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LASIK Surgery - Treatment, Procedure And Side Effects

What is the treatment?

LASIK stands for laser in-situ keratomileusis. This surgery is used to rectify vision problems in people who suffer from farsightedness (hyperopia), nearsightedness (myopia) or astigmatism.

LASIK, like any other refractive surgeries, works by restructuring the cornea of the patient i.e. the clear front part of the eye. This allows the light entering the eye to be properly focused on the retina for a clearer vision.

An ophthalmologist performs this surgery by using a laser or a microkeratome (a surgical instrument).

In the majority of the cases, performing a LASIK surgery on both eyes can take up to 15 minutes. This treatment is painless and provides the patient with improved vision. Also for most patients, this surgery offers a permanent solution to wearing contact lenses or eyeglasses.

How is the treatment done?

The treatment includes the following steps:

  • The eye surgeon primarily creates a circular, thin ‘flap’ in the outer layer of the cornea.
  • For doing so, the surgeon uses a surgical mechanical tool known as femtosecond laser or microkeratome.
  • The surgeon then lifts the flap in order to access the ‘stroma’, i.e. the underlying layer of the cornea. He/she then removes some corneal tissues with the help of an excimer laser.
  • The excimer laser uses an ultraviolet beam of light to remove a microscopic amount of the corneal tissue. This allows for the reshaping of the cornea thus allowing light to be focused more accurately on the retina. This improves the vision.
  • People who suffer from myopia, the cornea is flattened whereas people who suffer from hyperopia the corner is made comparatively steeper.
  • This treatment is also used to cure astigmatism where the irregularly shaped cornea is smoothened into a more standard shape.
  • After the cornea is reshaped, the flap is put back into its place. This successfully covers the operated area and allows the cornea to heal naturally.
  • Topical anesthetic drops are required during this surgery. Post-surgery, no stitches or bandages are needed.

Who is eligible for the treatment? (When is the treatment done?)

A person is eligible for the treatment when:

  • He/She is suffering from farsightedness, nearsightedness and astigmatism problems.
  • He/She Is aged 18 years or above.
  • He/She does not suffer from any eye conditions that can negatively influence healing like strabismus (muscle imbalance), amblyopia (lazy eye), etc.

Who is not eligible for the treatment?

People who are not eligible for the LASIK surgery are:

  • An individual having eye diseases like keratoconus, cataracts, glaucoma, corneal disease, herpes simplex, herpes zoster along with certain optic nerve and retinal diseases or infections.
  • Individuals with a history of eye injuries or infections.
  • Pregnant or nursing women are not eligible for the surgery.
  • Patients suffering from dry eye conditions should avoid LASIK treatment

Are there any side effects?

After the surgery, some patients usually experience discomfort. However, it only remains for a day or two. Apart from these, there are several other side effects, but they are very rare. The side effects are -

  • Loss of vision – This is a very rare side effect of LASIK. As per research, 1 in 10000 suffers from loss of vision.
  • Seeing halos, starbursts, ghostlings – These visual problems are referred to as higher order aberrations. While some associate them with post-surgery consequences others believe that these problems are present pre-surgery. Aberrations largely depend on the size of the pupil. A person who underwent LASIK surgery may face these aberrations post sunset when the pupil tends to dilate. However, this happens on rare occasions.
  • Dry eyes – Some people may experience dry eyes post LASIK surgery.
  • Several other complications which may arise post-surgery include infection, flap complications, corneal scarring, retinal detachment, slipped flap, Diffuse lamellar keratitis, etc.

What are the post-treatment guidelines?

The post treatment guidelines include the following:

  • Patients should take enough rest and avoid exerting pressure on their eyes.
  • It recommended wearing dark eyeglasses, protective goggles to prevent harsh lights from entering the eye and rubbing the eyes. It also helps to cure dry eyes which are a side effect of LASIK.
  • Patients are recommended to follow the course of anti-inflammatory and antibiotic eye drops as prescribed by the doctor.
  • Patients should also use eyes drops as prescribed by the doctor to keep their eyes moisturized.

