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What is LASIK Eye Surgery?

LASIK stands for laser in-situ keratomileusis which is a common procedure used for the treatment of refractive errors, i.e., myopia, hyperopia, and astigmatism. It is a type of refractive surgery that works by reshaping the cornea with the help of a laser beam. As the refractive ability of the cornea is restored, the patient becomes able to see clearly without the help of visual aid. 

The most common reason for irreversible blindness in India is undercorrected refractive errors. Not only this, but vision problems can also make regular life difficult. For instance, you won’t be able to swim properly or watch 3D movies without comfort. Even on an everyday basis, you will have issues while driving, watching TV, or reading books. Besides this, wearing eyeglasses and contact lenses also has numerous problems. You will have to be careful not to break them and also need to replace them as your eye power will continue increasing with age due to the corneal or eyeball defect. 

Due to all these reasons, most people are eager to undergo minimally invasive LASIK eye surgery and correct the refractive errors in their eyes.

LASIK Eye Surgery

Why is LASIK done?

Refractive error is a problem in which the eyes lose their ability to focus the light on the retina with precision due to irregularities in the shape of the eye or cornea. Each type of refractive error forms due to any of the following reasons:

  • The eyeball length either grows too long or too short 
  • The shape of the cornea becomes irregular
  • The eye lens start to age and loses its ability to focus light 

Due to any of the above reasons, people of all age-groups experience vision loss. With age, refractive errors only progress and become more problematic. LASIK surgery is performed for the correction of these refractive errors:

  • Myopia, also known as nearsightedness, is a condition in which the eyeball becomes long or the cornea becomes curved. Due to this, the image is formed in front of the retina, making it difficult for the person to see faraway objects. 
  • Hyperopia, also known as farsightedness, is a condition in which the eyeball becomes short or the cornea becomes too flat. In hyperopia, the image is formed behind the retina making it difficult to see nearby objects. 
  • Astigmatism is a condition in which the cornea curves and flattens unevenly. Due to this, both distant and nearby vision is affected. 

With the help of laser technology, all these refractive errors can be corrected with precision. 

Types of Refractive Errors








  • Short or long eyeball
  • Curved or flattened cornea
  • Aging of the eye lens
  • Corneal inflammation
  • Eye injury


  • Blurry vision
  • Double vision
  • Headaches
  • Seeing a glare or halos around lights
  • Squinting and strain in the eyes
  • Inability to see closer or farby objects or both


  • Comprehensive Eye Examination

Both visual acuity tests and refraction tests are done as a part of a comprehensive eye exam that is done once a year. It also involves other tests like a corneal exam, pupil exam, extraocular muscles exam, etc. 

  • Refraction Test

A refraction test is also called a vision test which helps the eye doctor to determine the prescription of the eyeglasses or contact lenses you will need. The doctor will assess how the light bends as it travels through the cornea and lens of the eye. 

Once it is confirmed that you need corrective lenses, the doctor will either use a computerized refractor or shine a light into your eyes to find what type of prescription you’ll need. The amount of light that bounces back off your retina will tell the refractive score A phoropter will be placed in front of your eyes and the doctor will use different lenses to accurately identify your refractive power. 

  • Visual Acuity Test

A visual acuity test is done to see your ability to see the details of a letter or symbol at a specific distance. This test is meant to evaluate the eye’s ability to identify the shapes and details of the objects. Visual acuity tests can be done for color vision, peripheral vision, and depth perception. 

There are two tests done for visual acuity, Snellen and random E test. 

  • In Snellen, the doctor uses a chart of letters or symbols in which letters are arranged in different sizes in rows and columns. 
  • In the random E test, the doctor asks the patient to identify the direction of the letter. 

The results of both these tests combined help the doctor to calculate the refractive error which will be used during the surgery. 

  • Pachymetry Test

The test is done to determine the thickness of the cornea. As the surgery involves the removal of corneal tissues, it is important to know how many tissues will remain after the correction. People who have a thin cornea are often not considered an ideal candidate for LASIK surgery. 

