Somerville, Massachusetts-based eye diagnostic tool maker EyeNetra raised $4 million from one investor, according to an SEC filing. This brings EyeNetra's total funding to at least $7 million.
Glaucoma often develops without pain or obvious symptoms, making early detection the key to preventing permanent vision loss.
There are typically no visual changes in the initial stages of glaucoma. As damage occurs to the optic nerve, people may develop blind spots in their peripheral visual field. Some can see halos and ...
Hemianopia is a loss of half a person’s peripheral vision. This means a person loses the right half or left half of vision in each eye. Hemianopia can occur from injury to the brain, such as a stroke.