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DefinitionAnomalous trichromacy is a condition that affects how a person perceives colors. Unlike normal color vision, where three types of cone cells in the eyes work...
DefinitionAnophthalmia is a rare congenital condition characterized by the complete absence of one or both eyes (the globe) and all associated ocular tissues within the eye...
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DefinitionAnterior Capsular Contraction Syndrome (ACCS) is a postoperative complication of cataract surgery characterized by the progressive constriction and fibrotic shrinkage of the anterior capsulotomy (the circular...
DefinitionAnterior chamber cleavage disorder (anterior segment dysgenesis, ASD) is a group of birth conditions where the front part of the eye (the cornea, iris, lens, and...
DefinitionAn Anterior Chamber Intraocular Lens (AC IOL) is a specialized artificial lens designed to replace the eye’s natural lens when it cannot be safely placed in...
DefinitionUveitis is inflammation of the uveal tract—the iris, ciliary body, and choroid—of the eye. When this inflammation becomes severe or causes complications such as high intraocular...
DefinitionAnterior Chamber-Associated Immune Deviation (ACAID) is an active, antigen-specific form of immune tolerance induced when an antigen is introduced into the anterior chamber of the eye....
DefinitionArteritic Anterior Ischemic Optic Neuropathy (AAION) is a sudden and often painful loss of vision that arises when inflammation of medium-sized arteries—most commonly in giant cell...
DefinitionAnterior ischemic optic neuropathy (AION) is a sudden drop in vision caused by reduced blood flow to the front part of the optic nerve (the “cable”...
DefinitionAnterior segment developmental anomalies (ASDAs), also known as anterior segment dysgenesis (ASD), comprise a spectrum of congenital disorders in which one or more of the front...
DefinitionAnterior segment dysgenesis is an umbrella term for a group of eye conditions that happen when the front part of the eye does not form normally...
