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Frequency of Optic Disk Hemorrhages in Adult Chinese in Rural and Urban China: The Beijing Eye Study
- Source :
-
American Journal of Ophthalmology . Aug2006, Vol. 142 Issue 2, p241-246. 6p. - Publication Year :
- 2006
-
Abstract
- Purpose: To determine the frequency of optic disk hemorrhages in the adult Chinese population. Design: Population-based prevalence survey. Methods: The study included 4439 subjects out of 5324 subjects invited to participate (response rate 83.4%) with an age of 40+ years. Mean age was 56.2 ± 10.6 years. Color optic disk photographs (45 degrees) were morphometrically examined. Results: Optic disk photographs were available for 8655 eyes of 4378/4439 (98.6%) subjects. Prevalence of disk hemorrhages was 107/8655 (1.24%; 95% confidence interval (CI): 1.00%, 1.47%) eyes. Occurrence of disk hemorrhages was significantly associated with glaucomatous optic nerve damage (P < .001; OR: 9.3; 95% CI: 5.6, 15.4) and age (P = .008; 95% CI: 1.01, 1.05). The occurrence of disk hemorrhages was not significantly associated with intraocular pressure (IOP) (P = .63; 95% CI: 0.97, 1.06), refractive error (P = .06; 5% CI: 0.87, 2.18), and visual field score (P = .81; 95% CI: 0.96, 1.03). Defining glaucoma as glaucomatous optic disk appearance, 20/107 (18.7%; 95% CI: 11.2%, 26.2%) disk hemorrhages were found in glaucomatous eyes. Out of 226 glaucomatous eyes, 20/226 (8.8%; 95%CI: 5.12%, 12.58%) eyes showed a disk hemorrhage. Hypertensive glaucoma eyes and normotensive glaucoma eyes did not vary considerably in frequency of disk hemorrhages (P = .44; OR: 1.82; 95% CI: 0.59, 5.68). Conclusions: Disk hemorrhages occur in a frequency of approximately 1.2% in adult Chinese. Major associated factors are glaucomatous optic neuropathy and age. Presence of a disk hemorrhage suggested glaucomatous optic nerve damage with a positive predictive value of approximately 20%. About 9% of glaucomatous eyes showed a disk hemorrhage at the time of examination. [Copyright &y& Elsevier]
- Subjects :
- *HEMORRHAGE
*EYE diseases
*GLAUCOMA
*OPTIC nerve
Subjects
Details
- Language :
- English
- ISSN :
- 00029394
- Volume :
- 142
- Issue :
- 2
- Database :
- Academic Search Index
- Journal :
- American Journal of Ophthalmology
- Publication Type :
- Academic Journal
- Accession number :
- 21766356
- Full Text :
- https://doi.org/10.1016/j.ajo.2006.02.032