Our top recommendation for CRT / Ortho-K Lenses : We recommend everyone to start with Unique Ph alone. If you like to have more cleaning power, you can combine Alcon Clear Care system with Unique Ph. If Unique Ph brand solution is not available, Boston Simplus can be used instead. Periodic use of Menicon Progent cleaner can remove stubborn protein buildups.

Our recommendation for Scleral Lenses : Alcon Clear Care to clean and store lenses then fill the lenses with Menicon Lacripure before inserting to eyes. Use of common soft contact lens “saline” solution to fill the lenses can cause lens irritation and lens intolerances issues. Blink Clear brand rewetting drops can be used to clear the blurry films while wearing lenses. Menicon progent cleaner can be added to maintain clarity of lenses.

For Hybrid lenses ( Synergeyes brand lenses) we recommend Alcon clear care to clean.


Dr. Youn added new GOV lens design to his battery of over night ortho-k lenses. GOV lenses are designed for patients with higher prescriptions and people with large or flat eyes. GOV lenses can be used for prescriptions up to -8 diopters with moderate astigmatisms. If you have been discouraged from CRT or ortho keratology procedures, consult Dr. Youn for new options.
oung and school age children. People older than 40 years of age are also very good candidates because their correction can be adjusted as often as necessary to reduce the use of reading glasses. Also patients who normally undergo frequent prescription changes are excellent candidates for CRT because of its flexibility. Additionally, due to the fact that CRT lenses are worn only at night, patients with sensitive eyes, mild dryness or contact lens sensitivity also make great candidates.