Search

Purpose: To investigate the change in tear production associated with general anesthesia and the protective effect of vitamin A palmitate eye gel on the ocular surface during general anesthesia. Methods: This double-blind, randomized clinical trial included patients undergoing non-ophthalmic surgery under general anesthesia who randomly received vitamin A palmitate eye gel and taping for one eye (Group A, n = 60) or taping alone for the other eye (Group B, n = 60). Symptom assessment in dry eye (SANDE) score, tear film break-up time (TBUT), corneal fluorescein staining (CFS) score, and Schirmer tear test I (STT-1) were analyzed under a hand-held slit lamp before anesthesia (T0), 0.5 h postoperatively (T1), and 24 h postoperatively (T2). Results: At 0.5 h postoperatively, an increase in CFS score was observed in both groups (P < 0.05 in Group A and P < 0.01 in Group B), and the participants in Group A had less corneal abrasions than those in Group B. STT-1 significantly increased in Group A (P < 0.05), while it significantly decreased in Group B (P < 0.001). The changes between the two groups were statistically significant (P < 0.001). At 24 h postoperatively, both CFS score and STT-1 almost returned to baseline levels in the two groups. In both groups, the SANDE score and TBUT showed little change at 0.5 h and 24 h postoperatively (all P > 0.05). Conclusion: Vitamin A palmitate eye gel effectively protected the ocular surface and aqueous supplementation during general anesthesia. Trial registration: This study was registered in the Chinese Clinical Trial Registry (ChiCTR2100052140) on 20/10/2021. [ABSTRACT FROM AUTHOR]

Background Dry eye after uneventful phacoemulsification has been a common cause for patients’ dissatisfaction, despite good visual outcome. Tear film instability after cataract extraction has been attributed to multiple intraoperative and postoperative causes. Oral antioxidants have been proposed to decrease the objective and subjective symptoms of dry eye. Objective The aim of this study was to evaluate the effectiveness of oral antioxidant supplementation on dry eye after phacoemulsification. Patients and methods This is a randomized controlled clinical case series study that included 60 eyes of 60 patients. They were divided into two groups: group 1 was treated with oral antioxidants after surgery, whereas group 2 was not treated with oral antioxidants. The study was conducted at the Ophthalmology Department of Menoufia University Hospital in the period between January 2018 and January 2019. Follow-up for those patients were done by Schirmer’s test 1, break-up time test, and ocular surface disease index questionnaire preoperatively and at 1, 2, and 3 months postoperatively to evaluate oral antioxidant supplementation effect on dry eye after surgery. Results Three months after oral antioxidant supplementation following phacoemulsification, statistically significant differences (P