How long does it take to recover?

Eyes start to heal immediately after the surgery. One may start having improved vision within 24 hours post surgery. However, the entire recovery process continues for a longer period of time. It usually varies between 3-6 months depending on the condition of the patient. It will thus allow him/her to live a healthy life with better eyesight.

What is the price of the treatment in India?

The price of LASIK treatment falls in the range of Rs.5000/-Rs.100000/-.

Are the results of the treatment permanent?

LASIK treatment in the majority of the cases provides with permanent improvised vision. A rare percentage of people again face the problems in the long run. However, such consequences may arise due to the change of the lens within the eye. While some people don’t feel bothered by the changes, few may feel the need to wear prescription eyeglasses or opt for a LASIK enhancement surgery sometime in the future.

What are the alternatives to the treatment?

LASIK Surgery has both surgical and non-surgical alternatives. The surgical alternatives include Wavefront-Guided LASIK, Photorefractive Keratectomy (PRK), LASEK (Laser-Assisted Sub-Epithelial Keratectomy), Refractive Lens Exchange, EpiLasik, Corrective contact lenses, Laser Thermal Keratoplasty, Radial Keratotomy, Conductive Keratoplasty and many more. Non-Surgical alternative includes Overnight Vision Correction.

Safety: High Effectiveness: High Timeliness: Very High Relative Risk: Low Side Effects: Medium Recovery Time: Medium Price Range: Rs. 5000 - Rs.1,00,000

Popular Health Tips

LASIK - How It Helps In Removing Specs?

MS - Ophthalmology, MBBS
Ophthalmologist, Noida
LASIK - How It Helps In Removing Specs?

Refractive surgery is the term used in describing various surgical procedures to correct vision problems like near-sightedness, far-sightedness, presbyopia and astigmatism. This surgery can be performed in order to reduce the dependence on prescription lenses. There are a few kinds of refractive surgeries that can be performed among which LASIK surgery is the most common. Other types of refractive surgeries include intraocular lens procedures, which maybe more beneficial according to the needs of the individuals.

LASIK surgery
In this surgical procedure, near-sightedness, farsightedness, presbyopia and astigmatism can be corrected by laser. A microkeratome blade or a femtosecond laser is used to create a thin flap in the cornea. The corneal tissue underneath the flaps is then removed using excimer laser. After this, the flaps are laid back in place, thereby covering the removed corneal tissue. In case of near-sighted people, LASIK is used in order to flatten the cornea, which is too steep and in case of farsighted individuals, steep cornea is required. Also by smoothing irregular cornea, astigmatism can be corrected.

In order to consider LASIK eye surgery, one should first evaluate if the LASIK surgeon is right for them or not. After this, the procedure includes an examination of eye health, the kind of vision correction required, and the amount of corneal tissue removal required. Determination of other health factors that may cause disqualification of LASIK surgery is also necessary or there may be hazardous circumstances.

Other laser surgeries
It may so happen that an individual might not be qualified for LASIK. However, they might qualify for other laser eye surgeries like photorefractive keratectomy (PRK), LASEK and Epi-LASIK.

Other options
Individuals can also opt for surgeries that are non-laser for correction of their vision. An individual’s eye-structure and prescription are considered in order to determine what procedure would suit them best.

Common facts about LASIK

  1. It is a procedure which is outpatient, which means that individuals do not have to stay overnight at the surgery centre.
  2. This surgery usually requires less than 10 minutes and does not require anaesthesia. So individuals are generally awake during the surgery. In case of cornea reshaping, each eye requires about one minute.
  3. This surgery does not require time to heal. The healing process starts almost immediately after the procedure is completed. However, individuals may experience blurred vision and fluctuations in vision for a few weeks.
  4. It is important that individuals schedule regular follow-ups after the surgery. Vision usually becomes stable and entirely clear within a period of six months. In case you have a concern or query you can always consult an expert & get answers to your questions!
2817 people found this helpful

LASIK - Will It Benefit You?

Ophthalmologist, Delhi
LASIK - Will It Benefit You?

