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Lasik Surgery: Symptoms, Causes, and Treatment

Last Updated: Sep 23, 2022

What is Lasik Surgery?

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During Lasik eye surgery, lasers are used to specifically address refractive flaws that cause vision problems. Your vision is distorted by a refractive error, which occurs when your eye cannot bend light properly. For instance, hazy vision, nearsightedness, or farsightedness could ensue.

The acronym "Lasik" stands for "laser-assisted in situ keratomileusis. When referring to the reshaping of the cornea in your eye, the terms "in situ" and "keratomileusis" are translated as "in position" and "in place," respectively.

Lasik Surgery Causes

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One of these eyesight issues may be corrected by Lasik surgery:

  • Nearsightedness (myopia): Light rays focus in front of the retina and distort distant vision when the cornea curves too sharply or when your eyeball is slightly longer than typical. Nearby objects can be seen, but far distant objects cannot be seen.
  • Farsightedness (hyperopia): When the cornea is excessively flat or the eyeball is abnormally short, light concentrates behind the retina rather than on it. This results in blurry nearsightedness and, on occasion, farsightedness.
  • Astigmatism: When the cornea flattens or bends irregularly, astigmatism results, blurring both near and far vision.

Most individuals considering Lasik surgery now wear glasses or contact lenses. If Lasik surgery or another similar refractive technique is an option for you, your eye doctor will discuss it with you.

How can you prevent Lasik Surgery?

No, it is not possible to prevent Lasik Surgery once prescribed. But here is a list of things you can do to protect your eyes:

  • Make that the prescription for your glasses or contacts is current and suitable for using a computer.
  • Consult your doctor about computer glasses if your eye irritation persists.
  • By adjusting the top, make certain that your eyes are parallel to the monitor. You may now look down at the screen thanks to this.
  • Try to lessen the glare from the windows and the lights. Use an anti-glare screen if necessary.
  • Select a chair that is both sturdy and cosy. As you stand there, place your feet flat on the ground.
  • Blink more frequently or consider using artificial tears if your eyes are dry.
  • Take a 20-minute rest every so often. Take a 20-foot look for 20 seconds. At the very least, a 15-minute break should be taken every two hours.


  • Use the eye drops as directed on a regular basis.
  • After receiving eye drops, remain with your eyes shut for at least four to five minutes.
  • Make sure your eyelid's edges are clean by using sterile tissues.
  • Wash your eyes twice a day at the very least.
  • Blink your eyes often.
  • Avoid touching your eyes when washing and cleaning your face.
  • Put on sunglasses when you're outside to shield your eyes from the sun's rays and pollution.
  • From the very next day after your Lasik process, you are allowed to read books or watch tv.
  • You may carry on following a regular diet.
  • Always wash your hands thoroughly before wiping your eyes.
  • Eye drops must be administered first, then the eye ointment.
  • For about a week following surgery, make sure to use the eye protection the doctor gives you while you sleep.
  • Get enough sleep, ideally in a dark room, as soon as you are released from the hospital after your surgery.


  • Avoid exposing your eyes to dirt and pollutants.
  • After surgery, wait a few days before washing your hair.
  • Do not take off the eye patch protection on the day of surgery.
  • Do not rub your eyes or touch them with dirty hands.
  • For at minimum two weeks following surgery, refrain from sprinkling water in the eyes.
  • Do not clean your eyes with tap water.
  • Avoid utilising a hot tub or swimming for roughly a month after surgery.
  • After surgery, refrain from putting eye makeup for at minimum one month.
  • Exercise shouldn't be done for at least a week following surgery.
  • Till at least the third day following the procedure, avoid straining your eyes in front of a computer screen.
  • For at least one week following surgery, refrain from operating any kind of vehicle on your own.
  • Avoid exposing your eyes to smoky environments.

Lasik Surgery - Diagnosis and Tests

The patient is subjected to a comprehensive series of tests by the eye doctor before having Lasik surgery. These tests are carried out to check the patient's vision and eye health to determine whether he is a good candidate for Lasik eye surgery.

