Published on 09/05/2015 by admin
Filed under Opthalmology
Last modified 09/05/2015
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9.3
Myopic macular (foveal) schisis is a relatively common finding in eyes with high myopia and the prevalence increases with the degree of myopia. Mild cases do not necessarily impact visual acuity, whereas severe cases usually affect vision. Prior to the advent of OCT, this disorder was significantly under-recognized and poorly described.
When mild, macular schisis is difficult, if not impossible to appreciate clinically. The presence of macular schisis in the setting of high myopia is usually only presumed based on the concomitant presence of other associated features of pathologic myopia such as posterior staphyloma, lacquer cracks, and atrophy. More severe cases can be recognized by the diffuse cystic change in the macula, presence of subretinal fluid or development of lamellar or full-thickness macular hole.
OCT is critical in confirming the diagnosis and following the morphologic changes in myopic schisis. OCT can readily visualize subtle schisis that is often asymptomatic (Fig. 9.3.1
Handbook of Retinal OCT Optical Coherence Tomography
