Medical Definition of Intrastromal corneal ring
Intrastromal corneal ring: A plastic ring that is designed to be implanted in the cornea, the transparent structure at the front of the eye, to flatten the cornea and thereby reduce the degree of nearsightedness (myopia). The ring is placed in the corneal stroma, the middle of the five layers of the cornea.
Last Editorial Review: 7/1/2016
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