Hospitalizations in Brazil according to National Health Survey estimates, 2013 and 2019.

Objective: To compare the profile and prevalence of hospitalizations in Brazil based on estimates from the National Health Survey (PNS), 2013 and 2019.

Methods: A cross-sectional study that used data from the 2013 PNS and the 2019 PNS. The outcome was having been hospitalized for 24 hours or more in the last 12 months.

New considerations on pupillary block mechanism.

Purpose: To study the mechanisms of pupillary block in eyes with occludable angle by ultrasound biomicroscopy.

Methods: Initially, a pilot study of 13 eyes with acute primary angle-closure without medication was executed. Ultrasound biomicroscopy measurements of the angle, posterior chamber depth and iris thickness were performed in the temporal quadrant under light and dark conditions.