What is ocular albinism (OA)? 
Human albinism can be divided broadly into two types, oculocutaneous albinism (OCA) and ocular albinism (OA), where “oculo” means eye and cutaneous means skin. These terms were devised in the late 1940s, when medical science was less sophisticated than it is now. The terminology sounds simple, but in reality is probably incorrect, since all forms of albinism have relative deficiencies of pigment in the hair, skin, and eyes. Historically, ocular albinism is an inherited disorder in which the eyes are deficient in the amount of melanin, which gives the eye its color or pigment, while the skin and hair appear normal or near normal in coloration.