Post History
This is an addition to Willk's answer; Giant pupils would be a very good start, with the addition that the iris would have to be able to get the pupil small enough to allow function in the dayligh...
Answer
This is an addition to Willk's answer; Giant pupils would be a very good start, with the addition that the iris would have to be able to get the pupil small enough to allow function in the dayligh...