Question

1. a cortical cataract occurs:

at birth
on the edge of the lens nucleus
in the middle of the lens
on the back of the lens

1. what interprets color?

the iris
rods
cones
the lens

Explanation:

Question 116

Cortical cataracts form in the lens cortex (edge of the lens nucleus). Congenital cataracts are at birth, nuclear cataracts in the middle, and posterior subcapsular at the back. So the correct option is the one about the edge of the lens nucleus.

Cones in the retina are photoreceptors that interpret color. Rods detect light/dark, iris controls pupil size, lens focuses light. So cones are responsible for color interpretation.

Answer:

on the edge of the lens nucleus

Question 117