Original articleThe Prevalence of Macular Telangiectasia Type 2 in the Beaver Dam Eye Study
Section snippets
Population
Methods used to identify and describe the population have appeared in previous reports.12, 13, 14, 15, 16 In brief, a private census of the population of Beaver Dam, Wisconsin, was performed from September 15, 1987, to May 4, 1988, to identify all residents in the city or township of Beaver Dam who were 43 to 84 years of age. Of the 5924 eligible individuals, 4926 participated in the baseline examination between March 1, 1988, and September 14, 1990.12, 13 Ninety-nine percent of the population
Results
Agreement among graders (absent vs present) for specific macular telangiectasia type 2 lesions varied from 100% (for yellowish spots) to 77% (for lamellar holes). Macular telangiectasia type 2 was present at baseline in 0.1% of the population (95% CI 0.09, 0.1). It was present in 1 woman and 4 men (Table 1). The mean age at baseline of those with macular telangiectasia type 2 was 63.4 (range 52–68) years; the mean age of those without macular telangiectasia type 2 was similar (62.3 [range
Discussion
Macular telangiectasia type 2 was present in 0.1% of the predominantly white Beaver Dam Eye Study cohort 43 to 86 years of age. Macular telangiectasia type 2 is considered by many retinal specialists to be a rare condition. Our data suggest that it may be more common than previously thought.11, 26 This may be attributable, in part, to its being asymptomatic in its early stages and to possibly being misclassified as age-related macular degeneration or a pattern dystrophy.
Based on the United
Barbara E. K. Klein is a Professor of Ophthalmology and Visual Sciences at the University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. She is interested in ocular epidemiology of age-related eye disease, including glaucoma, cataracts and diabetic retinopathy.
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Barbara E. K. Klein is a Professor of Ophthalmology and Visual Sciences at the University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. She is interested in ocular epidemiology of age-related eye disease, including glaucoma, cataracts and diabetic retinopathy.
Ronald Klein is a Professor of Ophthalmology and Visual Sciences at the University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin. He is interested in ocular epidemiology of age-related eye disease and hypertensive and diabetic retinopathy.