Bilateral acute depigmentation of the iris (BADI) is a rare, recently described eye condition characterized by the sudden onset of pigment loss from the iris ...

Bilateral acute iris transillumination (BAIT) is a rare eye condition in which both irises suddenly lose their pigment, allowing light to shine through the ...

Bietti Crystalline Dystrophy (BCD) is a rare, progressive chorioretinal degeneration characterized by numerous small, yellow-white crystalline deposits in the ...

Bickerstaff Brainstem Encephalitis (BBE) is a rare autoimmune condition in which the body’s own immune system mistakenly attacks the brainstem—a critical area ...

Bestrophinopathies are a group of inherited eye disorders that affect the retina, particularly the macula—the central part responsible for sharp, detailed ...

Best disease, also known as vitelliform macular dystrophy, is an inherited eye disorder that primarily affects the macula—the part of the retina responsible ...

Bergmeister papilla is a tiny, benign growth seen on the optic disc of the eye. It represents a remnant of the fibrous sheath that once surrounded the fetal ...

Benign Yellow Dot Maculopathy is a rare, non-progressive condition characterized by tiny, discrete yellow spots located around the central part of the retina ...

Benign Paroxysmal Positional Vertigo (BPPV) is a common inner-ear disorder that causes brief episodes of spinning sensation (vertigo) when you move your head ...

Benign Lobular Inner Nuclear Layer Proliferations (BLIPs) are a recently recognized, noncancerous type of intraretinal tumor that originates within the inner ...

Benign episodic pupillary dilation—also known as benign episodic mydriasis (BEM) or benign episodic pupillary dilation (BEPD)—is an isolated, recurrent ...

Benign Episodic Mydriasis (BEM) is a rare, non-dangerous eye condition characterized by sudden, temporary pupil enlargement (mydriasis) that recurs in episodes ...

Behr syndrome is a rare genetic disorder characterized by the early loss of vision due to optic nerve atrophy, coupled with progressive degeneration of the ...

Behçet’s disease is a rare, chronic inflammatory disorder that affects blood vessels throughout the body. It most often appears in people aged 20 to 40 and is ...

Batten disease, formally known as neuronal ceroid lipofuscinosis (NCL), is a group of rare, inherited neurodegenerative disorders characterized by the abnormal ...

Basal laminar drusen (BLD), also known as cuticular drusen or early adult‐onset grouped drusen, are tiny, yellowish deposits that form beneath the retinal ...

Basal cell carcinoma (BCC) is the most common form of skin cancer, accounting for about 80 % of nonmelanoma skin cancers. It arises from basal cells in the ...

Bardet–Biedl syndrome (BBS) is a rare, inherited disorder that affects many parts of the body. It belongs to a group of conditions called ciliopathies, in ...

Balint syndrome is a rare neurological disorder marked by profound impairments in visual perception, spatial cognition, and hand–eye coordination. Individuals ...

Bacterial keratitis is an infection of the clear front window of the eye, called the cornea. It happens when harmful bacteria invade the corneal layers, ...