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ReLEx SMILE vs SMILE Pro: Key Differences
  • SMILE Pro is a flapless laser vision correction procedure for myopia and astigmatism.
    It requires only a 2–4 mm incision, allowing faster recovery and a lower risk of dry eyes compared with traditional LASIK.
  • Unlike conventional LASIK, SMILE Pro does not create a corneal flap, helping preserve corneal strength and stability.
  • Most patients experience rapid visual recovery and can resume daily activities within 1–2 days after treatment.
  • If you are seeking a permanent solution for nearsightedness or astigmatism but are concerned about large corneal incisions, SMILE Pro may be the ideal option.
    This latest laser technology offers clearer vision with minimal discomfort, quicker recovery, and enhanced safety.
  • In this article, we will explain what SMILE Pro is, how it works, and who it is suitable for.

What Is SMILE Pro Laser Vision Correction

SMILE Pro is the latest generation laser vision correction technology developed by ZEISS, Germany.
It combines high precision with gentle treatment to the eyes, using a bladeless, flapless technique that minimizes discomfort and shortens recovery time.
This procedure is ideal for patients seeking safe, accurate, and fast visual rehabilitation.

What Is ReLEx SMILE Laser Surgery

ReLEx SMILE is a laser vision correction technique that differs from traditional LASIK by eliminating the need for a corneal flap.
Instead of using a blade, a femtosecond laser creates a small lenticule inside the cornea, which is removed through a 2–4 mm incision.

Differences Between ReLEx SMILE and SMILE Pro

ReLEx SMILE uses Femtosecond Laser technology to create a lenticule within the middle layer of the cornea, which is extracted through a small incision without opening a large corneal flap.

SMILE Pro is an advanced evolution of ReLEx SMILE, utilizing next-generation laser systems that reduce treatment time to 8–10 seconds per eye, compared to 25–30 seconds with ReLEx SMILE.

With enhanced speed and precision, SMILE Pro reduces eye movement risk, minimizes pressure during surgery, and improves overall comfort.
While both techniques are flapless, SMILE Pro offers superior accuracy, efficiency, and patient comfort.

Who Is Suitable for SMILE Pro

SMILE Pro is ideal for patients with myopia and astigmatism, especially those who:

  • Have an active lifestyle, such as athletes or outdoor enthusiasts

  • Prefer a flapless procedure without corneal flap creation

  • Are concerned about post-LASIK dry eye symptoms

  • Want a fast recovery and return to daily life within 1–2 days

Candidates should be 18 years or older, have stable vision, healthy corneas, and no eye diseases that may affect surgery outcomes.

Advantages of SMILE Pro

  • Flapless procedure reduces flap-related complications

  • Smallest incision (2–4 mm) for faster healing

  • Lower risk of dry eyes due to minimal nerve disruption

  • Preserves corneal strength and stability

  • High precision laser control with shorter surgery time

  • Corrects myopia up to -10.00 D and astigmatism up to -5.00 D

Limitations of ReLEx SMILE

Although ReLEx SMILE is safe and effective, it currently treats only myopia and astigmatism, not presbyopia or hyperopia.
Both ReLEx SMILE and SMILE Pro require specialized femtosecond laser equipment available only at certified centers.

SMILE Pro overcomes many limitations by offering faster treatment (≈8 seconds per eye), smaller incisions, enhanced accuracy using ZEISS VISUMAX® 800, and fewer post-operative complications.

Pre-operative Eye Evaluation for SMILE Pro

Before undergoing SMILE Pro, patients must complete a comprehensive eye examination (≈3 hours), including:

  • Automated refraction testing

  • Intraocular pressure measurement

  • Corneal curvature and refraction assessment

  • Corneal thickness imaging

  • Pupil dilation for retinal and optic nerve evaluation

These tests ensure precise treatment planning and optimal safety.

Preparation Before SMILE Pro Surgery

  • Arrive at least 2 hours before appointment

  • Wash hair beforehand; avoid makeup and perfume

  • Avoid alcohol before surgery

  • Wear comfortable clothing

  • Bring sunglasses and arrange a companion

  • Surgery takes about 30 minutes; no overnight stay required

SMILE Pro Surgical Procedure

  • Local anesthetic eye drops are applied

  • Femtosecond laser creates a lenticule inside the cornea

  • A 2–4 mm incision is made to remove the lenticule

  • Corneal curvature adjusts for clearer vision

  • Eye shield applied; patient returns home the same day

Post-operative Care After SMILE Pro

  • Avoid rubbing eyes

  • Wear eye shields while sleeping for at least 3 days

  • Prevent water exposure for 1 week

  • Use prescribed eye drops as directed

  • Limit screen time and strenuous activity

  • Attend follow-up appointments as scheduled

Visual Recovery After SMILE Pro

Most patients experience noticeable visual improvement within 24 hours and resume normal activities within 1–2 days.
Mild blurriness may occur during the first few hours but stabilizes within 1–2 weeks.
Dry eye symptoms are significantly lower compared to flap-based LASIK.

Summary

SMILE Pro is an advanced flapless laser procedure for correcting myopia and astigmatism.
It offers minimal discomfort, rapid recovery, and high precision using femtosecond laser technology.
A thorough eye evaluation and proper pre- and post-operative care are essential for optimal results.
Consult an ophthalmologist to determine whether SMILE Pro is right for you at Bangkok Eye Hospital.

Frequently Asked Questions (FAQ)

Where is the best place to get SMILE Pro?

Bangkok Eye Hospital offers expert ophthalmologists, advanced technology, and comprehensive care for optimal outcomes.

Can SMILE Pro treat age-related farsightedness?

Currently, SMILE Pro cannot treat presbyopia.

What vision range is suitable for SMILE Pro?

SMILE Pro typically corrects myopia from -1.00 to -10.00 D and astigmatism up to -5.00 D, pending corneal evaluation.

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ReLEx SMILESMILE ProLASIK
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