Types of LASIK Comparison of Techniques and Benefits

Blogs Bangkok Eye Hospital

There are several popular types of LASIK, such as PRK, which removes the corneal surface to reshape the cornea; LASIK, which uses a microkeratome blade to create a corneal flap; Femto LASIK, which uses a laser instead of a blade; and ReLEx SMILE, which involves a smaller incision and faster recovery.
LASIK is suitable for people with nearsightedness, farsightedness, or astigmatism, who have a strong and sufficiently thick cornea, and no chronic or severe eye diseases. It is ideal for those who want to reduce their dependence on glasses or contact lenses in daily life.
Choosing the most appropriate LASIK technique depends on your vision condition, corneal structure, and lifestyle. It’s best to consult an experienced ophthalmologist for a personalized evaluation and treatment recommendation.

What Are the Different Types of LASIK?

Vision problems such as nearsightedness, farsightedness, or astigmatism can significantly affect one’s quality of life. LASIK has become a popular and effective solution for permanent vision correction.
Today, there are various LASIK technologies — each with its unique principles, advantages, limitations, and costs.
This article explores how many types of LASIK there are, comparing each method’s pros and cons and helping you choose the best technique for your eye condition, budget, and lifestyle.

Main Types of LASIK Surgery

LASIK technologies have evolved continuously to meet different vision correction needs. Each type works differently and has its own benefits and precautions:

1. PRK (Photorefractive Keratectomy)

The earliest LASIK method. The surgeon removes the outer corneal surface before reshaping the cornea with a laser. The surface gradually regenerates.
Pros: No risk of flap displacement; suitable for thin corneas or people with high-impact activities.
Cons: Longer recovery (3–5 days of discomfort or blurred vision).

2. TransPRK

An advanced form of PRK using Excimer laser to remove the epithelium and reshape the cornea in one step — without touching the eye directly.
Pros: No flap creation; ideal for thin corneas.
Cons: Similar recovery time to PRK; may cause temporary discomfort.

3. Standard LASIK

Traditional LASIK using a microkeratome blade to create a corneal flap, then reshaping with a laser.
Pros: Fast recovery, minimal pain.
Cons: Possible flap displacement if the eye is hit within 1–3 months.

4. FemtoLASIK (Femtosecond LASIK)

An upgraded version of standard LASIK using a Femtosecond laser instead of a blade to create the flap.
Pros: More precise, safer, smoother flap surface, faster healing.
Cons: Still carries minor flap displacement risk.

5. ReLEx SMILE

Uses a Femtosecond laser to create a small tissue lenticule, which is removed through a 2–4 mm incision — no flap creation.
Pros: Tiny incision, faster recovery, lower dry-eye risk, better corneal stability.
Cons: Suitable only for myopia and astigmatism (not presbyopia).

6. SMILE Pro®

The most advanced and comfortable LASIK technology today, using high-speed laser correction — only 8 seconds per eye.
Pros: Fast, accurate, less anxiety during the procedure.
Cons: Applicable for myopia and astigmatism only.

7. NanoLASIK

An enhanced all-laser LASIK using low-energy femtosecond laser and AI-assisted scanning for higher precision.
Pros: Painless, accurate, safe, effective for myopia, hyperopia, and astigmatism.

8. NanoReLEx®

Uses next-gen femtosecond laser with AI + real-time OCT scanning, creating and removing corneal tissue via a small incision (~2 mm).
Pros: Extremely precise, safest option, quick recovery.
Cons: Suitable for myopia and astigmatism only.

9. NV LASIK

Designed for presbyopia correction, using blended vision — one eye is corrected for distance, the other slightly nearsighted for near focus.
Pros: Reduces dependency on reading glasses.
Cons: Requires a short adaptation period.

10. Nano NV LASIK

An advanced form of FemtoLASIK using ultra-fast femtosecond laser (nanojoule energy) for smooth corneal separation and rapid recovery.
Pros: Enhances both near and distance vision for presbyopia; minimal discomfort.
Cons: May slightly reduce contrast sensitivity.

