[Richard] and [Anton] needed a big, unblinking eyeball that could look in any direction and their solution even provides an adjustable pupil and iris size. Making the pupil dilate or contract on ...

While you might think that it all comes down to colour, the researchers found that two other factors are key - pupil size, and iris brightness ... demonstrate that small changes in perceived ...

Moderate form with mid dilated pupil preoperatively and mild tendency of the iris to prolapse through ocular incisions; Severe form where patients have small pupils that resist dilatation and ...