Are you at a higher risk of developing glaucoma? A comprehensive eye exam with an optometrist can detect glaucoma and prevent vision loss. #GlaucomaAwarenessMonth http://ow.ly/o1Xe30hVuH0

What is usually the first sign of glaucoma?
Loss of peripheral or side vision: This is usually the first sign of glaucoma. Seeing halos around lights: If you see rainbow-colored circles around lights or are unusually sensitive to light, it could be a sign of glaucoma. Vision loss: Especially if it happens suddenly.

Here is what Halos look like:

Source: Illinois Optometric Association