Photophobia

photophobicsensitivity to lightlight sensitivitysensitivity of the eyes to lightdetests the lightdiscomfortextreme optic sensitivityeye sensitivity to lighthypersensitivity to lightinability to tolerate light
Photophobia is a symptom of abnormal intolerance to visual perception of light.wikipedia
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Concussion

concussionsconcussedmild traumatic brain injury
Common causes of photophobia include migraine headaches, TMJ, cataracts, Sjogren's Syndrome, Mild Traumatic Brain Injury (MTBI), or severe ophthalmologic diseases such as uveitis or corneal abrasion.
Visual symptoms include light sensitivity, seeing bright lights, blurred vision, and double vision.

Heliophobia

heliophobic
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, though the term is sometimes additionally applied to abnormal or irrational fear of light such as heliophobia.
Other medical conditions such as keratoconus (an eye disorder that results in extreme optic sensitivity to sunlight and bright lights), migraine which can be triggered by bright light, and porphyria cutanea tarda, which causes the skin to be overly sensitive to sunlight to the point of causing blisters, can result in heliophobia if the sufferer begins to associate pain and discomfort with bright lights.

Blepharitis

blephartiseyelidsgranulation of the eyelids
Blepharitis
Additional symptoms may include visual impairment such as photophobia and blurred vision.

Corneal abrasion

Corneal ulcercorneal abrasionscorneal damage
Common causes of photophobia include migraine headaches, TMJ, cataracts, Sjogren's Syndrome, Mild Traumatic Brain Injury (MTBI), or severe ophthalmologic diseases such as uveitis or corneal abrasion. Too much light entering the eye. Too much light can enter the eye if it is damaged, such as with corneal abrasion and retinal damage, or if its pupil(s) is unable to normally constrict (seen with damage to the oculomotor nerve).
Signs and symptoms of corneal abrasion include pain, trouble with bright lights, a foreign-body sensation, excessive squinting, and reflex production of tears.

Buphthalmos

buphthalmia
Buphthalmos
Patients with glaucoma often initially have no symptoms; later, they can exhibit excessive tearing (lacrimation) and extreme sensitivity to light (photophobia).

Achromatopsia

achromatachromaticachromatope
Achromatopsia
Included among these optical aberrations are greatly decreased visual acuity (

Keratitis

bacterial keratitisCorneal infectioninflammation of the cornea
Disruption of the corneal epithelium, such as that caused by a corneal foreign body or keratitis
The condition is often marked by moderate to intense pain and usually involves any of the following symptoms: pain, impaired eyesight, photophobia (light sensitivity), red eye and a 'gritty' sensation.

Anticholinergic

anticholinergicsanticholinergic druganticholinergic syndrome
Anticholinergic drugs may cause photophobia by paralyzing the iris sphincter muscle.
Pupil dilation; consequent sensitivity to bright light (photophobia)

Corneal ulcer

corneal ulcerationulcerationUlcerative Keratitis
Corneal ulcer
Sensitivity to light (photophobia) is also a common symptom of corneal ulcer.

Phobia

phobiasphobicfear
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, though the term is sometimes additionally applied to abnormal or irrational fear of light such as heliophobia.
Similarly, the term photophobia usually refers to a physical complaint (aversion to light due to inflamed eyes or excessively dilated pupils), rather than an irrational fear of light.

Keratoconus

Corneal ectasiaectasiaStriae of Vogt
Eye trauma caused by disease, injury, or infection such as chalazion, episcleritis, keratoconus, or optic nerve hypoplasia
Some develop photophobia (sensitivity to bright light), eye strain from squinting in order to read, or itching in the eye, but there is normally little or no sensation of pain.

Visual snow

Photophobia is a common symptom of visual snow.
Photophobia

Meningitis

spinal meningitisbacterial meningitiscerebral meningitis
Meningitis
Other symptoms include confusion or altered consciousness, vomiting, and an inability to tolerate light or loud noises.

Isotretinoin

13-cis retinoic acid13-cis-retinoic acidAccutane
Isotretinoin has been associated with photophobia
More rare ocular side effects include blurred vision, decreased night vision (which may be permanent), colour blindness, development of corneal opacities, inflammation of the cornea (keratitis), swelling of the optic disk (papilloedema, associated with IIH), photophobia and other visual disturbances.

Episcleritis

Eye trauma caused by disease, injury, or infection such as chalazion, episcleritis, keratoconus, or optic nerve hypoplasia
Patients with episcleritis experience far less photophobia than patients with uveitis.

Migraine

migrainesmigraine headachemigraine headaches
Common causes of photophobia include migraine headaches, TMJ, cataracts, Sjogren's Syndrome, Mild Traumatic Brain Injury (MTBI), or severe ophthalmologic diseases such as uveitis or corneal abrasion.
Associated symptoms may include nausea, vomiting, and sensitivity to light, sound, or smell.

Ankylosing spondylitis

spondylitis, ankylosingBekhterev’s diseaseBechterew's disease
Ankylosing spondylitis
About 40% of people with AS will also experience inflammation of the anterior chamber of the eye, causing eye pain, redness, floaters and sensitivity to light.

Photosensitivity in humans

photosensitivitylight sensitivitysun sensitivity
Photosensitivity in humans
Intensity of light (photophobia, sunburn, skin cancer)

Cystinosis

nephropathic cystinosis
Cystinosis
The buildup of these crystals in the eye causes an increased sensitivity to light (photophobia).

Photic sneeze reflex

ACHOOphotic sneezePhotic sneezing
Photic sneeze reflex, a medical condition by which people exposed to bright light sneeze
This is similar to the mechanism by which photophobia develops by persistent light exposure relaying signals through the optic nerve and trigeminal nerve to produce increased sensitivity in the ophthalmic branch.

Tyrosinemia type II

Type II Tyrosinemia
Tyrosinemia type II
Symptoms often begin in early childhood and include excessive tearing, abnormal sensitivity to light (photophobia), eye pain and redness, and painful skin lesions on the palms and soles.

Symptom

symptomssymptomaticnon-specific symptom
Photophobia is a symptom of abnormal intolerance to visual perception of light.

Light

visible lightvisiblelight source
Photophobia is a symptom of abnormal intolerance to visual perception of light.

Fear

terrorapprehensionfears
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, though the term is sometimes additionally applied to abnormal or irrational fear of light such as heliophobia.

Greek language

GreekAncient GreekModern Greek
The term photophobia comes from the Greek φῶς (phōs), meaning "light", and φόβος (phóbos), meaning "fear".