Gangnam · Seoul · South Korea — English · 中文 · ไทย · Монгол · Tiếng Việt · Русский
WhatsApp +82-10-4138-3312 Instagram KOR

Ziemer Official Reference Doctor & KOL · One-on-One Care

Once the chance in your eyes!

Dedicated to
Your Vision.

Committed to Precision and Personalized Eye Care.

One doctor, dedicated to your care. Our lead ophthalmologist personally oversees every step of your journey, from your initial examination and surgery to post-operative follow-up care.

Chat with Us on WhatsApp Explore Treatments
English 中文 ไทย Монгол Tiếng Việt Русский On-site interpreters

One-on-One Care by Our Lead Doctor

From your initial consultation to surgery and post-operative care, the same dedicated ophthalmologist personally oversees every stage of your treatment.

Personalized Care for International Patients

Our English-speaking ophthalmologist and multilingual support team help international patients feel informed and comfortable throughout their visit, from the initial consultation to follow-up care. Language support is available in English, Chinese, Thai, Mongolian, Vietnamese, and Russian.

Same-Day Surgery Options for International Patients

For eligible patients, examination and surgery may be completed on the same day, helping you make the most of your time in Seoul.

About Us

Our Philosophy at EYEONCE

“Guided by Honesty and Integrity.”

정직과 원칙을 추구합니다.

3 Points of EYEONCE Eye Clinic Gangnam

01

Principle

Providing ethical, patient-centered care guided by clear medical principles.

02

Precise

Thorough examinations and precise, individualized treatment.

03

Patient-Oriented

We listen to your concerns and tailor every treatment plan to your individual needs.

Our Doctor

One Surgeon. Personalized Care from Start to Finish.

Extensive clinical experience combined with attentive, personalized care.

Dr. Dong Won Paik, Medical Director of EYEONCE Eye Clinic Gangnam

One-on-One Care

One doctor, fully responsible for your eyes.

  1. 1Examination & consultation
  2. 2Surgery
  3. 3Every follow-up

All performed personally by Dr. Paik — Ziemer Official Reference Doctor & KOL

Medical Director Ziemer KOL · CLEAR SUPRA X English-speaking

Dr. Dong Won Paik

백동원 대표원장

“I am committed to providing every patient with attentive, personalized eye care.”

As a single-surgeon clinic, EYEONCE provides continuity of care. Dr. Paik personally oversees your examination, performs your surgery, and manages your post-operative follow-up care.

Education

  • MD, Inje University College of Medicine
  • MS in Ophthalmology, Inje University

Societies

  • Partner Physician, Samsung Medical Center (SMC Partner)
  • Member, Korean Ophthalmological Society
  • Member, Korean Society of Cataract and Refractive Surgery
  • Member, American Society of Cataract and Refractive Surgery (ASCRS)
  • Member, Korean External Eye Disease Society
  • Member, Korean Contact Lens Society

Career

  • Ophthalmology Residency, Sanggye Paik Hospital, Inje University
  • Research Fellow, Catholic Institute of Visual Science, The Catholic University of Korea
  • Clinical Instructor, Cornea & Anterior Segment, Samsung Medical Center
  • Former Director, Soo Eye Clinic (Jeju)
  • Former Director, Apgujeong Eye Clinic
  • Former Director, Gangnam Smile Eye Clinic
  • Medical Director, EYEONCE Eye Clinic Gangnam

Recognized Expertise

Key Opinion Leader

CLEAR SUPRA X

Dr. Dong Won Paik has been designated an Official Reference Doctor by Ziemer Ophthalmic Systems AG in Switzerland and recognized as a Key Opinion Leader (KOL) for CLEAR SUPRA X technology. These distinctions reflect his clinical expertise and contributions to advanced laser vision correction.

Official Reference Doctor Awarded in August 2026 Presented at ESCRS 2023, Vienna Ziemer Ophthalmic Systems AG
Ziemer Key Opinion Leader certificate for CLEAR SUPRA X presented to Dong Won Paik, MD

15,000+

Surgeries at EYEONCE Gangnam

Vision correction & cataract

10+

Years as an eye surgeon

Before and since opening EYEONCE

5

Years of EYEONCE Gangnam

Celebrating our 5th anniversary

Treatments

The Right Vision Correction Procedure, Tailored to Your Eyes.

