Yes, people who are blind or otherwise visually impaired may develop sleep problems be cause they are not taking in light that is crucial to their circadian rhythms. The most common disorder for patients who cannot see at all is non-24-hour sleep-wake disorder, a condition that affects up to 50 percent of blind patients without light perception.
Diagnosing a blind individual with a sleep disorder is a complicated process, with doctors relying on detailed clinical history and the patient’s sleep diaries.