Center not having strict infection controls: Our advantage: We are the only eye hospital in India to be certified by the highest Healthcare body from JCAHO, USA. The committee gave the hospital a special certificate for exemplary performance in infection control. We have had ZERO cases of infection and are using complete disposables for the procedure. Patient not the ideal candidate: Our advantage: A thorough check up with the doctor himself. Other complications are more consequences of doing LASIK on an unsuitable candidate such as one who has dry eyes. So, dry eyes are another problem that you will read about. Again in our center, we check each and every patient quantitatively with a special dry eye test. If any patient is found to have dry eyes, then depending on the severity appropriate treatment is advised to the patients. For mild to moderate dry eyes we suggest Epi LASIK, a new procedure that you can read about on our website www.lasikindia.in. The only thing that we prepare our patients for is the event of needing a fine tuning of the treatment. This is rare, but still seen because, in spite of having done our best and taken all predictable objectives, we still cannot predict body healing. It sometimes can heal leaving behind a small number. In our experience we have seen up to 0.75 D usually. However, this is treatable and we offer to re treat this number free of cost in the first year. Hence, it only means that in rare cases LASIK may be in two steps. The rate of this re treatment or fine tuning in our center is less than 0.4% which in most centers is upto 20%. Other than this, we have not faced any other issues.
Ans. If planned well, you do not need more than 3-4 days in total. . If from out of Mumbai city and we plan that if Day 1 is the consultation with Dr Anand Shroff and Day 2 is the procedure (e.g. Friday and Saturday, then you may leave Mumbai on Tuesday). Those who are working and even if using the computers for long hours in the office, can plan to join work on Day 3. The schedule can also be planned well that you do not need more than a day’s leave from work, if Day 1 is consultation and Day 2 is the procedure e.g. Friday and Saturday, then you may join your office on Monday. Yes, do keep in mind that in the first week you may need to take frequent breaks from your PC and also use eye drops at work. We also prefer that you start driving only after 4-5 days when you are comfortable with your vision.
Ans. We are very pleased to offer you the finest, most individualized laser vision correction existing today, not available anywhere else in India. Instead of a ‘sales call’, it starts with a careful evaluation and concern of the health of your eyes, visual needs, and lifestyle. And instead of just performing the laser treatment, we’re committed to taking care of you after your procedure to ensure a great long-term result! Our laser treatments are customized using the most advanced laser technology in the world today – The Concerto 500 Hz laser technology, to produce consistent, safe and accurate vision results. Advantages of our technology over other lasers Saves upto 40% corneal tissue as compared to most lasers hence able to treat higher numbers much safer. Accuracy of treatment since we use the fastest laser – takes 1/5th the time that other lasers Precision, even if your eyes move during treatment- as this laser has the Fastest Eye Tracker, which tracks your eye at 500 times a second Faster healing and visual recovery -resume work on Day 2 Due to corneal savings we can treat patients which other centers cannot who otherwise on other lasers would have been left with a residual error (number) Many lasers have between -5.00 D and -7.00 D spherical and up to – 3.00 D cylindrical as their upper limit of a safe treatment, hence higher chances of residual errors. Our upper limit is -12.00 D spherical and – /+6.00 D cylindrical. Furthermore, LASIK is not only about the laser, but the experience and skill of the surgeon is extremely important. If that were not the case, then even an ordinary technician would have been treating your eyes! Dr Anand Shroff, is one of India’s leading LASIK surgeons. He is one of 5 course instructors in the world for our technology, and the only doctor from India He has over 17 years of experience in Wavefront LASIK He has performed over 15,000 LASIK procedures He has trained over 100 doctors every year from all over the world for this technology He was the first eye surgeon in India to use the Wavelight Allegretto Eye Q 400 Hz laser, which was our older laser He is the first and only eye surgeon in India using the Concerto 500 Hz laser, one of the finest advanced laser systems in the world

Planning for LASIK, Laser Eye Surgery in Mumbai, India

How good and safe is LASIK (laser) eye surgery in India, Mumbai?

