[Recommendations for the use of ranibizumab in diabetic macular edema at IMSS].

Diabetic macular edema can occur at any stage of diabetic retinopathy. It represents the main cause of vision loss in diabetes type I and II with a prevalence of 3-10% in diabetic patients of the Instituto Mexicano del Seguro Social (IMSS). Our aim is to elaborate treatment guidelines and provide recommendations for the use of intravitreal ranibizumab for diabetic medical edema at IMSS.

Prevalence of dry eye syndrome in residents of surgical specialties.

Background: The aim of this study was to determine the prevalence and severity of dry eye syndrome in a group of Mexican residents of different surgical specialties.

Methods: A cross-sectional descriptive study where the residents were studied using the Ocular Surface Disease Index, together with diagnostic tests for dry eye syndrome, such as tear breakup time, Oxford Schema, Schirmer's test I, and meibomian gland dysfunction testing. Statistical analyses were performed by Pearson's chi-squared test for categorical variables and student's t-test for quantitative variables.

[Clinical practice guidelines. Diagnosis and treatment of diabetic retinopathy].

Objective: to develop a guideline available to the staff of the second and third level of medical care, that includes recommendations based on the best available evidence about diagnosis and management of diabetic retinopathy (DR).

Methods: clinical questions were formulated and structured. A standardized sequence was established to search for practice guidelines from the clinical questions raised on diagnosis and treatment of DR.