U7L2 - Pre Flashcard - Physiology of the Eye

Front

What is the focal point in the context of the eye?

Back

The focal point is the point where all horizontal light rays that enter the eye converge.

Front

What happens to the circular muscles of the iris when bright light shines in the eye?

Back

The circular muscles of the iris contract, reducing the size of the pupil to limit the amount of light entering.

Front

What is presbyopia and what causes it?

Back

Presbyopia is a condition characterized by the loss of elasticity of the lens, making it difficult to focus on close objects.

Front

What is the proper term for nearsightedness?

Back

Nearsightedness is more properly called myopia.

Front

What is the correct order of the pathway of light through the eye?

Back

The correct order is: cornea, aqueous humor, through pupil, lens, vitreous humor, retina.

Front

What role does the lens play in the eye?

Back

The lens focuses light onto the retina, allowing for clear vision.

Front

What is the function of the cornea?

Back

The cornea is the transparent front part of the eye that refracts light and helps focus it.

Front

What is the vitreous humor?

Back

The vitreous humor is the clear gel that fills the space between the lens and the retina, helping maintain the eye's shape.

Front

What is the difference between myopia and hyperopia?

Back

Myopia (nearsightedness) is when distant objects appear blurry, while hyperopia (farsightedness) is when close objects appear blurry.

Front

What is the role of the ciliary muscles in the eye?

Back

Ciliary muscles adjust the shape of the lens to focus on objects at different distances.