Laser Vision Correction

Lens & Cataract

Other Care

IPL Dry Eye Therapy Barrier Laser Glaucoma Care

Why EYEONCE

What makes EYEONCE different.

Not just the equipment — the doctor, the care and the support behind every surgery.

01

Official Reference Doctor, Ziemer Switzerland

Dr. Paik has been designated an Official Reference Doctor by Ziemer Ophthalmic Systems AG in Switzerland and recognized as a Key Opinion Leader for CLEAR SUPRA X. He personally performs each surgical procedure at EYEONCE.

Ziemer Ophthalmic Systems AG · KOL, August 2026

02

One-on-One Care & Long-Term Vision Support

From your initial consultation to post-operative care, Dr. Paik provides personalized, continuous care. If additional vision correction is medically appropriate, enhancement surgery may be available under our follow-up care policy.

Single-Surgeon Clinic · Dong Won Paik, MD

03

Presented at ESCRS Vienna 2023

Our research on Z8 CLEAR technology was presented at the 2023 European Society of Cataract and Refractive Surgeons (ESCRS) Congress in Vienna, Austria.

ESCRS Congress · Vienna, Austria, 2023

04

Samsung Medical Center Partner

Dr. Paik is affiliated with Samsung Medical Center as a partner physician and previously served as a Clinical Instructor in Cornea and Anterior Segment.

Former Clinical Instructor, Cornea & Anterior Segment, SMC

05

Care Planned Around Your Trip

We offer same-day examination and surgery for eligible patients, extended hours on Fridays, and appointments on the third Sunday of each month to accommodate international visitors.

Friday: Open until 8:00 PM | Third Sunday of Each Month: 9:30 AM–4:00 PM

06

On-site Interpreters in 6 Languages

Our multilingual support team helps you communicate comfortably throughout your treatment journey, from your first inquiry to post-operative follow-up.

English · 中文 · ไทย · Монгол · Tiếng Việt · Русский

Our surgical equipment+
Ziemer SUPRA X FEMTO LDV Z8 femtosecond laser

Ziemer FEMTO LDV Z8 SUPRA X

Femtosecond laser platform used for our vision correction surgeries:

SMILE PRO – SUPRA X CLEAR SMILE LASIK LASIK LASEK

Dr. Paik is a Ziemer Key Opinion Leader for CLEAR SUPRA X.

Dr. Dong Won Paik performing cataract surgery

Centurion Vision System

Phacoemulsification system for cataract surgery.

ZEISS OPMI Lumera i surgical microscope

ZEISS OPMI Lumera i

Surgical microscope for cataract and lens surgery.

IPL laser device

IPL

IPL treatment for dry eye care.

Precision Diagnostics

Precision Begins with a Thorough Eye Examination.

  • Comprehensive Eye Exam

    A comprehensive evaluation of your vision, intraocular pressure, cornea, and retina.

  • Retina Exam

    Advanced retinal imaging, including OCT and ultra-widefield photography, to assess retinal and macular health.

  • Glaucoma Exam

    Evaluation of intraocular pressure, optic nerve health, and visual field function.

  • Pre-op Surgery Exam

    Detailed corneal and ocular measurements to support surgical planning for vision correction and cataract procedures.

Optos Daytona
Optos DaytonaUltra-widefield retinal imaging
OCULUS Pentacam HR
OCULUS Pentacam HRCorneal topography
ZEISS IOLMaster 700
ZEISS IOLMaster 700Cataract biometry

Your Journey

Your Vision Correction Journey, Step by Step.

  1. STEP 1

    Book online

    Contact us via WhatsApp or email with your current prescription, if available, and planned travel dates.

  2. STEP 2

    Arrive in Seoul

    We recommend scheduling your examination early in your visit to Seoul to allow time for treatment and follow-up care.

  3. STEP 3

    Examination

    Undergo a comprehensive pre-operative eye examination and a personalized consultation with your ophthalmologist.

