Contraction and dilation of the pupil; movement of the eyes and changes in the shape of the lens is called

Contraction and dilation of the pupil; movement of the eyes and changes in the shape of the lens is called

• A. Accommodation
• B. Emmetropia
• C. Retina
• D. Choroid

Answer: (A)

The situation described is the eye’s near response, a coordinated set of actions that lets you focus on close objects. When you look at something near, the pupil typically constricts, the eyes converge to maintain single vision, and the lens changes shape to become thicker, increasing its optical power. The key change among these is the lens shape adjustment, driven by the ciliary muscles, which is called accommodation. Accommodation is the best fit because it directly refers to the lens becoming rounder to focus on near objects, while the pupil change and eye movements are part of the same near-reflex package that accompanies focusing. The other terms don’t describe this focusing adjustment: emmetropia means normal vision without refractive error, and retina and choroid are parts of the eye, not the focusing or near-reflex process.

The situation described is the eye’s near response, a coordinated set of actions that lets you focus on close objects. When you look at something near, the pupil typically constricts, the eyes converge to maintain single vision, and the lens changes shape to become thicker, increasing its optical power. The key change among these is the lens shape adjustment, driven by the ciliary muscles, which is called accommodation.

Accommodation is the best fit because it directly refers to the lens becoming rounder to focus on near objects, while the pupil change and eye movements are part of the same near-reflex package that accompanies focusing. The other terms don’t describe this focusing adjustment: emmetropia means normal vision without refractive error, and retina and choroid are parts of the eye, not the focusing or near-reflex process.