\vˈɪʒən dɪsˈɔːdə], \vˈɪʒən dɪsˈɔːdə], \v_ˈɪ_ʒ_ə_n d_ɪ_s_ˈɔː_d_ə]\
Definitions of VISION DISORDER
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Visual impairments limiting one or more of the basic functions of the eye: visual acuity, dark adaptation, color vision, or peripheral vision. These may result from EYE DISEASES; OPTIC NERVE DISEASES; VISUAL PATHWAY diseases; OCCIPITAL LOBE diseases; OCULAR MOTILITY DISORDERS; and other conditions. Visual disability refers to inability of the individual to perform specific visual tasks, such as reading, writing, orientation, or traveling unaided. (From Newell, Ophthalmology: Principles and Concepts, 7th ed, p132)
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Word of the day
- contrivance by which the dies used in screw-cutting are held. A contrivance to hold the dies for cutting screws.