Day Blindness (Hemeralopia) Day blindness, also known as hemeralopia, is a condition in which a person's ability to see clearly in bright light or daylight is reduced, such as during the day or in a brightly lit environment.While vision in dim or low-light conditions remains normal,this is in contrast to nyctalopia (nighttime blindness), where vision is lost in low light conditions,and various factors can contribute to hemeralopia.If you experience difficulty with daytime vision, consult with an eye care professional for proper evaluation and guidance. Causes of Day Blindness The most common causes of day blindness (hemeralopia) are vitamin and mineral deficiencies and certain genetic developments can cause hemeralopia, chronic or long-term injury or disease affecting the accessory nerve can also cause day blindness. Cataracts: Cloudiness in the lens of the eye can cause sensitivity to bright light and difficulty seeing in daylight or difficulty seeing clearly in any lighting cond...
