10 Warning Signs of Poor Vision

8. Loss of color

If you lose the color in your vision and can't differentiate between blue and green and different reds, you may be suffering from poor vision. It's the same principle if you see halos around lights at night time or blurry during the day. All of these symptoms may be an early sign of cataracts. Cataracts are the most common form of vision loss in people over 40 in America, and it appears by clouding the eye's natural lens. Cataracts start small and grow over time. If untreated, they lead to vision loss.