Anywhere in the world, the safety norms remain the same. Safety should be your first concern, as it is ours also! You need to look out for a centre with a good reputation, credibility in the field, with surgeons of experience and using new advanced lasers for laser eye surgery or LASIK.

It is a ‘surgery’ at the end of the day. To have a successful outcome there is not one factor but several that need to be looked into. You not being the ideal candidate, or the surgeon not having enough experience, or the laser being outdated or not kept in its optimal condition, infection control methods in the Clinic or centre, these are just some factors where things can go wrong. This does not depend on region or country in general. India, in fact, has access to the latest technologies even before the USA in this field, in most LASIK lasers. However, there may be certain adverse effects or complications that you must be informed about. Read more on https://www.lasikindia.in/complications/ for the same.


Which is the best hospital/clinics for LASIK surgery in Mumbai?

It is natural for me to answer Shroff Eye Hospital in Mumbai with Dr Anand Shroff. However, there is a reason why we are proud to make such claims!

Why choose Shroff Eye Mumbai?

Our doctor — Dr Anand Shroff

  • Most experienced in Wavefront LASIK in India, over 20 years of experience
  • Performed over 30,000 treatments and continuing
  • Has trained over 100 doctors from all over the world for this technology in Germany
  • First in India to use the Wavelight Allegretto Eye Q 400 Hz laser,  our former laser
  • First and only eye doctor in India to use the Concerto 500 Hz laser

Our Technology

Wavelight 500 Hz excimer laser + The Zeiss VisuMax femtosecond laser

  • One of few centres in the world to use the best laser platforms – The Wavelight 500 Hz excimer laser + The Zeiss VisuMax femtosecond laser
  • Customized treatments based on the person’s needs, corneal shape, eye data, spectacle numbers and even age requirements to give a precise result

Our Centre

  • The first Eye Hospital in India certified by the Joint Commission International [JCI], USA
  • Trained Engineer runs checks on the Laser before every treatment, which ensures accurate results

How much does LASIK (laser eye surgery) cost in Mumbai?

 The cost of surgery not just in Mumbai, but all over the world in different cities will differ. The reasons being different lasers, different technologies, and expertise of surgeons, whether it is a single user centre or many doctors share the same laser…all these matters in terms of cost.

Try and avoid ‘shopping’ online for this. But make decisions on information which is ethical, honest and where you have trust. You may find LASIK as low as Rs 20,000/- but then you will wonder why it is so cheap? and then again you may find it as high as above 1 lakh, and again you may wonder why so expensive?

Hence, do not base your decisions on cost.

Focus more on the pre-laser eye surgery examination or evaluation where it is important for you to find out if you are suitable for laser eye surgery and which type is suitable for you. The advantage at Shroff Eye Mumbai is the experience of Dr Anand Shroff, his two laser platforms which cover the entire range of laser eye surgeries such as Wavefront or custom LASIK, Contoura LASIK, Bladeless LASIK, Relex Smile, PRK, Advanced surface ablations like Epi-LASIK and therefore he can fit the best-suited surgery for your eyes.

This is the reason we treat patients looking for laser eye surgery from various countries/ cities such as USA, UAE, Dubai, Kuwait, South Africa, Lusaka, Zambia, Durban, Sudan, Singapore, Hong Kong, Malaysia, Vietnam, UK, London, etc.

Write to us at info@shroffeye.org for the current rates at Shroff Eye Mumbai.


How many days can I expect to stay in Mumbai?

 If planned well, you need not spend more than a weekend. For example, if the checkup is done on Friday, laser eye surgery on Saturday, then follow up on Sunday, you may fly out on Monday evening. If in Mumbai for longer, then Dr Shroff will see you again.


Do I need any follow up when I leave your country and reach my hometown?

Not usually, other than the annual eye examination for general health of the eyes. When in Mumbai, we do this check ourselves for continuity of care.


Do you charge differently for overseas patients to local private patients? What percentage of overseas patients do you have?

 Our fees are the same for those living anywhere in the world or from different nationalities. We do not charge extra unlike some hospitals for NRI patients.