Among the tests that are carried out are those that look at the cornea's makeup, shape, and thickness as well as its optics, tear production, intraocular pressure, pupil size, lubrication of the eyes, and refraction. If a patient is a suitable candidate for Lasik, all of these elements are taken into account.

The eye expert uses eye drops to dilate the patient's pupil as he does the tests, enabling him to more thoroughly inspect the eyes. Vision blurring results from the eye drops and lasts for 4-6 hours. It is advised that patients refrain from wearing their contact lenses in the weeks leading up to the Lasik exam in order to ensure that the eye doctor receives accurate examination findings before undergoing Lasik.

  • Composition, Form, and Thickness of the Cornea: To precisely assess the patient's pre-existing eye issues prior to Lasik surgery, a corneal examination is done. The cornea, a dome-shaped surface covering the front of the eye, is the clear, topmost layer of the eye. The cornea's outside and interior surfaces will be examined by the ophthalmologist. Before having Lasik, the corneal topographer is utilised to map the eye and ascertain its curvature.
  • This aids the eye specialist in establishing the surgery's requirements. For Lasik preparation, he will measure the overall thickness of the corneal walls and check for any diseases or anomalies of the cornea. A patient may experience issues from having a thin cornea, disqualifying them from having Lasik. For such people, the doctor here suggests alternative vision correction techniques. It is they- internal eye pressure In order to rule out any possibilities of glaucoma in the patient's eyes, another eye test involves measuring intraocular pressure. Increased eye pressure leads to glaucoma, a disorder that may harm the optic nerve and vision.

    Glaucoma typically develops as a result of poor drainage of the fluid in the eyes, which places pressure on the optic nerve. Therefore, before having Lasik, eye doctors would check the patient for glaucoma.

  • Lubricating the eyes: The number and quality of tears are measured by eye doctors to determine whether Lasik patients are more likely to experience dry eyes. The doctor looks at tear production in the eyes as a pre-Lasik test. Tears are necessary for the cornea because they keep the eyes moist, fight infection, and speed up wound healing.
  • Pupil Measurement: One of the most important pre-operative Lasik tests performed by doctors is measuring the pupil size. Some individuals who have larger pupils may occasionally be more susceptible to glare or halos after Lasik surgery.
  • Refraction: The doctor evaluates the astigmatism, short-sight, and long-sight as a pre-operative Lasik test. The patient's eyeglass prescription will be precisely measured by this test. The patient's refractive error must have remained steady for more than a year in order for them to be candidates for Lasik eye surgery. Change for a minimum of 6 months. Throughout the testing and the entire Lasik procedure, the doctor will check the prescriptions for the eyeglasses and confirm this several times.
  • Review of Medical Background and Lifestyle: This phase is not a test, but rather a discussion between the patient and the doctor during which the patient must disclose any pre-existing medical conditions that might pose a risk to his vision following Lasik surgery. The doctor also talks about the patient's routines and way of life while learning about his medical background, current prescriptions, and past medical history. All of information aids the physician in identifying potential hazards the patient might experience following Lasik surgery. The candidate must satisfactorily complete these eye exams in order to be approved for Lasik eye surgery.

What risks could there be with laser eye surgery?

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Remember that selecting a trustworthy, skilled eye surgeon can lower your chance of Lasik issues.

The following are some issues connected to Lasik flap complications:

