hemeralopia /hem′ərəlō″pē·ə/ [Gk, hemera, day, alaos, blind, ops, eye] , an abnormal visual condition in which bright light causes blurring of vision. Also called day blindness, night sight. −hemeralopic, adj. ▪ OBSERVATIONS: Hemeralopia is an unpleasant side effect of certain anticonvulsant medications, including trimethadione, prescribed in the treatment of children with petit mal epilepsy. ▪ INTERVENTIONS: Identification of the underlying cause is important. In addition to being a side effect of medication, it may be associated with cataracts, genetic disorders, or brain injury. ▪ PATIENT CARE CONSIDERATIONS: Sunglasses and adjustment of lighting will help patients be more comfortable.
