
Low vision is partial vision loss which varies from person to person. Depending on the severity and type of vision impairment, the patient may have some useful vision.
Typically the impairment includes a significant reduction in visual acuity to worse than 20/70, hazy, blurred vision, blind spots or significant visual field loss and tunnel vision. Sometimes the extent of vision loss is considered to be legal blindness (20/200 or less visual acuity in the better eye) or almost total blindness.
Patients with low vision may have complete central or peripheral vision loss, blurry vision, poor low-light vision, loss of light sensitivity and/or loss of contrast, making daily activities such as writing, watching TV, driving or reading difficult or impossible.
Since the vision loss can’t be corrected, low vision requires significant adjustments to daily life and the help of techniques and specialized low vision aids to help you maximize your remaining vision to increase independence and quality of life.
Causes of Low Vision are:
Eye diseases such as: glaucoma, macular degeneration, cataracts, diabetic retinopathy, and retinitis pigmentosa.
Eye injury or brain injury.
Heredity.