Vision Impairments

Overview

 

 vision impairment refers to when you lose part or all of your ability to see (or vision). The impairment must persist even with the use of eyeglasses, contact lenses, medication, or surgery.

Three Types of Vision Impairments

The types of vision impairments are low visual acuity, blindness, and legal blindness (which varies for each country):

Low visual acuity, also known as moderate visual impairment, is a visual acuity between 20/70 and 20/400 with your best corrected vision, or a visual field of no more than 20 degrees


Legal blindness in the United States is a visual acuity of 20/200 or worse with your best corrected vision or a visual field of no more than 20 degrees.

 

Symptoms

  • Severe, sudden eye pain
  • Recurrent pain in or around the eye
  • blurred, or double vision
  • Seeing flashes of light or sudden bright floating spots
  • Seeing rainbows or halos around lights
  • Seeing floating "spider webs"
  • Seeing a "curtain coming down" over one eye
  • Unusual, even painful, sensitivity to light or glare
  • Swollen, red eyes
  • Changes in the color of the iris
  • White areas in the pupil of the eye

 

Medicine

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