The eyes are such a complex structure that even minute changes in the extremely complicated internal structure affects the most important function of the eye, vision. And anyone with a vision problem can vouch for the extent of effect it has on the quality of life. Whether you are able to see only things at a close distance or far off, it is definitely difficult.

The good news, however, is that with the thorough understanding of the eye’s structure, these abnormalities can be corrected and absolutely normal vision can be restored. While surgery was the only mode of correction a few decades ago, but laser has come to rescue, especially in intricate structures like the eye.

LASIK is an abbreviation for laser in-situ keratomileusis. This is the most common and popular method to correct vision in errors of refraction. In all these conditions (as below), the cornea which is the clear portion in the front of the eye is affected.

The light passes through the cornea, lens and falls on the back of the eye (retina), where an image is created, sent to the brain where it is reversed, and this is what we ‘see.’ Each of these parts have to be in perfect condition in order to produce this proper sight. Errors of refraction fall into three main categories.

  1. Nearsightedness: There is difficulty in seeing far off objects, so road signs and boards are difficult to follow. Seeing objects that are closer is not affected. Most important cause is excessive staring into computer monitors.
  2. FarsightednessThe person has difficulty seeing things that are nearby and has to hold them at a distance for clarity.
  3. Astigmatism: Light rays merge to focus on multiple points either in front of or behind the retina. Normally, however, they should focus on a single point on the retina. There could be blurred vision, squinting, and eye strain.

What is done?

During the laser surgical procedure, ultraviolet laser beam is directed at the cornea. It is reshaped - made thinner in nearsightedness, elongated in farsightedness, and restoring the normal shape in astigmatism. This ensures that light is focused properly on the retina, producing sharp images and restoring vision.


  1. Success rate as high as 96% - most patients no longer need the glasses or contacts they were using earlier
  2. Minimal pain
  3. Immediate correction of vision
  4. No stitches required
  5. Further adjustments to vision using glasses or contact lenses can be made if required

While errors in refraction are extremely common, there is no reason to panic. Corrective measures are also available, which can restore an almost normal vision. If you wish to discuss about any specific problem, you can consult an ophthalmologist.

2492 people found this helpful

LASIK - Say No to Boring Glasses!

Ophthalmologist, Thane
LASIK - Say No to Boring Glasses!

While spectacles are a fashion statement for some people, for others they are an uncomfortable necessity. Though contact lenses may be a little more aesthetically pleasing they too can be quite uncomfortable and cannot be worn throughout the day. Thankfully, there is a third way to correct vision. Laser surgery or LASIK, it is a popular refractive procedure that can correct common vision problems, such as nearsightedness, farsightedness and astigmatism. This procedure aims at reshaping the cornea so that light entering the eyes can be focused onto the retina for the person to have a clearer vision. 

Laser surgery is pain-free and quick in most cases. Usually, it does not take more than 15 minutes to correct vision in both eyes. The results of this surgery can be seen in as little as 24 hours. 

The first step of laser surgery to correct vision is to create a thin, circular flap in the cornea. This is then folded back to access the stroma or underlying cornea. An excimer laser is then used to remove some of the corneal tissue. For people suffering from nearsightedness, the cornea is flattened while for people suffering from farsightedness, the cornea is made steeper. In cases of astigmatism, an irregular cornea is smoothened. Once the correct gradient has been achieved the corneal flap is put back into place and the cornea is allowed to heal naturally. There are no stitches or bandages required in a laser eye surgery. You may feel a temporary burning or itching sensation in your eyes immediately after the procedure. It is important not to rub your eyes or place any pressure on them. Your vision may also be cloudy or blurred for the first few hours. A doctor will usually advise you to rest for a few days after the surgery so that your cornea can heal properly. In a few days, your eyesight should stabilize, though, in a few rare cases, it may take a little longer. You should also avoid any form of strenuous exercising for a few days after the surgery. 

Though LASIK surgery has a very high success rate, there are very rare occasions where spectacles may still be needed even after the surgery. Thus LASIK is a choice of treatment for many who seek freedom from glasses. If you wish to discuss about any specific problem, you can consult an ophthalmologist.