  • Unusual astigmatism: The corneal surface's unevenly curving is to blame for this. A laser correction that is not adequately centred on the eye or an irregular healing process can both result in irregular astigmatism. The resulting symptoms may include "ghost pictures" or double vision (diplopia). In some situations, the eye can require additional treatment or cosmetic surgery.
  • Epithelial Expansion: After Lasik surgery, this occurs when epithelial cells from the cornea's outer layer grow under the flap. Epithelial ingrowth often self-limits and presents no issues. However, a tiny percentage of patients (between 1 and 2 percent of Lasik treatments) may experience discomfort and/or blurred vision, necessitating further surgery to lift the flap and remove the epithelial cells.
  • Diffused Lamellar keratitis (DLK): This irritation under the Lasik flap, often known as "Sands of the Sahara," may have various reasons. Following Lasik surgery, some corneal irritation is typical. However, if it is left unchecked, as it was in DLK, it can hinder healing and cause blindness. When DLK occurs, it typically responds to treatments such topical steroids and antibiotics. In order to remove inflammatory cells and avoid causing tissue injury, the flap may also need to be removed and cleansed.
  • Keratoconus or keratectasia. This is a very unusual bulging of the surface of the eye that can happen if the cornea is overly thinned after Lasik or if the cornea was fragile before Lasik, as revealed by corneal topography mapping. After Lasik, keratoconus very rarely develops without any identified risk factors. As augmentation laser surgery is often not appropriate, other options include corneal crosslinking, corneal implants, gas permeable contacts, and corneal implants (Intacs) to keep the cornea in place and reinforce it.

Does Lasik Eye Surgery hurt?

Thankfully, Lasik eye surgery is painless. Your surgeon will apply numbing eye drops to both of your eyes just before the procedure. You may still feel some pressure while the process continues, but you shouldn't feel uncomfortable.

Home Remedies after Lasik Surgery

After Lasik, dry eyes can be treated using over-the-counter treatments and prescription drugs. Pay attention to your doctor's treatment recommendations.

OTC medications and natural cures

  • Rest. After the procedure, spend some time sleeping or relaxing in solitude to let your body to heal.
  • Keep your eyes safe. After your procedure, your doctor will give you an eye shield to wear for a few days.
  • Do not exercise. For the first few weeks after Lasik, refrain from physical activity and high-impact sports to give your body time to heal.
  • heated compress. If you have meibomian gland dysfunction and feel dry eyes, apply a warm compress to your eyes.
  • Avoid using screens. We blink considerably less when staring at computer, phone, or TV screens, which reduces the amount of tears (lubrication) and may hurt our eyes.

Medical Attention

  • Eye drops: Your eyes may stay moist if you use eye drops with various hyaluronic acid concentrations. There are additional eye drops designed to encourage moisture in your eyes.
  • Anti-inflammatories: If your eyes are swollen, you might need to use an eye drop. Cyclosporine eye drops are one type (Restasis).

If these remedies don't help, your doctor can suggest ointments to soothe dry eyes or punctal plugs, which dissolve in the body to temporarily keep more tears on the eye's surface.

What should I eat following LASIK surgery?

  1. Vitamins: Vitamins, in particular vitamin C, are well recognized for their benefits for ensuring the well-being of our eyes. Vitamin-rich foods aid in hastening your recovery. The risk of acquiring cataracts can also be decreased by vitamins. They also aid in slowing down eye ageing.

    Here are some foods high in vitamins that you could include in your diet:

    • Tangerine fruits
    • Peppers that are red
    • Leafy green vegetables
    • Milk
    • Carrots
    • Tomatoes
    • Berries
  2. Wholesome fats: Healthy fats help the body absorb nutrients more effectively. Despite their bad image, healthy fats are necessary for the body and can be found in many foods. They aid the body by allowing it to absorb all the vitamins and other nutrients that are included in our meals.

    Following are some foods high in beneficial fats:

    • Seeds
    • Nuts
    • whole eggs
    • Avocado
    • The sweet potato
  3. Foods high in protein are regarded for being good for the body and the eyes. A diet high in protein helps your cells stay healthier, which speeds up recovery. Protein is necessary for the veins, arteries, and other parts of the eye to work and recover.

    Following eye surgery, these are the best foods high in protein to add in your diet:

    • dairy goods
    • Seeds
    • Chicken (organic)
    • Eggs
    • Salmon
    • Nuts
  4. Carbohydrates: This might surprise a lot of you. Additionally, people frequently dislike carbohydrates. But carbohydrates not only give our bodies the energy they need, but they also help the body mend itself.However, be cautious of foods that are heavy in carbs.

    After Lasik surgery, try these nutritious carbs:

    • Quinoa
    • Whole grain
    • Bananas
    • Oats
    • Buckwheat

What not to eat after Lasik Surgery?

