Effect of myopia on optical coherence tomography parameters

Abstract

Myopia is the most frequent form of ocular ametropia. Its prevalence varies according to race, being higher in oriental and lower in black races. The risk of glaucoma in myopic eyes is higher than in non-myopic eyes. Myopic glaucoma is considered to be a disease composed of “myopic optic neuropathy” “glaucomatous optic neuropathy,” which is often difficult to clearly differentiate from glaucomatous optic neuropathy. In glaucomatous eyes, the degeneration of retinal ganglion cells (RGC) and their axons usually precedes the reduction of visual function. Because the degeneration of RGCs results in characteristic changes in the optic nerve head (ONH), e.g., diffuse or localized thinning of the optic disc rim, ophthalmoscopy can be used to detect these changes. Unfortunately, the evaluation of the ONH is difficult in highly myopic eyes because of considerabl