Cluster analysis of autoantibodies in 852 patients with systemic lupus erythematosus from a single center.

Objective: Associations between autoantibodies and clinical features have been described in systemic lupus erythematosus (SLE). Herein, we aimed to define autoantibody clusters and their clinical correlations in a large cohort of patients with SLE.

Methods: We analyzed 852 patients with SLE who attended our clinic.

Refractive errors of medical students in Turkey: one year follow-up of refraction and biometry.

Purpose: This study was conducted to determine the prevalence of refractive errors in Turkish medical students as well as to determine the change in refractive status of medical students within 1 year. Besides general refractive characteristics of the students, the possible relationship between the occurrence of myopia and several factors was also determined.

Methods: Two hundred and seven medical students (114 female/93 male) were checked for their refractive status as determined by cycloplegic autorefraction.