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Demographics are the physical characteristics of a population such as age, sex, marital status, family size, education, geographic location, and occupation. The demographics for the visually impaired population are changing rapidly. On a world-wide basis, many eye diseases once causing much blindness are now growing less prevalent with the introduction of advanced medical care in [...]
Visual impairment happens when one or more parts of the eyes or the parts of the brain needed to process the images sent from the eyes are damaged. This prevents a person from seeing properly. The terms “blind”, “blindness” or “Legally Blind” may also be used when you hear people talk about visual impairment. The [...]
This means sharpness of vision or the visual ability to resolve fine detail (usually measured by a Snellen chart). Visual acuity is expressed as a fraction. The top number refers to the distance you stand from the chart. This is usually 20 feet. The bottom number indicates the distance at which a person with normal [...]