Visual Defect in Oculocutaneous Albinism is Not Associated with Gross Structural Anomaly
نویسندگان
چکیده
منابع مشابه
Oculocutaneous albinism
Oculocutaneous albinism (OCA) is a group of inherited disorders of melanin biosynthesis characterized by a generalized reduction in pigmentation of hair, skin and eyes. The prevalence of all forms of albinism varies considerably worldwide and has been estimated at approximately 1/17,000, suggesting that about 1 in 70 people carry a gene for OCA. The clinical spectrum of OCA ranges, with OCA1A b...
متن کاملVisual deficits in Nepalese patients with oculocutaneous albinism.
BACKGROUND Albinism poses a significant threat to visual functions and causes remarkable ocular morbidity often resulting in visual disabilities. The study aimed at describing the visual status in patients with diagnosed cases of complete oculocutaneous albinism (OCA) attending to a tertiary eye hospital in Nepal. METHODS This was a cross-sectional descriptive hospital-based study of all diag...
متن کاملTemperature-sensitive tyrosinase associated with peripheral pigmentation in oculocutaneous albinism.
Several types of autosomal recessive oculocutaneous albinism (OCA) are associated with abnormal tyrosinase function and a generalized reduction in or absence of cutaneous and eye melanin. Each is thought to result from a different mutant allele at the tyrosinase locus, with the mutation producing an enzyme with little or no activity in all involved tissues. In this paper, we report a new type o...
متن کاملP gene mutations associated with oculocutaneous albinism type II (OCA2).
Oculocutaneous albinism type II (OCA2) is the most common form of albinism in humans. OCA2 has been previously associated with mutations of the P gene, the human homologue to the murine pink-eyed dilution gene. The P gene encodes a 110 kDa protein containing 12 potential membrane spanning domains and is associated with melanosomal membranes. The specific function of the P protein is currently u...
متن کاملOculocutaneous albinism type 2
Oculocutaneous albinism represents a group of inherited skin disorders characterized by a generalized reduction of cutaneous, ocular, and pilar pigmentation from the time of birth. Oculocutaneous albinism types I and II are the most common, with several other types described. A defect in the melanin synthesis pathway, resulting in reduced formation of melanin, is responsible for oculocutaneous ...
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ژورنال
عنوان ژورنال: Journal of Clinical & Experimental Dermatology Research
سال: 2014
ISSN: 2155-9554
DOI: 10.4172/2155-9554.1000228