What sort of accommodation do you offer? Is there any at the clinic or is it a particular Hotel you are affiliated with? What would be the approximate daily rates?

Ours is a daycare centre with no overnight accommodation, however, if necessary we can send you a list of names of hotels nearby who offer a special rate less than their rack rate for Shroff Eye patients. Do write to us on info@shroffeye.org for this information. When we help schedule your appointments we can help you with this information too.


How much notice is required? 

To ensure the availability of our doctor, please write to us before booking your flights.

This examination procedure takes about two hours in our centre and the only important instruction you need to follow is to be off soft contact lenses for about 3-4 days before the examination and off hard or semi-soft contact lenses for about 3 weeks.


Can I do the pre-evaluation in my country or town before visiting Mumbai, India?

Even if you do, it will be mandatory for us to rely on our own examination findings hence necessary to repeat tests. Some with high powers still undergo the tests in their country to get an idea regarding their candidacy or eligibility for the laser eye surgery. You may share the same with us for a free opinion.


After how many days will it be safe to travel to my hometown by train or flight after the laser eye treatment? 

The LASIK procedure is usually planned on fixed days, once or twice a week and you need to inform us a week before for scheduling the date and confirm the availability of Dr Shroff. Therefore recommended checking his schedule before booking flights. The surgery time is not more than few minutes per eye and you can return to your hotel/ home immediately after our team has explained the medication eye drop schedule. We need to definitely see you for a post LASIK check up preferably the next day and once again only if still in Mumbai. Those who live close to Mumbai (like Pune, Nashik etc) usually go home the next day after their examination and then seen again after 7 to 10 days. It is safe to take a flight, train, bus after three days of LASIK or laser eye surgery.


Can I travel within India on a holiday immediately after LASIK? 

After three to four days, yes, it is safe to travel. The instructions will remain the same geographically! There will be eye drops that you need to use. Some activities may be delayed depending on the type of laser eye surgery you have undergone. For example, swimming/ scuba diving will be allowed almost immediately in ReLEX smile surgery and after few weeks in LASIK, unless it is just wading in the pool/ sea with necessary precautions. This needs to be discussed with us.

When can I go to gym after LASIK or Laser Eye surgery?

Gymnasiums are a source of infection and allergies especially because of harboring bacteria due to sweat.  Therefore it is important to wash your hands before touching your face when working out after LASIK. Try and also avoid touching the eyes with unclean hands which have touched gym equipment. If the eyes are itchy or sensitive, avoid workouts till eyes feel asymptomatic.

You can restart simple exercises, like running and lifting light weights, after about two or three days following a laser eye LASIK surgery. Avoid strenuous or heavy workouts like lifting heavy weights as this may strain your eyes causing discomfort which may also worry you. Begin slowly and increase the intensity over the next two weeks.

When can I resume serious exercises and Martial Arts, Kickboxing, and training for a marathon, cycling, weight training etc?

Most of the heavyweight exercises can start with light weights by day three and increase slowly over the next two weeks. Safely two weeks after laser eye surgery, one can resume most activities.

The important points to be careful of are: Avoid infection and a wrinkled or displaced flap.  For this, the principle to follow is never touching your eyes with unclean hands…ever!

One tends to squeeze your eyes when you strain during a workout, hence best to wait for three days or so.

What if sweat enters my eyes after laser eye LASIK surgery?

Sweat in your eyes can cause irritation. Avoid getting this by using clean napkins to dab away the sweat, headbands etc. If sweat does happen to get into your eyes when working out, do not rub your eyes as it can cause blurred vision and discomfort.

Make sure that you have your eye doctor’s permission to do all the workouts and sports activities before you resume any exercise or sports

When can I swim after Laser Eye Surgery?

Swimming, in general, is safest after 3-4 weeks of LASIK or a laser eye surgery where a ‘flap’ has been made. It is also best to always use swimming goggles in chlorinated pools to protect the eyes from allergies post swimming.
Many undergo LASIK or laser eye surgery during their vacation and time may be spent near a beach or a pool. It is alright to ‘wade’ in the water with swim eyewear, or if just ‘lounging’ by the pool, with sunglasses within a few days of the treatment.

