What does blood in the back of the eye signify, anyway?

It could be a retinal vein occlusion, an ocular disorder that can occur in older people where the blood vessels to the retina are blocked.

The retina is the back part of the eye where light focuses and transmits images to the brain. Blockage of the veins in the retina can cause sudden vision loss. The severity of vision loss depends on where the blockage is located.

Blockage at smaller branches in the retinal vein is referred...

There are several treatable eye diseases that at their earliest onset have few or no visual symptoms. In fact, the three leading causes of legal blindness in the United States all start with almost no visual symptoms detectable by the person suffering from the disease. The three diseases are macular degeneration, glaucoma, and diabetic retinopathy. Each of these diseases gets more prevalent as people age. That is why the American Academy of Ophthalmology recommends regular eye exams at more...