ABO NOCE Practice Test 2026 - Free Optician Certification Practice Questions and Study Guide

Myopia, commonly known as nearsightedness, is a visual condition where distant objects appear blurry while close objects can be seen clearly. This occurs when the eye is either too long or the cornea has too much curvature, causing light rays to focus in front of the retina rather than directly on it.

The use of minus lenses, which are concave in shape, corrects myopia by diverging the light rays before they enter the eye. This adjustment allows the focal point of the incoming light to move back onto the retina, enabling clearer vision of distant objects. Therefore, individuals with myopia require minus lenses to bring their vision into proper focus.

In contrast, presbyopia, emmetropia, and hyperopia involve different visual issues that do not necessitate the use of minus lenses. Presbyopia is an age-related condition affecting the ability to focus on close objects, while emmetropia refers to normal vision without corrective lenses, and hyperopia, or farsightedness, involves difficulty in seeing nearby objects, requiring plus lenses instead.