What should I do if the swimming pool or sea water enters my eyes?

If the eyes smart or sting do not worry, that is normal. Important is not to rub eyes hard. Clean the eyes with fresh clean drinking water if pool or sea water enters the eyes. Then use the eye drop that you are using as per the prescribed schedule. If none, then use any moisturizing or artificial tear eye drop for few times that day till symptoms subside.

When can I go scuba diving or white water rafting or other water sports after laser eye surgery?

The ideal time would be 3-4 weeks post surgery. However, if you are a professional swimmer or athlete that needs to get back in the water immediately, then speak to Dr Anand Shroff, our laser eye surgeon, as he may recommend ReLex Smile laser eye surgery over LASIK in certain cases. Your eyes are more susceptible to irritation and allergies for few weeks after the laser surgery, so do be careful. Hot tubs for example are sources of infection, so avoid them for the first month.

For how long should I use swimming goggles after laser eye surgery?

It is interesting that one expects to discontinue using good measures and precautions that safeguard your eye health in general! It is important for you to always protect your eyes with good swimming goggles or eyewear. This has nothing to do with LASIK or Laser eye surgery, but is a good habit in principle to keep away allergies and infections.

What should I do if my eyes turn red after a swim?

This is usually temporary if the eyes have opened in the chlorinated water or water has splashed inside the eye or if you have rubbed your eyes hard. If you are still using eye drops, continue the same. Those using moisturizing eye drops or artificial tear eye drops can use them a few times this day. If the redness persists, or starts itching, with tearing and discharge, then it is best to see your eye doctor to rule out infection.

When can I wear eye makeup before and after LASIK Laser Eye Surgery?

Makeup, in general, should not be used on the day of laser eye surgery, not even perfume as it affects the laser energy. The eye makeup should be removed before laser eye surgery. Lipstick and moisturizer are fine to use on the day of LASIK, but no eye makeup.
After Laser eye surgery, the eye makeup like mascara, eyeliner, kajal, eyeshadow should be avoided for at least a week to 10 days as there is the treatment of eye drops post LASIK going on and chances of infection or allergies increase with its use.
After LASIK make up like lipstick can be started next day, face light makeup also is fine to use, however eye makeup should be avoided.
Some use heavy eye makeup or use stick on eyelashes due to their profession as actress or cabin crew. They should avoid for at least 7 days. The most important thing is also how to remove eye makeup, without it going inside the eyes. Use good eye makeup remover and clean in an outward motion from nose to ear direction in sweeps.

What to do if makeup enters the eyes?

If makeup enters the eye, wash eyes with clean water. Shut the eyes for a few minutes. If you have access to eye drops, or if using some schedule post LASIK or laser eye surgery, then use the eye drops from your prescription. Otherwise, use any artificial tears or moisturizing eye drops to soothe the eyes.

When can I start applying heavy makeup or do a facial after LASIK or Laser eye surgery?

Usually, the safe time is after 10 days or 15 days of the laser eye surgery. Also, it is good to use the same makeup brands that you know you are not allergic to or which you have used in the past like hypoallergenic makeup. Do not experiment with new makeup after surgery.

When can I put water in my eyes after LASIK or after any type of laser eye surgery?
Washing eyes after surgery or even before surgery is not a good habit and not advised by the eye doctors, but you may wash your face with eyes closed the next day after LASIK using your usual face wash or mild soap. If accidentally water enters the eye, do not worry. But do not rub eyes hard. Also, the only time you should wash eyes is if something goes inside, like makeup or creams.

What to do if tap water gets into the eyes?

The water may sting your eyes as it would even otherwise. It is, however, not a good idea to purposefully wash your eyes or splash water in your eyes. It is questionable that tap water is free from bacteria. It also washes away your natural tears which protect your eyes.

