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One cause of cataracts is exposure to ultraviolet light. Provided the level of UV emission from lamps is within safe limits, and the lamp a sufficient distance away from the individual, there should be no increased risk of developing cataracts. Photophobia is a symptom of excessive sensitivity to light which affects 5 to 20% of the population ...
Particular medications make the skin more sensitive to sunlight; these include most of the tetracycline antibiotics, heart drugs amiodarone, and sulfonamides. Some dietary supplements, such as St. John's Wort, include photosensitivity as a possible side effect. Particular conditions lead to increased light sensitivity.
Photophobia is a medical symptom of abnormal intolerance to visual perception of light. [1] As a medical symptom, photophobia is not a morbid fear or phobia , but an experience of discomfort or pain to the eyes due to light exposure or by presence of actual physical sensitivity of the eyes, [ 2 ] though the term is sometimes additionally ...
Similarly to other antidepressants, SNRI medications have been found to cause visual snow syndrome, a condition characterized by visual static, palinopsia (negative after image), nyctalopia (poor vision at night), and photophobia (brighter presentation of lights or highlighted colors). Evidence shows that 8.9% of those taking SNRIs experienced ...
The primary causes include post-cataract surgery, certain medications, and, less commonly, neurological or ophthalmological conditions. Post-cataract surgery is a common cause, as replacing the natural lens with a synthetic one increases exposure to blue light, leading to temporary blue-tinted vision. This effect usually resolves as the eye adapts.
Central cataracts, due to the lens clouding, disperses the light before it can reach the retina and is a common cause of hemeralopia and photoaversion in the elderly. Cancer-associated retinopathy (CAR), seen when certain cancers incite the production of deleterious antibodies against retinal components, may cause hemeralopia.
Non-physiological causes of mydriasis include disease, trauma, or the use of certain types of drugs. It may also be of unknown cause. It may also be of unknown cause. Normally, as part of the pupillary light reflex , the pupil dilates in the dark and constricts in the light to respectively improve vividity at night and to protect the retina ...
Corticosteroids (for optic neuritis), other medications depending on the cause: Prognosis: Variable; some cases recover, others lead to permanent vision loss: Frequency: Common in individuals with risk factors (e.g., older adults, smokers) Deaths: None directly from optic neuropathy, but complications from underlying causes (e.g., stroke) can ...