day blindness

1. Scientists in Canada found one beer a day reduced the risk of cataracts – a major cause of blindness in old age.
   加拿大的科学家发现每天喝一杯啤酒可以降低得白内障造成老年失明的主要原因的风险。

noun

1. inability to see clearly in bright light

   Synonym:    hemeralopia