Abstract
BackgroundRetinal vein occlusion (RVO) is a common retinal vascular disease that causes a loss of vision. Therefore, we investigated whether there is seasonal variation in the onset of RVO, to examine the possibility of preventing it.MethodsPatients with RVO who were treated at the Juntendo University Urayasu Hospital between April 2013 and March 2017 were included in this retrospective study. The season in which the RVO occurred was recorded for each case, and the cases were grouped into six 2-month periods based on the month of RVO, and classified by age, sex and hypertension status. The frequency of occurrence of RVO across seasons was compared using a chi-squared test.ResultsA total of 348 patients with RVO presented during the study period, with information regarding the date of RVO onset. The cohort of 348 consisted of 167 males and 181 females who, overall, had a mean age of 64.0 years (range 17–96 years). The highest incidence of RVO onset was during January/February, with the lowest incidence during July/August. Patient age, sex and hypertension status did not influence the results.ConclusionsThe seasonal onset of RVO tended to be higher in January/February and May/June, and lower in July/August. These findings suggest that eyecare professionals should be more vigilant in watching for the occurrence of RVO during winter and the rainy season, regardless of the patient’s sex, age or hypertension status.
Highlights
Retinal vein occlusion (RVO) is a common retinal vascular disease that causes a loss of vision
The retinal vein narrows from mechanical pressure caused by arteriosclerosis, either within the arteriovenous crossing site in branch retinal vein occlusion (BRVO), or within the lamina cribrosa in central vein occlusion (CRVO), resulting in impairment of the venous blood flow
Of the 348 patients with a known onset date, 281 patients were diagnosed with BRVO and 67 patients with CRVO
Summary
Retinal vein occlusion (RVO) is a common retinal vascular disease that causes a loss of vision. Retinal vein occlusion (RVO) is a one of the vascularocclusion diseases. The retinal vein narrows from mechanical pressure caused by arteriosclerosis, either within the arteriovenous crossing site in branch retinal vein occlusion (BRVO), or within the lamina cribrosa in central vein occlusion (CRVO), resulting in impairment of the venous blood flow. This can contribute to stasis, thrombosis and occlusion. Cerebral infarction and myocardial infarction are vascular occlusions similar to RVO.
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