Comparison Table: Types of LASIK

Type	Principle	Advantages	Precautions
PRK	Removes surface layer before reshaping cornea	No flap, suitable for thin corneas	Slower recovery, discomfort
TransPRK	Laser removes surface and reshapes in one step	Touch-free, no flap	Slower recovery
Standard LASIK	Blade creates flap, laser reshapes	Fast recovery	Flap may shift with impact
FemtoLASIK	Laser creates flap, no blade	High precision, safer	Minor flap risks
ReLEx SMILE	Laser creates small lenticule, removed via tiny incision	Small incision, quick recovery	Limited to myopia/astigmatism
SMILE Pro®	Fast femtosecond laser (8 sec/eye)	Quick, comfortable	Myopia/astigmatism only
NanoLASIK	Low-energy laser, AI precision	Safe, accurate	Slight risk if impacted early
NanoReLEx®	AI-assisted femtosecond laser, OCT scan	Highly precise, safest	Myopia/astigmatism only
NV LASIK	Blended vision correction	See near & far	Needs short adjustment
Nano NV LASIK	Nano-energy laser for presbyopia	Fast recovery, smooth	May reduce image sharpness

Who Is a Good Candidate for LASIK?

LASIK is effective but not suitable for everyone. Ideal candidates should:

Be 18 years or older
Have stable vision for at least 1 year
Have sufficient corneal thickness
Have no severe eye diseases (e.g., glaucoma, cataracts)
Have no uncontrolled medical conditions (e.g., diabetes)

Pre-LASIK Preparation

Stop wearing contact lenses before surgery
Wash your face and hair thoroughly
Avoid makeup and wear front-button clothing
Do not use perfume or deodorant sprays
Avoid alcohol the day before
Inform your doctor of all medications
Do not drive on the day of surgery — have someone accompany you

Post-LASIK Care and Precautions

Do not rub your eyes
Avoid getting water in your eyes
Do not swim or dive until cleared by your doctor
Avoid eye makeup for at least 2 weeks
Use prescribed eye drops strictly
Wear protective eye shields while sleeping for 1 week
Rest your eyes regularly when using screens

How Much Does LASIK Cost?

Costs vary by technology. A comprehensive eye evaluation at Bangkok Eye Hospital can help determine the most suitable technique and estimate the total cost, including aftercare and insurance options.

Conclusion

How many types of LASIK are there?
There are several — such as PRK, LASIK, Femto LASIK, and ReLEx SMILE, each differing in technology, incision size, and recovery time.
Choosing the right LASIK method requires professional evaluation to ensure safety, accuracy, and long-term results.
Bangkok Eye Hospital offers modern technology and specialized eye care to help you achieve clearer vision confidently.

FAQs About LASIK Types

1. Can I undergo another LASIK procedure with a different technique?
Yes, but it depends on your corneal condition and previous method. For example, if you previously had LASIK with a flap, your surgeon may reopen it for enhancement. PRK retreatment is also possible for certain cases.

2. Does the LASIK type affect recovery time?
Yes. PRK typically takes several days to a week for recovery, while LASIK, Femto LASIK, and ReLEx SMILE allow clear vision within 1–3 days.

3. Which LASIK technique is best for me?
It depends on your vision type, corneal thickness, lifestyle, and budget. Consulting a specialized ophthalmologist is essential for finding the most suitable and effective option.

Back

Tags :