REQUIRED VISUAL STANDARDS FOR INDIAN ARMY, INDIAN NAVY, INDIAN AIR FORCE

After a candidate clears the SSB Interview, he/she is expected to undergo a Medical Examination held at the medical boards. Only the candidates who are declared fit by the medical authorities are eligible to join the Training Academy. In this article we are going to share details about Required Visual Standards for Indian Army, Indian Navy, Indian Air Force.

VISUAL STANDARDS FOR INDIAN ARMY

The eye sight requirement for the post of officer in Indian army is mentioned below:

  1. Uncorrected without glass – 6/12
  2. Corrected with glass – 6/6
  3. Limits of Myopia – 3.5
  4. Limits of Hypermetropia – +2.5
  5. Binocular vision III
  6. Limits of Colour Perception I
  7. A candidate should be able to read 6/6 in a distant vision chart with each eye with or without glasses. Myopia should not be more than 3.5D and hypermetropia not more than 3.5D including Astigmatism. For women candidates the minimum acceptable visual acuity are: Distant vision (corrected)better eye 6/6 worse 6/18, Myopia of not more than minus 5.5 including Astogination.
  8. Internal examination of the eye will be done by means of ophthalmoscope to rule out any disease of the eye. A candidate must have good binocular vision. The colour vision standard will be CP-III for Army A candidate should be able to recognise red and green colours.
  9. Candidates who have undergone or have the evidence of having undergone Radial Keratotomy, to improve the visual acuity, will be permanently rejected.
  10. Candidates who have undergone LASER Surgery for correction of refractive error will be considered for commission in Army if they fulfill following criteria :-
  11. Age more than 20 years.
  12. Uncomplicated stable LASIK/Excimer (PRK) laser procedure done for Myopia or Hypermetropia, with stable refraction for a period of six months after the procedure.
  13. A healthy retina.
  14. Corrected vision should be 6/6 in better eye and 6/9 in worse eye, with maximum residual refraction of + 1.50 in any meridian for myopia or hypermetropia.
  15. Axial length within permissible limits.

VISUAL STANDARDS FOR INDIAN AIR FORCE

  1. One must have 6/6 in one eye and 6/9 in other, which can be correctable to 6/6 only for hypermetropia.
  2. Near Vision must be N-5 each eye.

Near vision is determined using “Times Roman” type and is assessed at reading distance (30-50 cm) and at 100 cm. The 100-cm distance is important in the aircraft cockpit and similar environments and for users of CRT displays. When two values are shown, such as N5 and N14, the first value refers to the reading distance (30-50 cm) and the second value to the 100-cm distance.

Color Vision must be CP-1(ML T). Color Perception-1: The correct recognition of coloured lights shown through the paired apertures on the Holmes-Wright lantern at LOW BRIGHTNESS at 6 metres (20 feet) distance in complete darkness.

LASIK Surgery

LASIK Surgery for correction of vision is admissible in Transport and Helicopter streams of Short Service Commission (Flying Branch) If the following condition are fulfilled at the time of Air Force medical examination.

  1. LASIK Surgery should not have been carried out before the age of 20 years.
  2. The axial length of the eye should not be more than 25.5 mm as measured by IOL master.
  3. At least twelve months should have lapsed post uncomplicated stable LASIK. No history or evidence of any complication.
  4. The post LASIK corneal thickness as measured by a corneal pachymeter should not be less than 450 microns.
  5. Individuals with high refractive errors (>6D) prior to LASIK are to be excluded.
  6. Candidates must not suffer from colour or night blindness.
  7. Ocular Muscle Balance: Eyes should be well aligned and should have normal binocular vision. No manifest squint permissible. Convergence must be adequate. Ocular movements full and free Ocular muscle balance can be tested with the cover test, the Maddox rod or an approved vision tester.

