An individual with a visual impairment has a reduction in their ability to see, ranging from partial sight, to total loss of vision.
A visual impairment, even with correction, adversely affecting a child’s educational performance; includes both partially seeing and blind children(Backto Top) Weak measure: Measure lacking adequate evidence of validity and reliability
Any impairment to a person physically which restricts their vision to less than that available to most healthy adults. The term began to replace the more cumbersome 'blind and partially sighted' in the last quarter of the twentieth century.
A general term for disabilities affecting sight, including blindness, colour blindness and low vision. Wherever possible the RNID website has been designed to support users with a visual impairment, and to be accessible by users of assistive technologies such as Braille displays, screen readers and screen magnifiers. All the text on our website can be enlarged by changing the settings in your browser to help legibility.
an impairment of sight that cannot be corrected by glasses or contact lenses
a vision loss that, even with best correction, adversely affects educational performance
A loss in visual acuity or a loss of visual field, as determined by evaluation pursuant to section 15-766, that interferes with the child's performance in the educational environment and that requires the provision of special education and related services. (A.R.S. §15-761)
Refers to conditions where people are blind, color blind, or have reduced vision capabilities. Often, these people will use assistive technologies like screen readers or magnifiers to help them use computers and navigate through Web sites.
Having a mild to severe vision disorder, which adversely affects a child's educational performance.
A generic term which refers to a wide range of visual problems. These problems can range from mild interfaces of the visual system to total blindness.
Impairment of the sense of sight, from minor visual loss to total absence of sight, including defects of visual acuity (clarity and acuteness of vision), limitations of the field of vision, defective colour vision. Causes include malformation of the cornea, the lens or globe of the eye, hereditary diseases of the eye, maternal rubella (German measles in pregnancy). For teaching purposes, an assessment of functional vision is made and this and other information is used to design a suitable education programme. Provision may include special teaching materials, low vision aids and equipment and ensuring suitable levels of illumination for work
A broad term used to describe a condition which limits someone's ability to use their visual senses, and makes them rely more heavily other senses to compensate, such as hearing and touch. Most commonly used to describe blindness, but it also can refer to colour blindness and low or blurred vision.
Visual impairment or vision impairment is vision loss that constitutes a significant limitation of visual capability resulting from disease, trauma, or a congenital or degenerative condition that cannot be corrected by conventional means, including refractive correction, medication, or surgery.Arditi, A., & Rosenthal, B. (1998). "Developing an objective definition of visual impairment." In Vision '96: Proceedings of the International Low Vision Conference (pp. 331-334).