4304 people found this helpful

LASIK - Dispelling Myths About It!

Ophthalmologist, Thane
LASIK - Dispelling Myths About It!

One of the most cutting edge eye procedures which has been very successful in practice and has been loved by millions of patients is LASIK. LASIK is a form of eye surgery performed with the help of a precise laser and is very effective in correcting nearsightedness, farsightedness as well as astigmatism (imperfections with the shape of the cornea). With any such procedure, there are bound to be myths which arise out of misconceptions. Some of those myths as well as the advantages of LASIK have ben enumerated below:

Myth # 1 – Lasik can only be performed up to a certain age
Many people think that LASIK cannot be performed on people of advanced age. This is a misconception as LASIK has been performed on people above 90 as well. There are some considerations however, such as the health of the person and the condition of the eyes. If there are no medical objections, then LASIK can be performed regardless of the age of the person. Doctors also tend to wait till young adulthood (around 18-20 years of age) before performing LASIK. However, LASIK procedures have been performed on young children with severe vision problems as well.

Myth # 2 – The technology behind LASIK is too new and thus not yet perfected
This is yet another commonly propagated myth about LASIK. The technology for this procedure has been around for quite some time and has ben performed with increasing regularity since the 1980s. There have been multiple long term studies done on people who underwent LASIK surgery and almost all of them have had favorable results both in the short term as well as the long term. It is a properly established field and means of treatment within ophthalmology and is subject to the same stringent standards testing as other treatments within the field of medicine.

Myth # 3 – LASIK can cause many complications such as dry eyes and night glares
Any surgical procedure has a certain chance of complications occurring. However, LASIK tends to have very low occurrences of complications. What many people tend to confuse complications with is the normal healing procedure. Dry eyes and night glares usually occur after the first few weeks of the procedure and is part of the healing process of the body. It usually tends to go way with the first few months itself.

Myth # 4 – Contact lenses are better than LASIK
While contact lenses do serve a purpose in correcting vision, they can often contribute to eye infections as well as irritations and headaches. Also contact lenses need to be changed every few weeks or so. LASIK surgery eliminates all of these hassles and you can have perfectly clear vision without having to worry about all the problems that contact lenses bring with them.

Myth # 5 – The LASIK procedure is painful
No other myth is farther from the truth. In this procedure, the surgeon creates a thin flap like structure out of the tissue within the cornea with the help of a laser. This layer is then used to reshape the cornea and thus correct vision problems. Antiseptic and numbing eye drops are used when performing this surgery which results in minimal discomfort that only stays during the initial stages. If you wish to discuss about any specific problem, you can consult an ophthalmologist and ask a free question.

4283 people found this helpful

Latest Trend in Eye Surgery

Senior Consultant Surgeon, Specialist In Refractive Lasik Surgery, MS Ophthalmology, Phacoemulsification & Multifocal Implantation, Occuloplasty Surgeon
Ophthalmologist, Delhi
Latest Trend in Eye Surgery

Eye surgeries have evolved a long way. Starting from the most basic of eye surgeries, technological advancement has evolved a number of modern eye surgery techniques. LASIK is the latest trend in eye surgery and is the most common type of eye surgery in the modern day.

LASIK or Lasik (laser assisted situ keratomileusis), is a laser eye surgery or laser vision revision. It is a kind of refractive surgery for the rectification of nearsightedness, hyperopia, and astigmatism. The LASIK surgery is performed by an ophthalmologist who utilizes a laser or microkeratome to reshape the eye's cornea with a specific end goal to enhance visual acuity. For most patients, LASIK gives a lasting contrasting option to eyeglasses or contact lenses.

