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 is often called the "silent thief of sight" because it can gradually damage vision for years before noticeable ...

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 ...