  1. Foods high in sugar: We suggest reducing your sugar intake if you've just had eye surgery or are considering it. Your blood pressure may increase if you consume sugary meals.

    The following common sugary foods should be avoided:

    • Bottled juices
    • Honey
    • Healthier substitutes for sugar
    • Fruit that is heavy in sugar
    • Pastries, sweets, cakes, etc.
  2. High-sodium foods: The same way that sugary foods have an adverse effect on blood pressure, meals high in sodium, like salt, can also. Among other health problems, salt can cause a spike in blood pressure. Your eyes' health eventually gets worse due to these irregularities.

    The following foods high in salt should be avoided after surgery:

    • Canned goods
    • Pickles
    • Packaged meals
    • Incredibly processed foods (chips, etc.)
  3. A fried dish: Fried foods contain a lot of fried oil, which is bad for your body overall. Additionally, even foods that aren't necessarily bad lose all of their nutrients when they are fried. Consequently, they are harmful to the body and essentially worthless.

    The following fried meals should be avoided:

    • Chips
    • Pakoras
    • Paranthas
    • Samosas, etc.
  4. Incredibly processed foods: Trans fat, saturated fats, sodium, sugar, and other toxic ingredients are prevalent in highly processed foods, which may affect your health. Preservatives are needed in enormous amounts in processed meals. These preservatives may also change blood pressure and other bodily processes, which may further deteriorate the condition of your eyes.

    You should stay away from the following ultra-processed foods:

    • Chips
    • A bag of popcorn
    • Quick meals (burgers, pizza, etc.)
    • Packaged cookies, biscuits, etc.

Which are the best medicines for Lasik Surgery?

Your doctor will administer numbing eye drops prior to doing Lasik. However, you might also be instructed to take some medications just before or right after the treatment, such as: 1,000 mg of the over-the-counter pain reliever acetaminophen (NSAID).

Lasik Surgical Treatment

The average time for Lasik procedure is 30 minutes or less. You spend the process lying on your back in a recliner. To make you more relaxed, you could be given drugs.

Your doctor uses a tool to keep your eyelids open after placing numbing drops in your eye.

Your eye will be covered with a suction ring before the corneal flap is sliced. This may create pressure and produce a slight blurring of vision.

Your eye surgeon removes a little hinged flap from the front your eye using a tiny blade or a cutting laser. Your doctor can reach the area of your cornea that has to be reshaped by folding back the flap.

Your eye doctor reshapes a portion of your cornea using a laser that has been programmed. Every laser pulse removes a very little amount of corneal tissue. The surgeon repositions the flap after shaping the cornea. The flap typically heals without the need for sutures.

During the procedure, you'll be told to focus on a spot of light. By concentrating on this light, you can maintain eye fixation while the laser reshapes your cornea. As your corneal tissue is being removed by the laser, you can notice an unique odour. Some people claim to have smelled something that smells like burnt hair.

Doctors will typically do Lasik surgery on both of your eyes on the same day if you require it.

Is Lasik Surgery safe?

Lasik is typically regarded as a safe surgery with a low complication rate, despite the fact that all surgeries include some risk of problems and adverse effects.With a rate of complications of fewer than 1%, Lasik is actually one of the least risky elective surgical treatments now accessible.

If you wish to access the most experienced and skilled lasik surgery experts, you can simply log on to Pristyn Care and they will take care of the rest.

How long does it take to recover from Lasik Surgery?

Your eyesight may not stabilise for up to six months after undergoing Lasik surgery. These adverse effects are often transient, although they occasionally become permanent. Additionally, there is a chance of more uncommon side effects including eye infection and eyesight that is worse than it was prior to Lasik.

What is the price of Lasik Surgery in India?

20,000 to 1.5 lakh rupees, depending on a number of variables. For both eyes, Lasik eye surgery typically costs roughly Rs. 60,000.

Are the results of the Lasik Surgery permanent?

During the Lasik procedure, the cornea is reshaped using a laser. Lowering ocular power is facilitated by the changing curvature of the cornea. The majority of persons who have Lasik experience lasting results. However, a tiny percentage of individuals may eventually develop hazy vision as a result of some different eye power.

