0: No or mild visual impairment – presenting visual acuity better than 6/18 Category 1: Moderate visual impairment – presenting visual acuity worse than...

Cortical visual impairment (CVI) is a form of visual impairment that is caused by a brain problem rather than an eye problem. (The latter is sometimes...

Visual impairment in art is a limited topic covered by research, with its focus being on how visually impaired people are represented in artwork throughout...

Communication disorders; Hearing impairments; Visual impairments; Mobility impairments; A learning disability or impairment in mental functioning. Each kind...

of the eye, so often progress from color blindness to more severe visual impairments, up to and including total blindness. Physical trauma can cause color...

World Health Organization, the near visual acuity less than N6 or M0.8 at 40 cm is classified as near visual impairment. Presbyopia is physiological insufficiency...

neurological visual impairment (NVI). NVI and its three subtypes—cortical blindness, cortical visual impairment, and delayed visual maturation—must be...

to the location of visual loss. The most commonly accepted theory for Charles Bonnet syndrome proposes that extreme visual impairment promotes sensory deafferentation...

impairments (head injury, autism, developmental disabilities) and learning disabilities, (such as dyslexia, dyscalculia, or ADHD). Visual impairment,...

or language impairment as "a communication disorder, such as stuttering, impaired articulation, language impairment, or a voice impairment, that adversely...