Peer-reviewed

Imaging the Iris with Swept-Source Optical Coherence Tomography: Relationship between Iris Volume and Primary Angle Closure – Corrected Proof

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Objective: To measure iris volume and anterior segment parameters using a swept-source anterior segment optical coherence tomography (OCT) and investigate factors associated with iris volume and iris volume change after pupil dilation in eyes with open angles and angle closure.Design: Cross-sectional study.Participants: A total of 86 eyes, including 31 eyes from 21 patients with primary angle closure (PAC) or PAC suspect, 31 eyes from 20 patients with primary open-angle glaucoma (POAG), and 24 eyes from 15 normal subjects, were included.Methods: The anterior segment parameters and iris were imaged and measured by the Casia SS-1000 OCT (Tomey, Nagoya, Japan) in room (Read more...)

Peer-reviewed

Global Prevalence of Vision Impairment and Blindness: Magnitude and Temporal Trends, 1990–2010 – Corrected Proof

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Purpose: Vision impairment is a leading and largely preventable cause of disability worldwide. However, no study of global and regional trends in the prevalence of vision impairment has been carried out. We estimated the prevalence of vision impairment and its changes worldwide for the past 20 years.Design: Systematic review.Participants: A systematic review of published and unpublished population-based data on vision impairment and blindness from 1980 through 2012.Methods: Hierarchical models were fitted fitted to estimate the prevalence of moderate and severe vision impairment (MSVI; defined as presenting visual acuity <6/18 but ≥3/60) and the prevalence of blindness (presenting visual acuity <3/60) (Read more...)