Heterophoria

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Heterophoria Classification and external resources
ICD-10	H50.5
ICD-9	378.40

Heterophoria is a type of eye condition where the motion of the eyes are not parallel to each other. This however,only occurs during dissociation of the left eye and right eye, whereby fusion of the eyes is absent. Heterophoria is usually asymptomatic. This is when it is compensated by fusional vergence. In severe cases, when the heterophoria is not overcome by fusional vergence, sign and symptoms appear. This is called decompensated heterophoria. Heterophoria may lead to squint or also known as strabismus.

[edit] External links

• Animation at mrcophth.com
• Heterophoria at eMedicine Dictionary
• http://www.cochraneeyes.org/glossary.htm#H

v • d • e Eye disease - pathology of the eye (primarily H00-H59, 360-379) Eyelid, lacrimal system and orbit eyelid: inflammation (Stye, Chalazion, Blepharitis) - Entropion - Ectropion - Lagophthalmos - Blepharochalasis - Ptosis - Blepharophimosis - Xanthelasma - Trichiasis lacrimal system: Dacryoadenitis - Epiphora - Dacryocystitis orbit: Exophthalmos - Enophthalmos Conjunctiva Conjunctivitis - Pterygium - Pinguecula - Subconjunctival hemorrhage Sclera and cornea Scleritis - Keratitis - Corneal ulcer - Snow blindness - Thygeson's superficial punctate keratopathy - Fuchs' dystrophy - Keratoconus - Keratoconjunctivitis sicca - Arc eye - Keratoconjunctivitis - Corneal neovascularization - Kayser-Fleischer ring - Arcus senilis - Band keratopathy Iris and ciliary body Iritis - Uveitis - Iridocyclitis - Hyphema - Persistent pupillary membrane - Iridodialysis - Synechia Lens Cataract - Aphakia - Ectopia lentis Choroid and retina Birdshot chorioretinopathy - Retinitis - Chorioretinitis - Choroideremia - Retinal detachment - Retinoschisis - Retinopathy (Bietti's crystalline dystrophy, Coats disease, Diabetic retinopathy, Hypertensive retinopathy, Retinopathy of prematurity) - Macular degeneration - Retinitis pigmentosa - Retinal haemorrhage - Central serous retinopathy - Macular edema - Epiretinal membrane - Macular pucker - Vitelliform macular dystrophy - Leber's congenital amaurosis Optic nerve and visual pathways Optic neuritis - Papilledema - Optic atrophy - Leber's hereditary optic neuropathy - Dominant optic atrophy - Optic disc drusen - Glaucoma - Toxic and nutritional optic neuropathy - Anterior ischemic optic neuropathy Ocular muscles, binocular movement, accommodation and refraction Paralytic strabismus: Ophthalmoparesis - Progressive external ophthalmoplegia - Palsy (III, IV, VI) - Kearns-Sayre syndrome Other strabismus: Esotropia/Exotropia - Hypertropia - Heterophoria (Esophoria, Exophoria) - Brown's syndrome - Duane syndrome Other binocular: Conjugate gaze palsy - Convergence insufficiency - Internuclear ophthalmoplegia - One and a half syndrome Refractive error: Hyperopia/Myopia - Astigmatism - Anisometropia/Aniseikonia - Presbyopia Visual disturbances and blindness Amblyopia - Leber's congenital amaurosis - Subjective (Asthenopia, Hemeralopia, Photophobia, Scintillating scotoma) - Diplopia - Scotoma - Anopsia (Binasal hemianopsia, Bitemporal hemianopsia, Homonymous hemianopsia, Quadrantanopia) - Color blindness (Achromatopsia) - Nyctalopia (Oguchi disease) - Blindness/Low vision Pupil Anisocoria - Argyll Robertson pupil - Marcus Gunn pupil/Marcus Gunn phenomenon - Adie syndrome Infectious diseases Trachoma - Onchocerciasis Other Nystagmus - Miosis - Mydriasis - Glaucoma - Ocular hypertension - Floater - Leber's hereditary optic neuropathy - Red eye - Keratomycosis - Xerophthalmia - Aniridia See also congenital