Abstract
Purpose :
The prevalence of dark without pressure (DWP) in the Chinese population is currently unclear. This study aims to determine the prevalence of DWP in the Chinese population, identifying factors influencing its prevalence, using clinical data from the Department of Ophthalmology at Peking University First Hospital.
Methods :
In this retrospective study, fundus image data from patients who visited our ophthalmology department between April and July 2023 were screened. Patients with fundus and systemic diseases were excluded, forming the control group. The study calculated DWP prevalence in the overall patients, the control group, and patients with common ocular diseases, also examining the association between DWP prevalence and variables such as gender and age.
Results :
The study enrolled 6787 patients meeting the inclusion criteria. Common fundus diseases included age-related macular degeneration (AMD), diabetic retinopathy, high myopia, uveitis, retinal hole (RH), retinal detachment, and retinal vein occlusion. DWP prevalence was 21.84% (1,481) in overall patients and 18.55% (565) in the control group. RH group had the highest DWP prevalence at 35.33%, with the lowest in the AMD group at 19.50%. Significant differences in the DWP prevalence were observed between the overall group and the fundus disease groups, excluding AMD and RD groups (P=0.249, P=0.064). A marked variance in DWP prevalence was noted between the control group and the fundus disease groups (excluding AMD group, P=0.632). DWP prevalence varied significantly across age groups (P<0.05), decreasing with age. No significant gender differences were observed between DWP patients and non-DWP patients (P>0.05).
Conclusions :
DWP is comparatively prevalent among ophthalmic patients, more so in those with common fundus diseases, and is predominantly found in younger age groups.
This abstract was presented at the 2024 ARVO Annual Meeting, held in Seattle, WA, May 5-9, 2024.