  • Corneal Topography

In this test, a 3-D map of the cornea is created with the help of a computer-assisted diagnostic tool. It produces a detailed visual description of the shape and power of the cornea. It will help the doctor to determine how much corneal tissue will be removed and the right ablation pattern. 

Test for LASIK


 Mild myopia has eye power up to -3.00 diopters. Moderate myopia has a power in the range of -3.00 to -6.00 diopters. High myopia has a power of more than -6.00 diopters. 

Severity of myopia

Risks & Complications

LASIK eye surgery is most commonly performed by experienced ophthalmologists who have successfully performed over 500 surgeries. Moreover, the laser is rarely manually operating. A computerized machine is used to control and operate the laser machine that removes the corneal tissues. The laser has an automatic detection system that will identify the movements of the eyes and stop functioning to ensure that other eye components are not harmed under any circumstances. Therefore, there are negligible chances of complications during the surgery itself. 

  • Prevention of Vision Problems


    Prevention of Vision Problems

    The eyes are a very important part of our body and their health matters a lot to see the world around us. What most people don’t realize is that vision problems can be avoided and eyes can be kept healthy if they follow the steps below:

    • Focus on maintaining your blood sugar levels. Higher sugar levels can increase the blood pressure significantly and may affect the optic nerve that can impair your vision. 
    • Know your family’s eye health and history to know if you are potentially at risk of developing certain eye diseases. Refractive errors can be hereditary, i.e., if your parents had some kind of refractive error, you are more likely to get it at a young age. 
    • Eat healthy food to protect your sight. You must have heard from many people that carrots, green leafy vegetables, fruits, etc. are good for your eyes. It is true as some food items are rich in omega-3 fatty acids that are good for eye health. 
    • Wear protective eyewear while playing sports or other activities in which there is a risk of eye injury. If your eyes get injured, the vision is the first thing that will be affected. 
    • Quit smoking as it is bad for your overall health as well as your eyes. It will damage the optic nerve which will ultimately impair your vision. 
    • Go for a regular eye checkup to ensure that the vision problems can be detected at an early stage. This will help to get proper treatment for the condition and prevent it from advancing. 
    • Give your eyes proper rest if you spend your entire day watching a computer screen. Take breaks throughout the day and use some eye exercises to keep the ciliary muscles strong. 
  • Who can undergo Lasik?

    Who can undergo Lasik?

    Who can undergo Lasik?

    To find out whether a person with refractive error is eligible to undergo LASIK eye surgery or not, the doctors use well-defined criteria that involve the following points:

    • Your eyes must be healthy overall. 
    • Your cornea must have sufficient thickness so that the surgeon can safely remove the tissues to correct the refractive error. 
    • Your pupils must not be too large as it will increase the risk of side effects, such as halos, glares, or starbursts. 
    • Your eye power should be stable and not changed in one or two years. 
    • Your prescription must be within the specified limits as other surgical techniques will be more appropriate to correct severe refractive errors. 
    • You must be old enough, i.e., more than 18 years old. 
    • You should not be pregnant. 
    • You must be in good health, i.e., do not have any medical condition that can impair your body’s healing abilities. 

    The only way to confirm that you are a good candidate for LASIK treatment is to see an eye specialist and get evaluated. 

  • Myths & Facts About Lasik

    Myths & Facts About Lasik

    Myths & Facts About Lasik

    Myth 1: Anyone can undergo LASIK surgery.

    Facts- Not everyone can undergo LASIK. There are specific guidelines and criteria to find out if a person is eligible for LASIK or not. 


    Myth 2: LASIK is painful and the laser can burn your eyes.

    Facts-LASIK is not a painful procedure but it may cause a little bit of discomfort. And the laser beam is controlled by a computerized machine that shuts down after sensing eye movements to avoid damage to any of the eye components. 


    Myth 3: After having LASIK surgery, you won’t have to wear glasses or contact lenses for the rest of your life.

    Facts-LASIK can fix refractive errors in your eyes and have long-lasting effects. However, it can’t protect your eyes from age-related problems that will require you to wear glasses or contact lenses again. 


