SILK Surgery

SILK (Smooth Incision Lenticule Keratomileusis) is a refractive surgery method using the latest generation of Laser technology—a breakthrough in treating myopia and astigmatism without creating a corneal flap. This method uses an advanced Femtosecond Laser to carve out a lens-shaped biconvex lenticule inside the cornea based on proprietary technology from Johnson & Johnson, USA, and then extract that lenticule through a very small incision at the corneal periphery, helping restore optimal vision for the patient. The unique improvement in laser technology along with the biconvex lenticule design enables SILK to create seamless, smooth incisions with high precision, safety, and effectiveness, bringing a gentle, quick surgery and exceptional visual results.

SILK surgery is indicated for patients with myopia (with or without astigmatism) up to -12D, astigmatism up to -6D, with the total of myopia plus astigmatism ranging from -1.00D to -12.00D.

Elita Surgical System – A Breakthrough From The USA

Smallest Laser Spot Size

The laser beam measures 1 micron (µm), with a narrow, dense distribution of laser shots. This produces smooth, continuous incisions while minimizing time and force to remove the lenticule.

Lowest Laser Energy

SILK uses laser pulses with minimal energy (about 40–90 nJ) on the cornea—among the lowest of current laser devices—with an extremely short pulse duration (100–200 femtoseconds). This reduces heat spread to surrounding tissues, lowers the risk of thermal damage, and promotes faster healing.

Fastest Laser Speed

The laser operates at an ultra-fast frequency of 10 MHz , with only 1 micron between consecutive laser pulses, requiring just 16 seconds to create a precisely sealed lenticule without gaps, thus shortening the surgical time.

Biconvex Lenticule

The biconvex lenticule design ensures the front and back surfaces align without leaving corneal folds after extraction. This helps reduce higher-order aberrations. Because more corneal tissue around the edges is preserved, it better maintains corneal biomechanical strength and allows faster nerve regeneration, as fewer corneal fibers are cut.

How Does SILK Surgery Work?

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Step 1 – Creating the Lenticule

SILK uses the ELITA laser to gently create a small, disc-shaped piece of tissue (lenticule) in the cornea.

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Step 2 – Making the Incision

A tiny incision is created at the cornea periphery using the laser.

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Step 3 – Removing the Lenticule

The lenticule is gently removed through the incision. This reshapes the cornea and corrects the patient’s vision.

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01. Step 1 – Creating the Lenticule
02. Step 2 – Making the Incision
03. Step 3 – Removing the Lenticule

Advantages Of Silk Surgery

1. Gentle Surgical Experience: Thanks to smooth, seamless cuts, the lenticule extraction process is quick, minimizing discomfort during and after surgery.

2. Short Surgical Time: Each eye requires only 16 seconds of laser time and around 10 minutes for the entire procedure, saving time and making it more comfortable for patients.

3. Quick Recovery: The smooth, flawless incisions rapidly seal, allowing patients to regain optimal vision within just 24 hours.

4. Outstanding Visual Quality: The biconvex lenticule eliminates corneal folds, combined with smooth laser cuts that reduce higher-order aberrations, resulting in crisp, clear vision.

5. Minimized Dry Eye: The corneal nerve fibers on the surface and periphery are mostly protected, preserving the tear film and thus reducing postoperative dry eye.

6. Comprehensive Corneal Protection: The low-energy laser technology and short laser exposure decrease tissue damage. The exclusive biconvex lenticule design preserves corneal collagen fibers and nerve structures, maintaining biomechanical strength and providing maximum corneal protection.

Am I Suited For SILK Surgery?

Here are the conditions that you should meet to have SILK surgery for myopia and astigmatism:

Being at least 18 years old
Having stable refractive index (no increase of more than 0.75 diopters in the last 6 months)
Having no corneal structural abnormalities (Keratoconus)
Having appropriate corneal thickness
Having no diseases related to retina, lens, glaucoma
Having no inflammatory eye diseases such as conjunctivitis, keratitis, intraocular inflammation, and uveitis

Free intensive examination and consulting before myopia surgery

LASIK & PHAKIC SEMINAR

EVERY WEDNESDAY, SATURDAY AND SUNDAY.

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trước phẫu thuật cận thị MIỄN PHÍ!

What Should I Do Before My Surgery

DO NOTuse contact lenses before examination and surgery: at least 1 month for Orthor K overnight contact lenses, 2 weeks for soft and daily contact lenses.
EAT AND DRINK normally, do not use alcohol or stimulants on the day of surgery. Continue using your prescription drugs.
NO apply makeup and use cosmetics, keep your eyes and face clean on the day of surgery.
DO NOT wear tight pullovers or shirts made of fur
GET enough sleep and stay comfortable.
DO NOT drive by yourself on the day of the surgery.

“It's a blissful moment for us to see the joy in patients’ eyes and to listen to each patient's experiences after their myopia surgery. It motivates us to make more efforts on our journey with young people to liberate their eyes from their glasses and help them to enjoy life more freely.”

JAPAN INTERNATIONAL EYE HOSPITAL

For the Patients and their Future!

Japan International Eye Hospital
Leading in the refractive error treatment

Visit us for myopia examination and surgery, experience Japanese standard medical service with modern treatment technology, experienced doctors, strict procedures and dedicated care.

Breakthrough Technology from the USA

Japan International Eye Hospital is the first and only hospital in Viet Nam that currently owns the ELITA system from Johnson & Johnson (USA) for use in SILK surgery. This groundbreaking technology offers safe surgical procedures with exceptional quality for patients.

Leading Surgeons

Dr. Vu Anh Tuan (PhD, MD) is a top ophthalmic specialist in Vietnam, with nearly 30 years of experience and close to 100,000 eye surgeries performed. Our team of doctors is thoroughly trained, highly qualified, and dedicated to patient care.

Superior Japanese-Standard Medical Services

Our staff earnestly practices the philosophy of understanding and caring for patients with all our hearts, aiming to exceed expectations for every individual. We provide comprehensive support throughout your examination and surgery, ensuring you can feel at ease—even if you come alone.

Rigorous, Streamlined Process

All examination and surgery procedures are systematically designed and strictly supervised by both Vietnamese and Japanese quality control teams, ensuring accuracy, effectiveness, and optimal safety for our patients.

Frequently Asked Questions

Get answers to your questions related to surgery of myopia, hyperopia, and astigmatism by Ophthalmologists from the Japan International Eye Hospital.

Questions and Answers