lasik

How long is LASIK recovery? The typical recovery period after LASIK is around 1–2 weeks. Vision gradually improves and fully stabilizes with proper follow-up and care as advised by your doctor. What should you avoid after LASIK? Use prescribed eye drops, avoid rubbing your eyes, keep water out of your eyes, refrain from wearing makeup for at least 2 weeks, and get enough rest to promote faster healing. How often should you follow up after LASIK? Schedule at least 5 follow-up visits — after 1 day, 1 week, 1 month, 3 months, and 1 year — to monitor recovery and address any issues. Annual eye exams after the first year are also recommended for long-term eye health. LASIK Surgery and the Importance of Proper Recovery LASIK is one of the most popular vision correction procedures. However, postoperative care and recovery play a vital role in ensuring your eyes heal quickly and safely. This guide explains how long LASIK recovery takes, what precautions to follow, and what you should avoid after surgery to help your eyes recover properly. LASIK Recovery Timeline Wondering how long it takes to recover after LASIK? Most people experience functional recovery within 1–2 days. However, vision clarity and stability develop over several phases: Day 1 (Immediately After Surgery) You’ll usually notice better vision right away, though not yet perfectly sharp. It’s normal to feel mild irritation, itching, or tearing during the first few hours. 24–48 Hours After Surgery Eye discomfort should start to subside, and your vision will become noticeably clearer. You can resume light activities such as watching TV or reading briefly, but avoid touching or straining your eyes. First Week Your vision will continue to stabilize and become clearer. You can return to computer-based work, but remember to rest your eyes frequently. First Month By this stage, your vision is typically clear and stable, and dry-eye symptoms should gradually improve. You can resume moderate exercise and physical activities. 6 Months – 1 Year Most patients reach full visual stability within this period. Dryness or minor fluctuations usually resolve completely. Post-LASIK Care: What You Should and Shouldn’t Do Many people wonder not only how long LASIK recovery takes, but also what they should avoid during this period. Proper care varies depending on recovery stage: The First Night After LASIK: Key Precautions Recovery speed depends greatly on how well you care for your eyes immediately after surgery. On the first night: Get adequate rest, but you may open your eyes and carry out basic activities through the small openings in the protective eye shields. If your surgery was done in the daytime, take a short nap for 2–3 hours afterward. If performed in the evening, go to bed early and take the prescribed mild sleeping pill after dinner. Do not remove your eye shields, unless instructed by your doctor. They prevent accidental eye rubbing or contamination. If your eyes water, gently dab around the shield — never underneath it. If the shields come loose, secure them again with medical tape. You can bathe and brush your teeth, but avoid water contact with your eyes. Use a damp towel to clean your face instead of washing it directly. First Week After LASIK: Dos and Don’ts During the first week, you should follow these care steps to promote safe recovery: Apply antibiotic drops and artificial tears regularly as prescribed. Continue to wear your protective shields at night to avoid eye rubbing. Keep water and dust away from your eyes. Do not rub your eyes under any circumstances. Avoid wearing makeup, especially around the eyes, for at least 2 weeks. Wear sunglasses outdoors to reduce irritation from bright light. After your 1-week follow-up exam, you can wash your face and hair normally without wearing the eye shields. Swimming is allowed about 2 weeks after surgery, once your doctor confirms full healing. Postoperative Checkups and Long-Term Care After LASIK, you should have scheduled checkups at least five times: 1 day, 1 week, 1 month, 3 months, and 1 year after surgery. During these visits, your ophthalmologist will check your vision stability, monitor for dryness, and ensure proper healing.Even after full recovery, an annual eye exam is recommended to maintain long-term eye health. A strong doctor–patient relationship is essential. Open communication allows timely adjustments to your treatment plan if results differ from expectations, ensuring the best possible visual outcome. Summary LASIK recovery typically takes about 3–7 days for clear vision to return, and most patients can resume light work within a week. However, strict self-care is essential — avoid rubbing your eyes, makeup, dust, and water exposure, and attend all scheduled follow-ups. If you’re looking for a trusted LASIK center, Bangkok Eye Hospital offers advanced technology, experienced ophthalmic surgeons, and personalized care to ensure a smooth and confident recovery — helping your eyes see the world more clearly than ever. Frequently Asked Questions (FAQ) About LASIK Recovery Here are answers to some of the most common questions about LASIK recovery time and post-surgery care — designed to help you feel confident at every step of the healing process. 1. How many days after LASIK can I wash my face? Recovery time varies by individual, but generally, you can wash your face after about 7 days. Avoid letting water directly enter your eyes during the first week to prevent infection and irritation. 2. What foods should I avoid after LASIK? Avoid spicy food, fermented products, alcohol, and unsanitary food. These can increase inflammation or infection risk, which may slow down recovery. 3. Can I drive home after LASIK surgery? No, you should not drive immediately after the procedure. Arrange for someone to drive you home on the day of your surgery to ensure safety.

