What is the meaning of blindness? Blindness is a lack of vision. It may also refer to a loss of vision that cannot be corrected with glasses or contact lenses. Partial blindness means you have very limited vision. Complete blindness means you cannot see anything and do not see light. (Most people who use the term “blindness” mean complete blindness.)
What causes a blindness? What are the main causes of blindness? The two main causes of sight loss are uncorrected refractive errors and cataracts. This is closely followed be age-related macular degeneration (AMD), glaucoma and diabetic retinopathy.
What happens in blindness? The lens may cloud, obscuring the light entering the eye. The eye’s shape can change, altering the image projected onto the retina. The retina can degrade and deteriorate, affecting the perception of images. The optic nerve can become damaged, interrupting the flow of visual information to the brain.
What is the meaning of the name blind? 1a(1) : sightless. (2) : having less than ¹/₁₀ of normal vision in the more efficient eye when refractive defects are fully corrected by lenses. b : of or relating to sightless persons. 2a : unable or unwilling to discern or judge blind to a lover’s faults. b : unquestioning blind loyalty.