Color Vision Deficiency (CVD) is the inability to distinguish between some colors and shades. Most people with this condition can identify some colors. Few people are totally "color blind." Color filters, such as a special red contact lens worn on one eye or prescription glasses may be used to help some people with a color deficiency. In addition, talking products are available that will scan a color and announce a description of the color (originally designed for individuals who are blind).
Vision Enhancement products are portable low vision aids that can be worn with glasses or head-mounted for persons with low vision.These devices may be used for a variety of distance and midrange visual activities such as seeing faces, TV, the blackboard in school, computer screens, packages on shelves, dialing the telephone, and signs while traveling etc. These products will not restore vision to normal.
Optical Character Recognition (OCR) Systems - Scan
Optical Character Recognition (OCR) technology allows people with a vision impairment to scan printed text and receive a synthetic speech output or save it to a computer. Currently, OCR technology cannot convert handwriting to voice output.Optical Character Recognition (OCR) has three factors: scanning, recognition, and reading text. First a camera scans the printed document. Next, OCR software converts the image into recognizable characters/words. Then the user can store the information in electronic form to a computer or the OCR system itself.
Products include voice output (screen reading capabilities) and other tools to enhance the reading for individuals with reading difficulties. Other features may include: screen highlighting, study skills, test taking, and Internet tools.