    Myth 4: LASIK can only treat one eye condition at once.

    Facts-LASIK can treat all kinds of refractive errors at once, including myopia, hyperopia, and astigmatism. 


    Myth 5: The effects of LASIK only last for a few years.

    Facts-The effects of LASIK eye surgery are long-lasting for most individuals. However, the results may vary depending on how much the patient cares for his/her eyes after having the surgery. 


    Myth 6: LASIK is a very expensive procedure.

    Facts-LASIK may seem like an expensive procedure but it is a one-time investment that will save you from spending money every year on spectacles, prescriptions, contact lenses, lens solutions, etc. 

When to consult an eye doctor?

You should see an eye doctor at least once or twice a year at a younger age. After you reach the age of 40, it will be better if you go and visit an eye specialist every year as eye health declines considerably with age. 

Besides this, if you experience the following things, you should immediately see an eye doctor:

  • If you have problems with near or distant vision. 
  • If you get frequent headaches. 
  • If a foreign object enters your eye, such as grit, dirt, chemicals, or debris. 
  • If you experience eye pain that is intense and consistent. 
  • If your eyes always feel tired or you have eye fatigue. 
  • If you can’t focus with one or both eyes. 
  • If your eyes are becoming sensitive to light. 
  • If your eyes become dry or itchy. 
  • If you see flashes, floaters, or spots in your field of vision. 
  • If you have double vision in one or both eyes. 

Questions to Ask Your LASIK Surgeon

Am I an eligible candidate for LASIK eye surgery?
Will I be awake during the surgery?
What results should I expect from LASIK surgery?
How will my lifestyle be affected after the surgery?
Will my vision become stable after the procedure?
Can I achieve 20/20 vision with the help of LASIK treatment?
What are the things I need to take care of after having LASIK surgery?
Can I undergo LASIK surgery again if needed?
Will I need medicines to get the best results from LASIK?
How much LASIK eye surgery will cost?
Is the surgery painful?

Treatment Options & Cost

The non-surgical treatment options for refractive errors involve the following:

Spectacles or Eyeglasses 

Spectacles are the first line of treatment for refractive errors. There are three types of lenses used in eyeglasses:

  • Concave lens to correct myopia or nearsightedness
  • Convex lens to correct hyperopia or farsightedness 
  • Cylindrical lens to correct astigmatism

As your refractive error increases, the power of the glasses will also increase. In mild stages, the thickness of the lens is small which will increase over time when your eye power increases. 

Contact Lenses 

This method of refractive error treatment is more suitable for young adults. There are different materials and types of lenses available that are prescribed after proper diagnosis. 

  • Soft contact lenses are used to correct myopia and hyperopia with astigmatism which is less than 1.00 diopters. 
  • Rigid lenses are used to correct both regular and irregular astigmatism. 

You will have to follow certain guidelines to use contact lenses, which is why people often use either eyeglasses or consider undergoing LASIK eye surgery. 

Insurance coverage for LASIK eye surgery

Insurance coverage

LASIK eye surgery is usually not covered under the health insurance policy as it is not a critical illness. Refractive errors can be corrected easily through prescription glasses or contact lenses. The treatment is not medically necessary and it is done as an elective procedure. Thus, LASIK is generally not covered by insurance. 

However, there is one exception to this rule that is included in all medical policies. LASIK eye treatment will be covered under insurance if your eye power is more than 7.0 diopters. Then you can file a claim for the treatment and cover all expenses.

Insurance coverage for LASIK eye surgery
Recovery rate of LASIK eye surgery

Recovery rate

The eyes start recovering immediately after the LASIK eye surgery and the initial healing occurs rapidly. Your vision will stabilize within 24-48 hours. Thus, the recovery rate is quick. However, you will have to follow specific instructions for at least a month to ensure that no complications arise until the eyes heal completely. 

It is the flap that will take around a few weeks to heal. As soon as the flap heals, you will be able to resume daily activities without any problem. The doctor will advise you to come back for a follow-up after one week of having surgery to monitor your recovery. After that, you can get follow-ups after six months or longer to monitor your vision and eye health. 

