A secondary precipitant of awareness of variation in eye colour is exposure to individuals whose eye colour is altered by temporary or permanent changes in eye health (cataracts, glaucoma etc), which may or may not affect eye function/vision. As a result, eye colour will often differ to varying extents depending on the light conditions in which it is assessed. Blue eyes in a Nigerian woman with no known familial history of blue eyesIn general, blue eyes are associated with non- Sub-Saharan African origin and pale skin colour. What we know so far suggests that blue eyes in Risikat and her daughters are the result of a DNA mutation inherited from either her father or mother. Because she claims to know of no familial history of blue eyes in her family or locale, it seems likely that the mutation responsible for her blue eyes is novel, this makes her the Index or first case in which the blue-eyed trait was recorded/occurred in the local population.

Source: The North Africa Journal August 21, 2020 06:00 UTC