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Home Dr. Rundquist Low Vision Services Low Vision Devices Visual Impairments Insurances Low Vision Links FAQs A visual impairment is defined as an impairment of sight which cannot be adequately corrected with pharmaceutical or surgical interventions conventional prescription eyewear or contact lenses. The individual may have a loss of visual acuity loss of visual field increased light sensitivity distortion loss of color vision or loss of contrast. This creates difficulty with reading writing watching TV and performing activities of daily living which leads to a loss of independence.