Recovery rate of LASIK eye surgery

Lasik Eye Surgery Experience

Lasik Eye Surgery

Latest Research

  • Latest Research of LASIK eye surgery

    New ultrafast 3D clinical imaging system could improve LASIK surgery, diagnosis of eye diseases

  • Latest Research of LASIK eye surgery

    Corneal and lens-based refractive surgery advancements optimize vision

  • Latest Research of LASIK eye surgery

    LASIK Quality of Life Collaboration Project


What is wavefront LASIK?

It is a type of LASIK surgery in which the surgeon creates a 3-D map of the cornea with the help of topography and uses the map to perform the surgery with higher precision. 

Is LASIK a permanent way to correct vision problems?

Yes. LASIK is a permanent vision correction solution as it effectively and safely corrects the current refractive error with precision. The cornea is reshaped properly to ensure that no refractive error is left. So, you can rest assured knowing that LASIK surgery is indeed a permanent solution. 

Can LASIK results last for a lifetime?

Yes. LASIK can last for 10 years, 20 years, and even for a lifetime in some cases. The lasting effects depend on multiple factors, such as the age of the patient, medical conditions, and how much the patient pays attention to eye health. 

Is it a good idea to undergo LASIK surgery after 40?

Yes. No matter what your age is, LASIK is most certainly a good method to prevent further vision loss due to refractive errors. It is safe for patients over 40 and also has long-term value if the patient’s eye health is optimal. 

Who is not the right candidate for LASIK surgery?

A person is not considered an ideal candidate for LASIK eye surgery if the individual has:

  • Fairly good overall vision 
  • Severe nearsightedness 
  • Serious eye disease 
  • Large pupils or a thin cornea
  • Age-related eye problems 

In case of any of the above-mentioned points, you won’t be eligible to undergo LASIK surgery.

When can I watch TV after having LASIK eye surgery?

You can watch TV after taking a nap following the surgery. There are chances that small digital screens may irritate your eyes. Hence, it will be beneficial if you wait for a few days to watch TV and use other digital devices like phones, tabs, or computers. 

What if I cry after having LASIK surgery?

Normally, crying won’t affect your eyes or the results of LASIK surgery as long as you don’t rub them. The only risk with tears is that you would want to rub your eyes after crying which can displace the flap and disrupt the healing process. 

Facts and statistics around LASIK:


Vision problems are very common in India, especially in young children. Currently, myopia is the most common refractive error that affects 21.15% of children of the age group 5-15. And based on the statistics, it has been predicted that the number will rise up to 31.89% in 2030 and 48.14% in 2050. 

The prevalence of refractive error is found at 7.61% in urban India and 5.21% in rural India which is significant. 


Seek Advanced Treatment for Refractive Errors- Undergo LASIK Eye Surgery for a Safe & Effective Solution 

LASIK eye treatment has become very popular in recent years thanks to the advanced technology that has made surgical procedures safer and effective. If you are fed up with the hassles of wearing eyeglasses or contact lenses and want to get rid of them permanently, Pristyn Care is the right solution. We provide a seamless surgical experience to patients who wish to undergo vision correction surgery. Pristyn Care has its own clinics and also works in association with top hospitals to provide high-quality care to the patients. You can rely on us and undergo LASIK eye surgery in a hassle-free way. We will handle all treatment-related formalities on your behalf and help you get rid of vision problems once and for all. 


Schedule Your Appointment to Consult with Best Ophthalmologists in India at Pristyn Care 

To get optimal care, you need to consult with the best ophthalmologists. And Pristyn Care houses the best team of eye specialists across 30+ cities. You can schedule your consultation with the doctors at your convenience by giving them a call or filling the appointment form. Our representatives will coordinate with you throughout the treatment journey and arrange everything on your behalf to simplify your surgical experience. 

You can talk to the best eye doctors in India and discuss the LASIK eye treatment, its risks, benefits, and results in detail. 

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