At 6 meters

  • Exophoria 6 prism Diopters
  • Esophoria 6 prism Diopters
  • Hyperphoria 1 prism Diopters
  • Hypophoria 1 prism Diopters

At 33 cm

  • Exophoria 16 prism Diopters
  • Esophoria 6 prism Diopters
  • Hyperphoria 1 prism Diopters
  • Hypophoria 1 prism Diopters


VISUAL STANDARDS FOR INDIAN NAVY

(a) Uncorrected without glass 6/12

(b) Corrected with glass 6/6

(c) Limits of Myopia -1.5

(d) Limits of Hypermetropia +1.5

(e) Binocular vision Ill (f) Limits of Colour Perception

 

Source: http://ssbcrackexams.com/required-visual-standards-for-indian-army-indian-navy-indian-air-force/



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Indian Air Force Vision Medical Standards

One must have 6/6 in one eye and 6/9 in other, which can be correctable to 6/6 only for hypermetropia.

Vision Defects

  • Manifest hypermetropia must not exceed +2.0D Sphere.
  • No Myopia.
  • Astigmatism must be +0.75 D Cyl with +2.0 D maximum
  • Near Vision must be N-5 each eye.

Near vision is determined using “Times Roman” type and is assessed at reading distance (30-50 cm) and at 100 cm. The 100-cm distance is important in the aircraft cockpit and similar environments and for users of CRT displays. When two values are shown, such as N5 and N14, the first value refers to the reading distance (30-50 cm) and the second value to the 100-cm distance.

Color Vision must be CP-1(ML T). Color Perception-1: The correct recognition of coloured lights shown through the paired apertures on the Holmes-Wright lantern at LOW BRIGHTNESS at 6 metres (20 feet) distance in complete darkness.

LASIK Surgery

LASIK Surgery for correction of vision is admissible in Transport and Helicopter streams of Short Service Commission (Flying Branch) If the following condition are fulfilled at the time of Air Force medical examination.

  1. LASIK Surgery should not have been carried out before the age of 20 years.
  2. The axial length of the eye should not be more than 25.5 mm as measured by IOL master.
  3. At least twelve months should have lapsed post uncomplicated stable LASIK. No history or evidence of any complication.
  4. The post LASIK corneal thickness as measured by a corneal pachymeter should not be less than 450 microns.
  5. Individuals with high refractive errors (>6D) prior to LASIK are to be excluded.
  6. Candidates must not suffer from colour or night blindness.
  7. Ocular Muscle Balance: Eyes should be well aligned and should have normal binocular vision. No manifest squint permissible. Convergence must be adequate. Ocular movements full and free Ocular muscle balance can be tested with the cover test, the Maddox rod or an approved vision tester.

At 6 meters

Exophoria 6 prism Diopters

Esophoria 6 prism Diopters

Hyperphoria 1 prism Diopters

Hypophoria 1 prism Diopters

At 33 cm

Exophoria 16 prism Diopters

Esophoria 6 prism Diopters

Hyperphoria 1 prism Diopters

Hypophoria 1 prism Diopters

Do powers or numbers come back after LASIK surgery

Do powers or numbers come back after LASIK surgery? How can we prevent this and what can be done if they do come back?

Let us say that you had LASIK surgery and achieved 6/6 or 20/20 vision, then many patients want to know how long does this result last? And are there any chances that their spectacle powers would regress?

LASIK surgery is a permanent treatment. What change it creates in the shape of the cornea is permanent.

However, the way you use your eyes is a dynamic process. Even if the LASIK was successful and you achieved 6/6 post procedure, to remain 20/20 there are certain basic guidelines that one must follow.

Remember that LASIK was done to achieve clear distant vision. If you end up doing a lot of near work, especially continuous hours of computer related work, then you stand the risk of again changing your distant prescription which is zero after LASIK and can shift by a small power of -0.50 D to -1.00 D if you end up straining your eyes for near work. Hence, in our centre at Shroff Eye, Dr Anand Shroff, our LASIK surgeon examines your eyes personally for a LASIK treatment and advises how you can avoid getting this regression, which may include specific steps of how to sit in front of a computer screen and use computer anti fatigue glasses specific to your viewing distance. This is taught to you post LASIK, at our centre.

