Ophthalmology
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To determine the relationship between high-altitude retinopathy (HAR) and other altitude-related illnesses and establish a classification system for HAR. ⋯ Recognizing advancing grades of HAR may allow physicians to recommend initiating empiric treatment with oxygen, steroids, diuretics and immediate descent to prevent HAR progression, macular involvement, or potentially fatal HACE. High-altitude retinopathy is both a significant component of and a predictor of progressive AI.
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Randomized Controlled Trial Comparative Study Clinical Trial
Control of intraocular pressure elevations after argon laser trabeculoplasty: comparison of brimonidine 0.2% to apraclonidine 1.0%.
To determine whether brimonidine 0.2% can control intraocular pressure (IOP) spikes as well as apraclonidine 1.0% can in those patients undergoing argon laser trabeculoplasty (ALT). ⋯ Brimonidine 0.2% appears to be as effective as apraclonidine 1.0% in preventing IOP spikes after argon laser trabeculoplasty.
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To evaluate optic disc and retinal nerve fiber layer (RNFL) appearance in normal, ocular-hypertensive, and glaucomatous eyes undergoing confocal scanning laser ophthalmoscopy and optical coherence tomography (OCT). ⋯ Both HRT and OCT can differentiate glaucomatous from nonglaucomatous eyes. RNFL thickness measurements using OCT correspond to disc topographic parameters using HRT.