Do blue-eyed people have more sensitive corneas than brown-eyed people?
D000328:Adult; D002940:Circadian Rhythm; D003116:Color; D003261:Contact Lenses; D003315:Cornea / Q000502:physiology*; D004056:Differential Threshold; D005006:Ethnicity; D006801:Humans; D007498:Iris; D010812:Physical Stimulation; D014110:Touch; D006113:United Kingdom