Micturition syncope and defecation syncope
May. 26, 2023
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(A) Vitreomacular traction is one mechanism by which macular holes can form. This hole is small and not well visualized in this picture. (B) In this OCT cross section, a faint representation of the vitreal interface can still be seen tugging on the macula (upper left). (Contributed by Dr. James Walters.)