In its entirety, branch retinal vein occlusion generally carries a good prognosis. Some of the many patients of branch retinal vein occlusion do not require any medication or treatment because of two reasons:
First, because the blockage or clog did not interfere with the macula
Second, because the patients of branch retinal vein occlusion do not receive any significant decrease in the vision.
In fact, after one year, of 60% of branch retinal vein occlusion patients, untreated and treated, maintain better vision than 20/40.