Low vision is a condition in which a person has visual impairment that cannot be entirely corrected even with the best possible glasses. Many different diseases such as macular degeneration, glaucoma, diabetic retinopathy, and more can cause low vision. The World Health Organization uses the following classifications of visual impairment to determine its severity:
When the vision in the better eye with best possible glasses correction is:
• 20/30 to 20/60 is considered mild vision loss
• 20/70 to 20/160 is considered moderate low vision
• 20/200 to 20/400 is considered severe low vision
• 20/500 to 20/1000 is considered profound low vision
• Less than 20/1000 is considered near total blindness
• No light perception is considered total blindness
While it can take many forms, low vision can vary in degrees, and visual acuity alone is not always a good indicator. Some have relatively good acuity (20/40), but still have trouble functioning, but it does not have to diminish quality of life. People with low vision can be taught a variety of techniques that can be used to perform daily activities with whatever vision remains. Your optometrist can make all the difference if you suffer with this, so contact us today for an appointment!
For more information about this condition, visit the AOA site.