Focusing the Eye Flashcards

How to Use These Flashcards Effectively

1️⃣ Familiarise yourself with the flashcards:

Look through all the flashcards to see what’s on both sides.
Make sure you understand the information on each card. If something’s unclear, click the link to the revision notes at the bottom of the page for more details.

2️⃣ Test yourself:

Look at the question or prompt on each card and try to remember the answer before flipping it over.
Check the answer and make a note of any cards you find challenging and need to go over more.

3️⃣ Consistently Review and Practice:

Use spaced repetition: spend more time on the cards you struggle with and go over them more often.
Regularly review all the flashcards to help you better understand and retain the information over time.

Note: We may include questions that have multiple correct answers. It’s useful to remember specific examples to understand these concepts better.

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What is pupil reflex?

Pupil reflex is a reflex action carried out by the iris to control the amount of light entering the eye, protecting the retina from damage.

How does the pupil respond in bright light?

In bright light, circular muscles contract and radial muscles relax, making the pupil smaller and allowing less light into the eye.

How does the pupil respond in dim light?

In dim light, radial muscles contract and circular muscles relax, making the pupil larger and allowing more light into the eye.

What happens to the eye when focusing on near objects?

To focus on near objects, the ciliary muscles contract, suspensory ligaments loosen, and the lens becomes larger and more spherical, refracting light more strongly onto the retina.

What happens to the eye when focusing on distant objects?

To focus on distant objects, the ciliary muscles relax, suspensory ligaments tighten, and the lens becomes thinner and flatter, refracting light slightly onto the retina.

How do the radial and circular muscles in the iris affect the size of the pupil?

In bright light, circular muscles contract and radial muscles relax, making the pupil smaller.

In dim light, radial muscles contract and circular muscles relax, making the pupil larger.

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