Compensatory contribution of retinal larger vessels to perfusion density in diabetics without retinopathy.

Vessel and perfusion densities may decrease before diabetic retinopathy appears; it is unknown whether these changes affect the contribution of vessel density to perfusion density. This was a non-experimental, comparative, prospective, cross-sectional study in non-diabetic subjects (group 1) and diabetics without retinopathy (group 2). Vessel and perfusion densities in the superficial capillary plexus were compared between groups at the center, inner, and full regions and by field (superior, temporal, inferior, nasal) using optical coherence tomography angiography.

[Efficacy of clinical evaluation in diagnosing injury zone in open globe ocular trauma].

Background: Risk of retinal damage in open globe eye injuries increases as the zone (location of the wound vertex) is more rearward. The value of clinical exploration to assess this variable is unknown.

Objective: To establish the efficacy of clinical exploration as a diagnostic test to identify the injury zone in open globe ocular trauma.