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WikiDoc Resources for Photophobia


Most recent articles on Photophobia

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Articles on Photophobia in N Eng J Med, Lancet, BMJ


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Photos of Photophobia

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Evidence Based Medicine

Cochrane Collaboration on Photophobia

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Guidelines / Policies / Govt

US National Guidelines Clearinghouse on Photophobia

NICE Guidance on Photophobia


FDA on Photophobia

CDC on Photophobia


Books on Photophobia


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Blogs on Photophobia


Definitions of Photophobia

Patient Resources / Community

Patient resources on Photophobia

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Directions to Hospitals Treating Photophobia

Risk calculators and risk factors for Photophobia

Healthcare Provider Resources

Symptoms of Photophobia

Causes & Risk Factors for Photophobia

Diagnostic studies for Photophobia

Treatment of Photophobia

Continuing Medical Education (CME)

CME Programs on Photophobia


Photophobia en Espanol

Photophobia en Francais


Photophobia in the Marketplace

Patents on Photophobia

Experimental / Informatics

List of terms related to Photophobia

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Ogheneochuko Ajari, MB.BS, MS [2]

Synonyms and keywords: Light sensitivity; Vision-light sensitive; Eyes-sensitivity to light


Photophobia (also light sensitivity) or fear of light, is a symptom of excessive sensitivity to light and the aversion to sunlight or well-lit places. In medical terms, it is not fear, but an experience of discomfort or pain to the eyes due to light exposure.


Light sensitivity is usually due to too much light entering the eye, which causes over stimulation of the photoreceptors in the retina and subsequent excessive electric impulses to the optic nerve. This leads to a reflex aversion to light, and discomfort or pain. Too much light can enter the eye if it is damaged, such as with corneal abrasion and retinal damage, or if a pupil(s) is unable to normally constrict (seen with damage to the oculomotor nerve).


Patients may develop photophobia as a result of several different medical conditions related to the eye or the nervous system.



Patients with photophobia will avert their eyes from direct light (sunlight and room lights), or may seek the shelter of a dark room or wear sunglasses.

Photophobia is also a behavior demonstrated by insects or other animals which seek to stay out of the light.

Physical Examination



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