Who is eligible for Lasik Surgery?

You must fulfill a number of prerequisites in order to have Lasik surgery. Here are a few examples:

  • It is necessary to be at least 18 years old
  • Your eye prescription shouldn't have altered much over the past 12 months.
  • You must have a refractive defect that can be corrected with Lasik.
  • Your corneas must be strong and thick enough, and your eyes must generally be in good health.
  • It's critical to set reasonable goals for what Lasik might and cannot do for you.

Who is not eligible for Lasik Surgery?

There are some people who cannot get Lasik. They include those with:

  • Severe cases of myopia, hyperopia, or astigmatism, as well as those with an unstable (changing) refractive defect.
  • Terribly dry eyes
  • Excessively thin corneas
  • Corneal illness or abrasions
  • Keratoconus (cone-shaped cornea)
  • Chronic glaucoma
  • Cataract that impairs vision
  • A background of some eye illnesses
  • Diabetes that is not effectively managed
  • Expecting or nursing mothers

What are the Lasik Surgery post-treatment guidelines?

The general guidelines that you should adhere to following your Lasik procedure are as follows:

  • Take a snooze for a few hours right after the procedure.

    After your Lasik treatment, your doctor advises you to rest for a few hours. Getting some shut-eye rest or sleeping helps ease the discomfort and hasten your recuperation.

  • Take the medication as prescribed.

    Following the procedure, you must use the eye drops as instructed. Your doctor may advise using lubricating eye drops or artificial tears to soothe discomfort as well as antibiotic and steroid eye drops to treat infection and inflammation. Even though your eyes are not dry, you still need to use lubricating eye drops. Use the eye drops as instructed to prevent complications including infection and flap dislodging. Two drugs should be taken five minutes apart.

  • Do not rub your eyes.

    During the Lasik treatment, your hinged flap is folded back to allow access to the cornea, and it is then rapidly and painlessly reinstalled. The corneal flap may get dislodged if you rub or touch your eyes, which could lead to major issues. After the procedure, refrain from touching your eyes for at least two weeks.

  • Use shields for eye protection.

    For the initial three to four nights following surgery, put on protective glasses or a clear plastic shield before going to sleep. This is to prevent unintentional eye rubbing that could cause the corneal flap to tear.

  • Put on sunglasses or dark lenses.

    UV radiation exposure can cause eye deterioration and scarring. Therefore, for at least a week following surgery, you must wear black sunglasses during the day. This shields your eyes from harsh light and aids in the healing of your cornea.

  • Don't wear eye makeup.

    For at minimum a week following the procedure, you should refrain from applying eye makeup. Applying creams or lotions near the eyes is not advised. This lessens the possibility of your corneal flap being accidentally damaged, foreign objects getting into your eyes, or infection from tainted cosmetics.

  • Showers are not preferred over baths.

    You must wait at least two weeks after surgery to take a shower or go swimming. To prevent infection, avoid getting water, soap, or shampoo in your eyes. Use a face cloth to dry yourself and refrain from rubbing your eyes.

  • Don't drive

    After surgery, your doctor advises against driving for a minimum of two days. But occasionally, you can be told to refrain from driving for extended stretches of time.How well your eyes are recovering will determine this.

  • Stay away from contact sports and rigorous exercise.

    You shouldn't participate in any strenuous or contact sports for one month following your Lasik operation. You can carry on with non-contact activities like running or golf if you're at ease. Put on a headband, safety glasses, and anything to keep sweat out of your eyes.

What negative effects might Lasik surgery cause?

Like the negative effects of an appendectomy, Lasik side effects are a result of how the treatment is carried out. There are both sensory (things you'll feel) and visual (things you'll see) side effects.

You'll see a difference in your vision after the treatment, although it won't be evident straight away. Before you go home, one of our Lasik surgeons will make sure everything is in order by checking your eyes.

Sensitivity to Light

Most patients experience some light sensitivity immediately following the operation. We'll give you some extremely cool sunglasses to wear to your house following your Lasik procedure just in case that lasts for a few days!