What Causes Dry Eyes After LASIK and How to Care for Them

Dry eye after LASIK occurs due to the surgery affecting the function of the tear glands, causing reduced tear production and imbalance in the tear film, which leads to eyes feeling dry and less hydrated. Post-LASIK dry eye is usually not dangerous, but if left unmanaged, it can cause irritation or increase the risk of infection. You should consult a doctor if symptoms are severe or persist. Artificial tears after LASIK help moisturize the eyes, relieve dryness and irritation, promote faster recovery, and reduce the risk of complications. After LASIK, many people experience dry eyes, a common issue that can cause significant discomfort. Understanding the causes and proper care—such as using artificial tears or adjusting daily habits—can help restore eye health quickly and safely, allowing you to return to normal life comfortably. Causes of Dry Eye After LASIK The main causes of dry eye after LASIK are related to temporary effects of the surgery on eye function, such as: Corneal flap creation During LASIK, a laser creates a flap in the cornea, cutting some corneal nerves that normally send signals to the brain to stimulate tear production. This temporarily reduces tear production. Corneal surface inflammation LASIK causes mild inflammation on the corneal surface, affecting tear film balance. Normally, the tear film lubricates and protects the eye, but when it becomes unstable, tears evaporate faster, causing dry, irritated eyes. Frequent use of artificial tears can help restore moisture and relieve discomfort. Pre-existing dry eye Patients who already have dry eye before LASIK may experience worsened symptoms after surgery. The procedure affects tear glands and tear film, increasing dryness, irritation, and discomfort. Inform your ophthalmologist beforehand and prepare for close post-surgery care. Is Dry Eye After LASIK Dangerous? Dry eye is common after LASIK and usually not severe. It can cause discomfort, burning, or irritation for a period after surgery. The main reason is that surgery affects tear gland function and tear quality, reducing tear production. With proper care and following medical advice, dry eye usually improves and resolves within a few weeks to months. The Importance of Artificial Tears After LASIK The most effective way to relieve post-LASIK dry eye is frequent use of artificial tears as directed by your doctor, especially in the first week after surgery. Artificial tears contain moisturizing agents like hypromellose, sodium hyaluronate, or carboxymethylcellulose. They are essential for all LASIK patients, helping restore moisture, reduce burning, and relieve dry eye—a common side effect in the first six months after surgery. LASIK affects the cornea and tear production, making artificial tears crucial. Which Artificial Tears Should You Use? Artificial tears come in various types and formulations to suit individual needs, including: Preservative-free single-use vialsThese are used within 24 hours of opening, feel comfortable on the eyes, have lower risk of allergy, but are more expensive than preservative-containing versions. Self-Care to Relieve Dry Eye After LASIK Proper self-care is essential in addition to artificial tears, helping eyes recover fully. Recommendations include: Take regular breaksAvoid prolonged screen time. Follow the “20-20-20” rule: every 20 minutes, look at an object 20 feet (≈6 meters) away for 20 seconds to reduce strain and maintain moisture. Use eye shields as directedImmediately after surgery, use eye shields to protect from dirt and prevent irritation. Follow doctor instructions, usually for the first day and then nightly for one week, except when applying prescribed drops. Avoid dry environmentsStay away from direct air conditioning, fans, strong wind, or smoke, as these can worsen dryness. Artificial tears help maintain moisture in such conditions. Avoid water contactDo not swim, splash your eyes, or wash your face forcefully to prevent infection or interfere with healing. Avoid eye makeupEyes are sensitive after LASIK, particularly during dry eye recovery. Avoid makeup unless advised by your ophthalmologist, usually allowed one week after surgery. Avoid dustExposure to dust or dirt can cause irritation or infection. Protect eyes with glasses or masks if needed and wash hands before touching eyes. Support eye healthStay hydrated to promote natural tear production. Omega-3 supplements (fish oil or flaxseed) can improve tear quality and reduce dryness. Summary Dry eye after LASIK is a common side effect caused by surgery affecting tear production, leading to dryness and irritation. Proper care—such as preservative-free artificial tears, adequate hydration, and avoiding dust—helps relieve symptoms and speeds recovery. Choosing the right type of artificial tears according to doctor recommendations is important. Bangkok Eye Hospital provides LASIK with advanced technology and post-surgery care for safe and effective results. FAQ About Dry Eye After LASIK How long does dry eye last after LASIK? Symptoms usually improve and resolve within 3–6 months as corneal nerves recover, though some individuals may take slightly longer. Which artificial tears are best? Preservative-free artificial tears are recommended because they are gentle and can be used frequently without causing irritation. Always follow your doctor’s instructions. Can I wear contact lenses if my eyes are dry? No, avoid contact lenses during recovery, as they can increase friction, irritation, and complications.