People who wear contact lenses or glasses have a defect in the:

Question

Quizplus · Accepted Answer

People who wear contact lenses or glasses typically have a refractive error, meaning their eyeball is either too long or too short, causing the light to be focused incorrectly on the retina. This is corrected by the use of corrective lenses to adjust the focal point of the light onto the retina. The other options given (rod cells, cone cells, iris, blind spot) are not usually associated with the need for corrective lenses.

People Who Wear Contact Lenses or Glasses Have a Defect