Nyctalopic refers to a person with night blindness, a condition where one cannot see properly in low-light conditions. There are several synonyms for the term nyctalopic such as night blindness, impairment of night vision, hemeralopia, and night sight. The term hemeralopia refers to the same condition in medical terms. Night blindness is a more commonly used term, but some people might find it insensitive. Another synonym for nyctalopic is impaired night vision, which describes the condition more precisely. Lastly, night sight is a term used to describe the ability to see in the dark, which is something a person with nyctalopia lacks, making it an opposite term.