Editing Myopia (section)

===Intrastromal corneal ring segment===
The [[Intrastromal corneal ring segment]] (ICRS), commonly used in [[keratoconus]] treatment now, was originally designed to correct mild to moderate myopia.<ref>{{cite journal | vauthors = Vega-Estrada A, Alio JL | title = The use of intracorneal ring segments in keratoconus | journal = Eye and Vision | volume = 3 | pages = 8 | date = 15 March 2016 | pmid = 26981548 | pmc = 4791885 | doi = 10.1186/s40662-016-0040-z | doi-access = free }}</ref> The thickness is directly related to flattening and the diameter of the ring is proportionally inverse to the flattening of cornea. So, if diameter is smaller or thickness is greater, resulting myopia correction will be greater.<ref name="AAO-ICRS">{{cite web | vauthors = Pathak AK, Villarreal Gonzalez AJ, Karacal H |title=ICRS: Corneal biomechanics effects |url= https://eyewiki.aao.org/ICRS%3A_Corneal_biomechanics_effects#:~:text=Thus%2C%20the%20smaller%20the%20diameter,thickness)%20with%20higher%20myopic%20correction.&text=This%20flattening%20effect%20on%20the,separation%20and%20increased%20corneal%20flattening.}}</ref>