Carrying out a LASIK surgery:

  1. To begin with, your eye specialist utilizes either a mechanical surgical apparatus called a microkeratome or a femtosecond laser to make a slender, round "fold" in the cornea.
  2. The specialist then creases back the pivoted fold to get to the fundamental cornea (called the stroma) and expels some corneal tissue utilizing an excimer laser.
  3. For partially blind individuals, the objective is to smooth the cornea; with farsighted individuals, a more extreme cornea is fancied.
  4. Excimer lasers additionally can redress astigmatism by smoothing an unpredictable cornea into a more typical shape. It is a misguided judgment that LASIK can't treat astigmatism.
  5. Laser eye surgery requires just topical soporific drops, and no wraps or fastens are required.
  6. After your LASIK surgery is completed, you will be given some rest. You may feel a makeshift smoldering or tingling sensation promptly after the surgery is completed. After some post-surgical examinations, you are ready to go home. Abstain from driving by yourself.
  7. Immediately after the surgery, you may experience blurred vision or hazy vision. It will subside with a little time.
  8. You must keep away from any kind of activity that causes strain to the eyes after the surgery. Avoid watching television or reading.

Results of LASIK surgery:

  1. Laser eye surgery offers various advantages and can significantly enhance your personal satisfaction. A great many people accomplish 20/20 vision or better after the surgery. However, LASIK results do fluctuate from people to people.
  2. You will have to continue wearing your contact lenses or spectacles. The power will be much less after the surgery.

Side-effects: While this surgery strategy provides effective results, LASIK complications can happen and may incorporate diseases such as night glare, and you may experience starbursts or radiances, especially while driving. 

LASIK surgery is one of the most carried eye surgeries nowadays and gives satisfactory results. If you wish to discuss about any specific problem, you can consult a ophthalmologist and ask a free question.

2580 people found this helpful

Popular Questions & Answers

Can I use itone eyedrop? Its been 6 months since my laser surgery. And sometimes there is irritation in my eyes so all I have is itone.

MS - Ophthalmology, MBBS Bachelor of Medicine and Bachelor of Surgery
Ophthalmologist, Gurgaon
Itone should not be used. Please consult the doctor who did your laser- they will prescribe you suitable eye drops to comfort the irritation.
5 people found this helpful

I read one of the article from wavikar eye institute which says Lasik surgery at 45000. Is that the only charge or it can be more than that?

Fellowship In Comprehensive Ophthalmology, DOMS
Ophthalmologist, Sangrur
Hello Charges of lasik usually depends on type of lasik Usually it's package So. This may or may not include test charges which may be around 2000 and no extra charges.

Hi My age is 33. I have most of my work on laptop and gadgets. My number is L4/-3.75. My number increase by 0.25 every 3-4 years. Just now an optician told me that I have a cylindrical number also of 0.25 in each eye. Is it normal that number increase at this age? Can I pursue lasik to normalise my number? Thanks.

MBBS, MS - Ophthalmology
Ophthalmologist, Mumbai
My dear friend lybrate-user, At the age of 33 with computer profession with mild increase in power af 0.25. But this is happening every 3-4 years. That means over a period of last 10 years your power had changed in the range of approximately -1. Increase in power of -1 over period of last 10 yes is something significant and defiantly requires investigation. As the power keeps on increasing till the age of 33 ;are we dealing with some ting called as pathological myopia or do you have other body illness which is disturbing and having effect on your eye. Which is secondarily leading to increase in power. This is something which requires through investigation; detail eye check up including your peripheral retinal examination and if required some blood tests .but the most important thing is your detail history. Which might point towards some illness at present or in past or it could be some indication of future disease which is not yet menifested. So my dear friend possibilities are endless and can be confirmed by examination in person. As far as lasik is concerned. 2 readings should be stable done at an interval of 6 months .that will tell us that probably your power is stabilised and after doing certain pre lasik investigations if you pass that test. That means you become a good candidate for lasik surgery. But in your case if recently you have developed cylindrical power also. Which was done by optician. It is advisable to confirm your power from anow eye doctor and really if you have this and also your power has changed grossly over period ;this warrents detail check up. Lasik is an cosmetic surgery but doing lasik will not answer the cause of your problem. Detail discussion on the points which I have mentioned with your eye doctor will show some light possible cause of your problem. Hope this answers. All the best.

