Visual impairment in Australia: distance visual acuity, near vision, and visual field findings of the Melbourne Visual Impairment Project
AuthorTaylor, Hugh R.; Livingston, Patricia M.; Stanislavsky, Yury L.; McCarty, Catherine A.
Source TitleAmerican Journal of Ophthalmology
AffiliationMedicine, Dentistry and Health Sciences: Centre for Eye Research Australia
School of Medicine: Ophthalmology
Document TypeJournal (Paginated)
CitationsTaylor, H. R., Livingston, P. M., Stanislavsky, Y. L., & McCarty, C. A. (1997). Visual impairment in Australia: distance visual acuity, near vision, and visual field findings of the Melbourne Visual Impairment Project. American Journal of Ophthalmology, 123(3), 328-337.
Access StatusThis item is currently not available from this repository
Publisher's version restricted as per Elsevier's policy.
Purpose: To describe the age-specific and gender-specific rates of blindness and visual impairment in urban adults aged 40 years and older. Methods: A population-based sample of residents was recruited. Presenting and best-corrected distance visual acuities were assessed. Functional near vision was measured at each participant’s preferred distance. Visual field examination was performed with a Humphrey Field Analyzer (HFA); those unable to perform the field analyzer test attempted a Bjerrum screen or confrontation field. Results: The study population comprised 3,271 residents (83% of eligible) from ages 40 to 98 years; 54% were women. Overall, 56% of the study population wore distance correction; this was significantly lower in men but higher in the older age groups. Age-adjusted rates of blindness were 0.066% in men and 0.170% in women. Vision with current correction improved after refraction by gender and age. Direct age-standardized rates of functional near vision did not vary significantly by gender. Forty-six people had significant visual loss in their better eye. The proportion of participants with constriction of the visual field to within 20 degrees of fixation was similar for men and women when controlled for age (odds ration, 0.81; 95% confidence interval, 0.44 to 1.49) but increased significantly with age controlled for gender. Visual field abnormalities were detected in 548 right eyes (17%) and 533 left eyes (16%). Conclusions: Although overall rates of blindness because of visual acuity loss were relatively low, nearly three times more people had visual impairment because of visual field loss than visual acuity loss. These results highlight the need to target blindness prevention programs to the aging population, with a special emphasis on women.
KeywordsCERA; ophthalmology; Centre for Eye Research Australia; eye research; vision; visual health
- Click on "Export Reference in RIS Format" and choose "open with... Endnote".
- Click on "Export Reference in RIS Format". Login to Refworks, go to References => Import References