Link Between Sleeping Position and Asymmetric Visual Field Loss in OAG Patients
This retrospective, cross-sectional study investigated the relationship between preferred sleeping position and asymmetric visual field (VF) loss in open-angle glaucoma (OAG) patients.
A total of 692 patients with bilateral normal-tension glaucoma (NTG) or high-tension glaucoma were consecutively enrolled, and administered a questionnaire to determine the preferred sleeping position was administered to each patient. Asymmetric VF loss was defined as a difference in mean deviation between the two eyes of at least 2 dB. According to these values, the better eye and worse eye were defined. Among the patients with asymmetric VF loss, the numbers preferring the worse-eye-dependent lateral decubitus position and the better-eye-dependent lateral decubitus position were compared.
It was reported that, among the enrolled patients, (60.6%) with NTG and 121 (66.5%) with high-tension glaucoma had asymmetric VF between the two eyes. Among the 309 NTG patients, 100 (32.4%) preferred the lateral decubitus position. Of these, 66 (66.0%) preferred the worse-eye-dependent lateral decubitus position (p=0.001). Among the 121 high-tension glaucoma patients, 32 (26.4%) preferred the lateral decubitus position, and of these, 23 (71.9%) preferred the worse-eye-dependent lateral decubitus position (p=0.013).
These results suggest that the sleep position habitually preferred by glaucoma patients may be associated with greater VF loss