Slight Discomfort

Your eyes will begin to feel uncomfortable for the first time in the first 30-45 minutes following the surgery. In terms of side effects, the early healing phase is the hardest part of the post-Lasik recovery process. It just lasts for a short while.

The best course of action is to go home and go to bed before the irritation sets in since sleep is the best cure for this. If you're having problems falling asleep, try to relax while closing your eyes. The first soreness is typically gone after a snooze. Most patients say that when they awaken, they feel somewhat at ease. (By the way, they typically have vision that is so good that they can kiss and embrace people since they can see across the room without glasses.)

Scratchy, Itchy Eyes

Patients frequently experience scratchy, itchy, or foreign body sensations in their eyes for a few days following Lasik.

Every day, these symptoms typically get better. When similar feelings occur, artificial tears without preservatives make the eyes more pleasant. The chilled artificial tears are especially comforting during the first few days, so it's a good idea to store some in the fridge.

Dry Eye Following Lasik

Any Lasik patient should anticipate experiencing dry eyes as a side effect. The technique interferes with the eye's normal system for producing tears. To replace the moisture lost, most patients utilise artificial tears. As they mend, they gradually use fewer tears.

At your follow-up consultations, our Lasik Specialist doctors will check on this aspect of the healing process.

Halos and Variations in Vision

For the majority of Lasik patients, visual recovery happens overnight. Most patients can read the 20/20 line or better on an eye chart without glasses at their first appointment the day after their Lasik surgery!

However, it's crucial to understand that your vision probably won't be "perfect" by the following day. Following any surgery, the body has a natural reaction (inflammatory response), and Lasik is no exception. There will also be some dryness, as we've already mentioned.

It is due to both of these side effects that eyesight following Lasik rarely becomes "perfect" straight away. They are the causes of why patients frequently experience haloes at night and small visual changes as their condition heals.

The nighttime halos are evident but often unproblematic for patients. Fewer patients report any major issues with nighttime driving. Patients frequently fail to notice the halos decreasing since it usually happens gradually.

Can I cook after Lasik Surgery?

After a Femto-Lasik operation, cooking is relatively safe as long as you follow the standard safety procedures for those who have just had surgery.

Lasik Surgery - Outlook/Prognosis

Lasik frequently provides better eyesight without the bother of contacts or glasses. Generally speaking, you have a very excellent chance of regaining 20/25 vision or better following refractive surgery.

More than 80% of people who have Lasik refractive surgery discover that they no longer need glasses or contact lenses for the majority of their everyday activities.

Your unique refractive error will affect your findings, along with other variables. Patients who have undergone successful refractive surgery typically exhibit mild to moderate nearsightedness. Results are less predictable for those who have considerable near- or farsightedness along with astigmatism.

Surgery may occasionally undercorrect a problem. If this occurs, you might require additional surgery to make the necessary repair.

Rarely, some people's eyes progressively restore the level of vision they had prior to surgery. Conditions including aberrant wound healing, hormonal abnormalities, or pregnancy may cause this. Sometimes, another eye condition, like a cataract, is the cause of this shift in vision. You should inform your doctor of any alterations in your vision.

Frequently Asked Questions (FAQs)

Does Lasik Eye Surgery work for everyone?

Not everyone qualifies for Lasik surgery. There are a number of factors that ophthalmologists consider when determining if Lasik surgery is appropriate for a patient and whether it will improve vision with no or few problems.

When can I drive after Lasik Surgery?

As soon as your vision is clear enough, usually 2 to 3 days following the treatment, you can begin driving. For two to three weeks, avoid driving at night since you can encounter glare.

After having Lasik surgery, can I go back to work?

You should take two days off work as part of the typical aftercare regimen. Additionally, as it would strain your eyes, you should avoid reading a book. Your healing will proceed more quickly and smoothly the more time you spend away from digital devices.


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Written ByDr. Ruchi MBBS Bachelor of Medicine and Bachelor of Surgery,DOMS,MBBSOphthalmology
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