Summary   Summary
Featured Diseases & Conditions
Health Awareness Articles
Symptom Checker

Symptom Checker
Just click on a body part, choose your symptom and search through a world of health information.


Search Diseases

Search Disease

Microphthalmia and Anophthalmia

Overview :

Anophthalmia is caused by a defect in embryonic development. The total absence of an eye is extremely rare and often a clinical sign associated with a broad range of genetic disorders or, more commonly, a sporadic mutation. Sporadic transmission occurs in the affected individual due to a genetic abnormality. It is not passed on from the parents, but usually due to a combination of environmental and genetic influences. More commonly anophthalmia clinically presents as a small cyst. The defect, which causes anophthalmia, is an absence of the optic vesicle, a structure important for eye development. The genetic abnormality usually occurs during weeks one to three after conception. It is estimated that the incidence of microphthalmia occurs 0.22 times per 1,000 live births. Anophthalmia can occur during adult life but not associated with a genetic cause.

Microphthalmia refers to an abnormally small eye. This clinical sign is often associated with autosomal dominant or recessively transmitted genetic disorders. Most disorders dominantly inherited with microphthalmia are associated with some visual capabilities in infancy and early childhood. Microphthalmia may be isolated (the only presenting sign) or associated with a range of ocular or systemic abnormalities. Isolated cases of microphthalmia may be sporadic or inherited. There is a variable degree of visual impairment. Microphthalmia occurs due to autosomal recessive transmission and is part of a syndrome associated with abnormalities in the retina or systemic lesions. Microphthalmia results from a developmental defect after formation of the optic vesicle. The developmental abnormality causes the optic vesicle to fold inwards, resulting in the formation of a cyst. The cyst will progressively swell from birth, and it may be situated along the optic nerve. The cyst may also be situated along other important eye structures.

 Image Gallary
Search for information related to Health and wellness
Health Centers
Cardiology and HeartMen's HealthWomen's HealthMother + ChildDiabetesStressInfectious DiseaseSkinEyeCancerStop SmokingWeight ManagementSexual HealthBlood Pressure ManagementAsthmaPregnancy and Child BirthAllergyHair LossDengueCold and FluSore ThroatADHDDental & Oral HealthHigh CholesterolDepressionPolioBreast CancerFood PoisonSnoringConjunctivitisCervical CancerJaundiceGeneral HealthMigraine / HeadacheThyroidBlood SugarProstate CancerKidney DiseaseAnxietyArthritisAutismBipolar DisorderCOPDCaregivingCrohn's DiseaseEpilepsyErectile DysfunctionHealthy AgingIncontinenceMeningitisMenopauseMultiple SclerosisOsteoporosisPain ManagementParkinson's DiseaseRelationshipsSleep ManagementStomach & DigestiveOsteoarthritisPertussisOveractive BladderRheumatoid ArthritisTonsils
Search for information related to Health and wellness
Health Pages
blood pressure cancer cholesterol test diabetes diets erectile dysfunction hair loss health health articles healthy living heart diseases high cholesterol pregnancy reduce weight vagina weight wellness health plan sexual problems lower cholesterol heart attack women health asthma weight loss anxiety back problems disease symptoms immunization for children indian home remedies indian recipes Manage weight pathology tests stress breast cancer quilt male enhancement herb clinics for abortion pediatric heart disease abortion doctors student health breast cancer clinical trials wisdom teeth infection what does breast cancer feel like pregnancy uterus pregnancy gas calorie counter high blood pressure during pregnancy health insurance for unemployed human swine flu