However, other than the most common reason for shift of powers, which is computers, there are other factors which also play a role in eye health.  Vision can deteriorate if any other event happens inside the eyes, example the start of a cataract or retinal issue or need for reading glasses (presbyopia) which is a natural aging process in the eyes. Although this is totally unrelated to LASIK, and would have happened with the same possibility when you use glasses or contact lenses, many link it to a LASIK done many years ago. This is not true. The start of any internal eye disease is not linked to your LASIK.

In women, it is also important to mention the use of hormones for treating acne or even infertility etc. In such times, hormones in very rare cases may also cause a shift in myopia.

In those with very high myopia or high astigmatism or cylindrical powers, we prepare them with the small possibility of needing a fine tuning or retreatment procedure, also called enhancement. This is usually done not before 3 months of the LASIK, giving enough time for the corneal healing to be complete.  Also, this re treatment does not mean repeating all steps done the first time, but in most cases just needs specific instruments to lift the previously prepared flap and a very short laser application to remove the power. In those where the flap lifting is doubtful, a PRK procedure can be done as a surface treatment.

Therefore, it is important to choose a primary LASIK treatment with an advanced laser, such as what we use at Shroff Eye, the 500 Hz Wavelight laser that helps score over others as it has corneal tissue saving capacity. Hence it is possible to retreat whenever required.
In many cases, people who experience minor number changes after LASIK are not bothered by the small power and do not feel the need for wearing glasses, except for specific tasks like night driving, where it is used more for safety. Some choose to undergo a retreatment whenever possible, for example the rate of re treatment in our LASIK centre with Dr Anand Shroff is less than 0.4% of our cases and most often the fee is not charged again.

Technical differences between various excimer lasers

 

Most excimer lasers-

Wavefront LASIK

Ex- 500 – Contoura™ LASIK with Occulyzer + Topolyser Vario

(only at Shroff Eye, Mumbai)

 
1) Synchronized eye trackers @ 500 Hz = 6 millisecs response time @1050 Hz

Laser falls on programmed target

Therefore feedback time which is a response time of 2 millisecs
2)                        – 3  times sturdier laser lead With Topolyzer Vario

→ Cyclotorsion for cylinder

≥  -1.5D

3) open to environment Sealed optics stable energy Auto neuro tracking and infrared camera in both topolyser and the laser. Also has a pupillometer for night vision issues. = Contura vision. Detects iris landmarks. Any from vertical to supine position means that eye rotates; therefore the compensation needs to be done. No human error as no punching of work. It is transferred software to software. The diagnostic and live image software overlaps to find differences and adjust those differences

 

 

Ex 500 Mel 90 Mel 80
1) 500 Hz 1) 250→500Hz 1) 250Hz
2) Wavefront optimized treatments. Does not induce higher order aberrations and maintains spherical profile 2) Becomes oblate and induces spherical aberrations

 

 

 

2) Becomes oblate and induces spherical aberrations

 

 

3) ASA + Corneal saving

FDA approved -12.00D

-14.00 D internal

CE approval.

Astigmatism ±5.00 D

±6.00 D internal

 

Optical zone 8.5 mm

True optical zone 6.5mm

 

 

AAA algorithim claims to do ASA + corneal save

Not FDA approved

 

 

 

 

 

 

ASA and tissue saving

Maintain natural aspherically

 

more corneal aberrations

 

though issue saving option

You will save tissue but not maintaining asphericity

6 D eye tracker

6 sigma multispectial eye tracker

 

3D tracker

 

3D tracker

 

With slit lamp

Online Pachymetry

No integrated slit lamp

No online Pachymetry

 

 

No integrated slit lamp

No online Pachymetry

 

 

Topography linked treatments were used earlier on cases who had some laser treatment done on their cornea. Not used as Primary treatment.

But now with Contoura, it is the only FDA approved Topography treatment to be used as a primary LASIK treatment.

Topography LASIK address the corneal irregularities as most aberrations are from cornea.

 

 

With contura one can expect gain in line of acuity in 30% cases.

At Shroff Eye we have the diagnostics which no centre has ie. the Occulyzer plus the Topolyser Vario. This is important to detect early Keraconus.

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