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Purpose To investigate and compare the association of corneal hysteresis (CH) in patients with secondary glaucoma to those with primary open-angle glaucoma (POAG). Additionally, to determine the consistency of CH measurements in patients with secondary glaucoma. Methods A total of 84 patients (121 eyes) were prospectively included in this study. 23 patients (46 eyes) were healthy controls, 24 patients (40 eyes) were diagnosed with POAG, and 27 patients (35 eyes) were diagnosed with a form of secondary glaucoma. CH and intraocular pressure (IOP) were measured using the Ocular Response Analyzer. Three measurements per eye were performed and used for the analysis and to determine fluctuations in CH data. One-way ANOVA with post-hoc Bonferroni analysis and Chi-Squared testing was done to determine differences between groups. Results All patients were matched for age. Patients in both POAG and secondary glaucoma groups were matched for age and IOP. All groups had similar sex and racial compositions as well as similar proportions of diabetes, hypertension, and hyperlipidemia. CH was lower (p 0.05). Conclusion Patients with secondary glaucoma have lower CH when compared to POAG or control groups. The ORA exhibits precision of CH measurements for control, POAG, and secondary glaucoma groups.

PURPOSE To characterize trends in ocular tennis injuries over the last 20 years. METHODS The National Electronic Injury Surveillance System was utilized to characterize tennis-related eye injuries in a nationally representative sample of emergency department visits. Data were divided into 5 age groups, and various demographic information was obtained. RESULTS Approximately 16,000 tennis-related ocular injuries were identified with males being affected nearly 2:1 compared to females. The youngest age group (0–20) had the greatest proportion of injuries, with most injuries in boys 11–15 years old. Injuries occurred most often during the spring season. Most patients were treated and released from the ED. Of those patients who were hospitalized, one-third had an open globe injury. CONCLUSIONS The overall number of injuries trended downward during the timespan of the study. Although most patients did not experience serious visual consequences, the greatest proportion of ocular tennis injuries occurred in the pediatric age group in whom the risk of amblyopia is high. Primary care providers and tennis regulatory bodies should consider recommending eye safety sports goggles in children to mitigate the potential for significant visual morbidity.