2. There are many types of albinism and not all people with albinism manifest the same symptoms. Historically, two main types of albinism have been defined, called oculocutaneous albinism (OCA) and ocular albinism (OA), depending on whether the decrease or absence of pigment affects the skin, hair and eyes (OCA) or mainly the eyes (OA). In turn, each of these two types can be subdivided into several, depending on which gene is affected.
