Editing Myopia (section)

===Orthokeratology===
{{main|Orthokeratology}}
Orthokeratology or simply Ortho-K is a temporary corneal reshaping process using rigid gas permeable (RGP) contact lenses.<ref>{{cite web |title=Orthokeratology (Ortho-k) – Corneal Reshaping with GP Contacts |url=https://www.contactlenses.org/orthok.htm |website=www.contactlenses.org}}</ref> Overnight wearing of specially designed contact lenses will temporarily reshape cornea, so patients may see clearly without any lenses in daytime. Orthokeratology can correct myopia up to −6D.<ref name="OW-OK">{{cite web |title=Orthokeratology: A Heated Debate Continues |url=https://www.ophthalmologyweb.com/Tech-Spotlights/26435-Orthokeratology-A-Heated-Debate-Continues/ |website=www.ophthalmologyweb.com |language=en}}</ref> Several studies shown that Ortho-K can reduce myopia progression also.<ref name="AAO-OK">{{cite web |title=Orthokeratology slows myopic progression in young patients |url=https://www.aao.org/editors-choice/orthokeratology-slows-myopic-progression-in-young- |website=American Academy of Ophthalmology |language=en |date=17 April 2019}}</ref><ref name="MPC-OK">{{cite web |title=Orthokeratology (Ortho-K) treatment for Myopia Prevention and Control |url=http://www.myopiaprevention.org/orthokeratology.html |website=www.myopiaprevention.org |access-date=4 June 2020 |archive-date=6 February 2020 |archive-url=https://web.archive.org/web/20200206215037/http://www.myopiaprevention.org/orthokeratology.html |url-status=dead }}</ref> Risk factors of using Ortho-K lenses include microbial keratitis,<ref name="AAO-OK" /> corneal edema,<ref name="RO-OK">{{cite web | vauthors = Daniels K |title=Consider Ortho-K For Myopia Control |url=https://www.reviewofoptometry.com/article/consider-ortho-k-for-myopia-control#:~:text=Safety%20Concerns%20and%20Side%20Effects&text=As%20with%20all%20contact%20lens,ocular%20abrasion%20or%20visual%20distortion. |website=www.reviewofoptometry.com}}</ref> etc. Other contact lens related complications such as corneal aberration, photophobia, pain, irritation, redness etc. are usually temporary conditions, which may be eliminated by proper usage of lenses.<ref name="RO-OK" />