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All of these conditions can indicate you may be suffering from conditions causing vision loss. Night vision can be affected by many conditions including glaucoma, cataracts or night blindness. This is a common sign of macular degeneration.

Summary:
Note if you experience increased sensitivity to light. Contact your eye doctor if you have cloudy vision, double vision, or tunnel vision. Watch out for changes to your night vision. Be aware of holes, or blank spots, in your field or vision.