Visual Impairment – Key Terms

   

   

     o Visual acuity
     o Normal vision
     o Low vision
     o Blindness
     o Partially sighted
     o Errors of refraction
     o Nearsightedness

   

   

   

     o Farsightedness
     o Binocular vision
     o Spatial and tactual skills
     o Remaining sight
     o Motor skills
     o Long cane

   

   

   Physiology of the eye:

   ·        Cornea

   ·        Aqueous humor

   ·        Pupil

   ·        Lens

   ·        Sclera

   ·        Vitreous humor

   ·        Retina

   ·        Iris

   ·        Fovea

   ·        Optic nerve