Sir I done my lasik operation before 4 day I recover 80% vision but 20% vision is not clear How many time taken to recover all vision can I use again chasma .5 num.

Fellowship In Comprehensive Ophthalmology, DOMS
Ophthalmologist, Sangrur
Hello You can still waiting for Atleast a week Use lubricating eyedrop frequently If vision is becoming clear with glasses then you may use glasses
3 people found this helpful

Table of Content

What is the treatment?
How is the treatment done?
Who is eligible for the treatment? (When is the treatment done?)
Who is not eligible for the treatment?
Are there any side effects?
What are the post-treatment guidelines?
How long does it take to recover?
What is the price of the treatment in India?
Are the results of the treatment permanent?
What are the alternatives to the treatment?
Play video
Lasik Surgery
I am Dr Sunita Lulla Gur, senior consultant eye specialist in Sarita Vihar. Today, I will speak about the topic LASIK.

What do you mean by LASIK?

Lasik is a surgery which stands for Laser-Assisted in Situ Keratomileusis.

Why this surgery is done?

This surgery is done basically to correct the vision and eye power like- near sightedness, far sightedness, astigmatism. LOt many times we do get questions from many people like "I am eligible for LASIK or not?". So just for the short brief I will take you to the journey of LASIK.

As it is one of a cosmetic surgery, I would say but there are other advantages that why one can go for LASIK is;

It corrects the power
It gives good vision
It improves the contarst
These are the advantages which is why one can go ahead with the LASIK surgery.

Sometimes people think that at what age a person can have LASIK surgery?

So the criteria for the LASIK surgery is that;

The age should be more than 18 years.
Your power should be stablized for atleast 1 year
Your cornea should be fit to under take the LASIK surgery.
Another criteria is that the females who are pregnant should not undeergo LASIK at that time.
These are the main 4 selections for the LASIK. Again depending on the number, LASIK can be done from 0.5 to -10 also. Nowadays there are many technologies coming and lot of advances have been done . We are now doing in high powers also. Again we have to select the candidate properly for successfull outcome of LASIK.

The success rate of LASIK is usually 93-95%. Initially the success rate was less and the reasons for improving its success rate is that the selection criteria has improved. Our protocols have improved over the period of time.

There are different types of LASIK which are been done, those are,

C-LASIK - We make a superficially thin flap and the reshaping of the cornea is done as per the number and a person can see a good image after that. When the re shaping is done then the rays which comes focus properly on the retina. So it does the work how we do in practical correction. Here the microkeratome blade where the flap is removed and after that the reshaping of the cornea is done by the laser.
I-LASIK - It is bladeless LASIK surgery where the flap which is being removed is done by the laser itself and no blade is used. The advantage of this is that it can be done in thin cornea also. So, if the person is having thin cornea as per the criteria which we set, then I-LASIK can be done in these type of cases.
Contoura vision LASIK - This is an advanced surgery which has come in which the computerized topography is done and which is attached to LASIK which can pick up the minor abrasion which are present in the cornea so that it can correct the vision to its fullest. So sometimes we do have patients who are completely satisfied with the change in their vision. It also reduces the chances of dryness which is there after LASIK surgery.
So, when we plan for LASIK, there are certain criteria for the selection as I have explained. But for the successfull result,

You have to follow the advices that are been given by the doctor.
You should not put any water in the eyes after LASIK surgery.
You should not rub your eyes.
You should use the eye drops as suggested by the doctor.
Follow the protocol atleast for one month.

The precautions are;

Water should not go inside the eyes.
Avoid swimming atleast for 3 months.
Avoid going to gym atleast for 1-3 months.
Otherwise, you can go to the office next day. Initially you may feel discomfort but you can see the improvement in the vision the very next day. Every season is suitable for LASIK sugery and rest it depends on the fitness of a person for the surgery.

If you want to contact for any LASIK appointment, you can do it through Lybrate.

Thank you

Play video
Types and Benefits of Lasik Surgery
Lasik Surgery, All You Need to Know About It
Having issues? Consult a doctor for medical advice