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FAQ Frequently asked questions
What is vision loss?
Vision loss, sometimes called vision impairment, can be blurring or clouding of vision, distortion (straight lines appearing distorted or wavy) or spots/areas of vision that are blank or dark. In some cases, it's as simple as needing glasses or contact lenses, but in …
What causes vision loss?
Vision loss can occur for many reasons. It could be because of changes or damage to the eyes, or to the parts of the brain that are involved in vision. With some causes of vision loss, such as cataracts or macular degeneration, age is a factor.
How is vision loss detected?
An eye examination by an ophthalmologist or optometrist can help to detect vision loss. In some cases, changes in vision are sudden and easily noticeable and this can be a sign that there is a serious problem that requires immediate treatment. In other cases, …
What are the symptoms of vision loss?
Vision loss can be blurring or clouding of vision, distortion (straight lines appearing distorted or wavy) or spots/areas of vision that are blank or dark. Sudden changes in vision can be a sign that there is a serious problem that requires immediate …
What is refractive error?
Refractive error occurs when the cornea and lens do not clearly focus light onto the retina at the back of the eye. This means that vision can be blurry. The most common types of refractive errors are myopia (short-sightedness), hyperopia (long-sightedness) and …
What is legal blindness?
Blindness is often understood as complete loss of vision, but a person who is legally blind may have what is called low vision. Low vision is when a person has a significant, permanent loss of vision that cannot be corrected with glasses, contact lenses or other …
Can vision loss be prevented?
A regular eye examination can help to detect vision problems, even when there are no obvious symptoms. For several conditions that cause serious vision loss, early detection and treatment can help to preserve vision for as long as possible.
Are there different types of vision loss?
There are many different types of vision loss. It can include complete loss of vision (blindness), loss of parts of the vision, distortion of vision and blurring or clouding of vision.
About this article
Author: Kellie Heywood
First answered: 18 Sep 2014
Last reviewed: 19 May 2018
Rating: 4.1 out of 5
Votes: 84 (Click smiley face below left to rate)
Category: Vision loss