What is Orthokeratology?

Orthokeratology is one of methods to control the progression of myopia. The children wear a special designed “hard” contact lenses while sleeping at night. The lenses will mold the shape of cornea in order to eliminate the refractive error of eyes. Thus, the children can see clearly without any glasses when they wake up in the next morning. In order to maintain the good vision during day time, children need to wear the lenses every night.

Children with strong refractive error (over -6.00) may not be able to eliminate completely by orthokeratology. They may have to wear spectacles during day time.
Several studies have proved that the progression of myopia can be reduced significantly by using Orthokeratology on children.*

This is because Orthok-lens can create an optical zone of blurry at the our periphery vision. The zone would stop or slow down the elongation of eyeball, as a result slow down the myopia progression.


Topo Pic 2topoIs it safe?

Orthokeratology is a safe, non-invasive method of controlling myopia progression. A successful orthokeratology depend on experience of optometrist as well as equipment. The compliance of client also is an important factor. Regular follow up by optometrist and proper care of lenses are keys to successful treatment.
The following tests would be done by optometrist during every follow-up visit:

  1. Vision test
  2. Ocular health monitoring with digital image records
  3. Corneal topography measurement
  4. Lenses checking with digital image records

Improperly cleaning and wearing of Ortho-K lenses would cause eye injury and infection. Thus, clients should  follow optometrist instruction,  follow-up regularly and replace the lenses if needed.

One fixed charge for all services

Our charge for Orhtokeratology is reasonable and clear. Services include:

  1. All eye examination fees including follow-up visits
  2. Replacement of  Ortho-K lenses ( damaged and missed lenses are not included)
  3. Contact lenses starter kit set
  4. Spectacles lenses for transition purpose (frame is not included)


→ Book appointment for Orhtokeratology


OrthoK fitting scheduleIn fact, some people are not suitable for Orthokeratology if they have the following conditions:

1. Serious ocular allergy
2. Poor tear quality and quantity
3. Tricharsis
4. Flat corneal curvature
5. High astigmatism
6. Poor corneal health

Our optometrist would examine your eyes carefully to determine whether Orthokeratology is a suitable method of myopic control treatment.

→ Book appointment for Orhtokeratology



Pauline Cho and Sin-Wan Cheung. (2012) Retardation of Myopia in Orthokeratology (ROMIO) Study: a 2-year randomized clinical trial. (FULL TEXT) Invest. Ophthalmol. Vis. Sci. Oct 11, 2012 Vol. 53 no. 11, doi: 10.1167/iovs.12-10565

Jeffrey J. Walline. (2012) Myopia Control with Corneal Reshaping Contact Lenses. (FULL TEXT)Invest. Ophthalmol. Vis. Sci. VOL 53 no. 11 PG 7086 doi: 10.1167/iovs.12-10996

T. Kakita, T. Hiraoka, T. Oshika.(2011) Influence of Overnight Orthokeratology on Axial Length Elongation in Childhood Myopia. (ABSTRACT) Investigative Ophthalmology & Visual Science January 2011 (Published online before print) doi: 10.1167/iovs.10-5485