Perfect Freedom During the Day
Simply wear them during sleep (about 7-8 hours) and enjoy
daily life, sports, and study without glasses or regular contact lenses.
Gangnam Tokyo Eye Clinic
Ortho-K Lens
Clear vision that develops while you sleep
Ortho-K lenses correct vision overnight without surgery
specially designed high oxygen-permeable rigid lenses that
gently reshape
the central cornea during sleep,
a completely non-surgical vision correction method.
From childhood myopia management to adult lifestyle convenience,
our specialists' precision fitting delivers comfortable mornings.
3-Step Working Principle of Ortho-K Lenses
Wear Lenses Before Sleep
Custom-designed lenses gently
reshape the cornea with precision.
Vision Correction During Sleep
The lenses redistribute corneal epithelial cells to the periphery, flattening the central cornea. (Similar principle to LASIK surgery)
Remove Lenses After Waking Up
The corrected corneal shape is maintained for 1-2 days, allowing clear vision without glasses.
Why Do You Need Ortho-K Lenses?
Slowing Myopia Progression in Growing Children
Proven to slow myopia progression by approximately 40-60%
compared to regular glasses. The most effective way to prevent
children from developing high myopia.
Reversibility and Safety
Unlike surgery, no corneal tissue is removed.
Simply stop wearing the lenses to return to your original eye condition,
making it very safe with the option to switch to other vision correction methods anytime.
Freedom from Dry Eye Syndrome
Say goodbye to redness, foreign body sensation, and dry eyes caused by
daytime contact lens wear.
With nothing touching your eyes while awake,
eye fatigue is significantly reduced. Also highly effective for adults
working in dry offices or dusty environments.
01 04
Gangnam Tokyo Eye Clinic's 'Precision Design' Difference
With the same lens,
results depend on who designs the fit.
Just as every fingerprint is unique, so is the shape and elasticity of each cornea.
Drawing on Dr. Park Hyung-ju's analysis of tens of thousands of ocular data sets,
we anticipate your child's eye growth trajectory and calculate the optimal pressure and curvature
tailored to each adult's lifestyle to prescribe the perfect lens.
A Level of Precision Beyond Ordinary Lenses: Gangnam Tokyo Eye Clinic Ortho-K Design
Going beyond simple vision correction, Ortho-K lenses are designed with great complexity and delicacy to safely reshape the cornea.
Our '5-step multi-curve system' customized to each patient's corneal curvature delivers optimal correction results.
Structure of Ortho-K Lenses
- Base Curve (Central Optic Zone)
Presses the central cornea to effectively correct vision.
- Reverse Curve
Stabilizes the lens in position and secures space for cell migration.
- Alignment Curve (Fitting Curve)
Enhances adherence to the cornea and prevents lens decentration.
- Peripheral Curve
Facilitates tear circulation to maintain corneal health (oxygen supply) even during extended wear.
Ortho-K Correction Process
- STEP 01
Light focuses in front of the retina due to myopia/astigmatism
- STEP 02 (During Sleep)
Special lenses gently press the corneal epithelium to induce cell redistribution
- STEP 03 (After Waking)
The perfectly corrected corneal shape is maintained throughout the day
- STEP 04
Clear vision as if you had LASIK surgery, without glasses
Ortho-K lenses work on a similar principle to LASIK surgery, but are very safe as they do not cut the cornea. Specially designed lenses gently redistribute corneal epithelial cells to the periphery, flattening the central cornea just like surgery would.
Who Should Consider Ortho-K Lenses
A glasses-free day, clear vision achieved while you sleep
1
Children experiencing rapid myopia progression
The most effective early-intervention solution, suppressing myopia progression by 40-60% and helping prevent children from developing high myopia.
2
Active individuals limited by glasses or contact lenses
For those with hobbies requiring vigorous movement such as swimming, soccer, and dance, enjoy perfect freedom during the day without any visual aids.
3
Patients who prefer a non-surgical approach to vision correction
A non-surgical approach that does not cut the cornea. Simply stop wearing the lenses to return to your original eye condition, allowing you to choose with confidence and without worry about side effects.
4
Contact lens wearers struggling with dry eye and discomfort
By not wearing lenses during waking hours, eye fatigue and dryness are dramatically improved. Rediscover a comfortable daily life without artificial tears.