Biology Topic Practice

Eye Structure & Defects

The eye is a sense organ containing receptors sensitive to light intensity and colour.

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What is Eye Structure & Defects?

"The eye is a sense organ containing light-sensitive receptors that allow the body to detect light intensity and colour for vision."

Question 1

Which lens is used to correct myopia (short-sightedness)?

Question 2

What is the function of the retina in the eye?

Question 3

Which defect is corrected using a convex lens?

Vision and Correction

Accommodation is the process of changing the shape of the lens to focus on near or distant objects.

Myopia (short-sightedness) and Hyperopia (long-sightedness) are common defects corrected with lenses.

Exam Tip

To focus on a near object, the ciliary muscles contract and the suspensory ligaments loosen, making the lens thicker.

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