The term for normal vision is:

The term for normal vision is:

• A. Emmetropia
• B. Hyperopia
• C. Myopia
• D. Astigmatism

Answer: (A)

Normal vision happens when the eye is in emmetropia—that is, light from distant objects is focused exactly on the retina with the eye relaxed. In this state there’s no refractive error, so vision is sharp without corrective lenses for distance. The other terms describe common refractive problems: hyperopia means farsightedness, where light focuses behind the retina; myopia means nearsightedness, where light focuses in front of the retina; and astigmatism involves an irregular curvature that creates multiple focal points and blurred vision. Emmetropia, then, is the term used for normal vision.

Normal vision happens when the eye is in emmetropia—that is, light from distant objects is focused exactly on the retina with the eye relaxed. In this state there’s no refractive error, so vision is sharp without corrective lenses for distance. The other terms describe common refractive problems: hyperopia means farsightedness, where light focuses behind the retina; myopia means nearsightedness, where light focuses in front of the retina; and astigmatism involves an irregular curvature that creates multiple focal points and blurred vision. Emmetropia, then, is the term used for normal vision.