The American Academy of Ophthalmology is holding its annual meeting right now in San Francisco. Many "researchers" will be reporting the results of their research. Watch out for "too much information" over the internet!
Sudden loss of vision may be due to bleeding inside your eye. A vitreous hemorrhage can cause loss of vision in patients with diabetes. Sub-retinal hemorrhage may occur in patients with macular degeneration.
Intraocular injections are commonly used to treat macular degeneration and diabetic retinopathy. anti-VEGF medications are useful and successful treatment for these eye diseases. More "injections" are expected as more medicines are developed.