Nyctalopia: Navigating the Psychology of Fear in Darkness
Scientifically Reviewed · Dr. Marwa Abd-Alazim · October 9, 2026
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Night blindness, also known as nyctalopia, is an eye disorder that causes difficulty seeing in low or dim lighting. It is caused by a lack of Vitamin A in the diet, insufficient retinal pigments, or retinal degeneration. People with night blindness may have difficulty seeing in dimly lit environments, such as at night or in a dark room. This can be dangerous and can lead to accidents or falls.
Night blindness is typically diagnosed by an eye doctor. During the exam, the doctor will evaluate the patient’s ability to see in low or dim light. He or she may also use an ophthalmoscope to look for any signs of retinal damage or disease. Treatment for night blindness depends on the cause. In cases where the patient lacks Vitamin A, dietary supplementation may be recommended. In other cases, such as if the night blindness is caused by a retinal disorder, further treatment or surgery may be necessary.
Night blindness is a common condition, though it is often overlooked or misdiagnosed. It is important to be aware of the signs and symptoms of night blindness so that it can be properly diagnosed and treated. People should also be aware of the potential causes of night blindness, such as Vitamin A deficiency, and take steps to prevent it.
References
Abeysundera, S., & Coroneo, M. (2012). Night blindness: Causes, diagnosis and management. Clinical & Experimental Ophthalmology, 40(4), 377–381. https://doi.org/10.1111/j.1442-9071.2012.02786.x
Kang, J. S., & Joo, C. K. (2020). A review of the diagnosis and treatment of night blindness. Korean Journal of Ophthalmology, 34(4), 365–371. https://doi.org/10.3341/kjo.2020.0015
Kim, Y. M., Lee, S. H., & Park, K. C. (2013). Clinical characteristics of nyctalopia. Korean Journal of Ophthalmology, 27(2), 96–101. https://doi.org/10.3341/kjo.2013.27.2.96
