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Abstract
A population-based study found an overall incidence rate of symptomatic retinal vein
occulusion (RVO) in a 4-year period to be 2.14 per 1,000 in the 40 years and over
age group. When cases found among glaucoma clinic patients were separated from the
remainder of the population there was marked difference in the incidence rate of RVO
in the same time period (1.85 and 17.3 per 1,000, respectively). The rate of RVO increased
significantly (p < 0.001) with age in the general population from 0.93 per 1,000 among
persons under 64 years of age to 5.36 per 1,000 among persons over 65. The increase
in the rate of RVO by age was less dramatic in the glaucoma clinic population. The
two populations also differed in the frequency of the occlusion type: the ratio of
the rate of branch vein occlusion to central vein occlusion was 3.2:1 in the general
population, but equally distributed in the glaucoma clinic population. Persons with
increased intraocular pressure and/or glaucoma were found to have a higher prevalence
of RVO than persons with no history of elevated intraocular pressure.