  4. STEP 4

    Same-day surgery

    Same-day surgery may be available if you are medically eligible.

  5. STEP 5

    Next-Day Follow-Up Examination

    We generally recommend allowing approximately one week in Seoul for surgery and post-operative follow-up, depending on the procedure.

  6. STEP 6

    Follow-up at home

    Our team remains available to answer your questions and provide follow-up guidance after you return home.

Getting to EYEONCE from Incheon International Airport

5th & 6th Floors, A TWOSOME PLACE Building

Reception: 5th Floor · Operating Room: 6th Floor

368 Sapyeong-daero, Seocho-gu, Seoul (Duo Sinnonhyeon). Right by Exit 9 of Sinnonhyeon Station — less than a 5-minute walk (Line 9 / Shinbundang Line).

Opening Hours

Mon · Tue · Thu
9:00 AM – 6:00 PM
Fri
9:00 AM – 8:00 PM Extended Hours
Sat
9:00 AM – 4:00 PM
Lunch
1:00 PM – 2:00 PM
Closed
Wed, Sun & public holidays
Open on the third Sunday of each month, 9:30 AM–4:00 PM.

Taxi

60–75 min

Most direct. Approx. ₩70,000–90,000.

AREX + Metro

≈ 90 min

Take the AREX Airport Railroad to Seoul Station, then transfer to the subway to reach Sinnonhyeon Station.

Airport Limousine

70–90 min

Take an airport limousine bus toward Gangnam, then a short taxi ride to the clinic.

Patient Reviews

Real reviews, verified on Google.

Patients from around the world share their experience publicly — read every review straight from the source.

4.9 Google rating
Read reviews on Google

Latest Google reviews

See all reviews on Google →
P

Paula H.

Local Guide · Sep 2026

Complete eye check-up

“I was at this clinic last week doing a complete check-up of my sight and loved the experience — latest generation machines, personalized attention and even had a translator all the time with me. Very friendly with the foreign country and excellent service.”

Read on Google →
J

Justin A.

English speaker · Jul 2026

CLEAR SMILE PRO surgery

“Had CLEAR SMILE PRO eye surgery & it was an incredible & seamless process! Had a very helpful translator which made it easy to understand what was going on. They were super transparent & communicated before, during, & after! Vision is doing phenomenal!!!”

Read on Google →
M

Mathilde L.

Local Guide · Sep 2026

Full eye exam & dry eye consultation

“I was honestly impressed by how thorough the examination was. They did so many different tests and were able to determine my prescription very precisely. The staff were professional and explained everything clearly throughout the process. … I thought the thoroughness was worth it!”

Read on Google →

Watch their journeys

More reviews on Instagram →
Reel

Patient Review 01

Reel

Patient Review 02

Reel

Patient Review 03

FAQ

Frequently asked questions

Can I have my consultation and surgery on the same day?+

Yes. If you are a suitable candidate after your examination, same-day surgery is possible. However, depending on your test results, surgery may need to be scheduled for another time or may require a waiting period.

How long should I stay in Korea after surgery?+

We recommend staying for one week, including the day of surgery. In some cases, you may be able to travel after your next-day follow-up examination. However, for your safety, we recommend discussing your travel schedule with us before making any plans.

Is it better to have surgery at the beginning or at the end of my trip?+

We recommend having surgery at the beginning of your trip so you have enough time for post-operative follow-up examinations and recovery before returning home.

Can I receive consultation in English?+

Yes. Our English-speaking doctor and dedicated staff are available, along with on-site interpreters for Chinese, Thai, Mongolian, Vietnamese, and Russian, ensuring comfortable communication throughout your consultation and treatment.

How is follow-up care handled after I return home?+

Your care doesn’t end when you leave Korea. Our medical team remains available to answer your questions and provide guidance throughout your recovery.

Clear vision starts with one message.

Tell us your prescription and travel dates — our team will plan your visit.

WhatsApp QR code for EYEONCE Eye Clinic Scan to chat on WhatsAppOpen your phone camera and scan the code to add us instantly.
WhatsApp+82-10-4138-3312 E-maileyeonceclinic@gmail.com Instagram@eyeonce_eng