ICD-11 definition : Yellow OCA is a variant of OCA-1B where patients are born with no pigment and associated
severe visual problems,but develop some pigmentation, principally yellow-red phaeomelanin,
from early childhood. This form is primarily reported in the Amish population of North
America.;
Yellow OCA is a variant of OCA-1B where patients are born with no pigment and associated
severe visual problems,but develop some pigmentation, principally yellow-red phaeomelanin,
from early childhood. This form is primarily reported in the Amish population of North
America.