Defining real change in prism-cover test measurements.

Purpose: To describe the interobserver test-retest variability of both simultaneous prism and cover testing (SPCT) and alternate prism and cover testing (APCT) in horizontal deviations, and to calculate 95% limits of agreement that might be used to define real change.

Design: Prospective cohort study.

Methods: Twenty-three patients with sixth nerve palsy and three controls were independently examined by two experienced strabismus surgeons.

Congenital dacryocystocele associated with intranasal cysts: diagnosis and management.

Objective: To improve the diagnostic and therapeutic database for congenital dacryocystoceles.

Study Design/methods: Retrospective case study of 10 patients with dacryocystoceles treated in an academic integrated tertiary care practice. Management and outcomes are compared to previous reports in the literature.