Gray Optic Disc Crescent: Evaluation of Anatomic Correlate by Spectral-Domain OCT.

Purpose: To test the hypothesis that the anatomic correlate of the gray optic disc crescent is pigmentation of externally oblique border tissue of Elschnig.

Design: Retrospective study.

Participants: African-American adult men with or without clinically apparent gray optic disc crescents.

An upright eyedrop bottle: accuracy, usage of excess drops, and contamination compared to a conventional bottle.

Purpose: This study tested the feasibility of using an upright eyedrop bottle (UEB), a device designed to assist patients with eyedrop placement without reclining their head.

Patients And Methods: Experienced eyedrop users were enrolled who answered "yes" to the question, "Do you ever have trouble getting your eyedrops in?" After being shown a multimedia presentation and answering a questionnaire regarding eyedrop usage, participants were observed instilling eyedrops. Participants were instructed to instill a single eyedrop in each eye with both a standard bottle and the UEB.