Which of the following will occur if a corrective lens is placed in front of an eye that is unable to form a clear image of a nearby object?

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11ecba2d_1321_32b8_a3bf_c99aba32d895_MD0008_00 The primary optical components of the eye are the cornea and lens, both of which form a biological converging lens that focuses incoming light rays onto the retina, a structure analogous to the film or sensor within a camera. Refractive errors occur when the eye is unable to focus incoming light rays onto the retina, producing unclear images. Refractive errors are caused by a mismatch between the physical dimensions (eg, length) and optical properties of the eye. For example, hyperopia (ie, farsightedness) is a condition that results when the optical power (S) of the eye is insufficient to refract light rays from nearby objects. A hyperopic eye cannot sufficiently refract light rays that approach the eye at an angle (eg, light rays from nearby objects), producing an image of nearby objects that is sharpest at a location behind the retina. Hyperopia is corrected by placing a converging lens in front of the eye, forming an optical system with greater optical power. Consequently, images of nearby objects shift closer to the lens and onto the retina after a corrective lens is placed in front of the hyperopic eye. (Choice A) Myopia (ie, nearsightedness) describes a visual condition in which the eye forms an image of distant objects at a focal point in front of the retina. Correcting myopia (not hyperopia) shifts the image away from the lens. (Choice C) Spherical aberration refers to the optical deficiencies of lenses with perfectly spherical surfaces. The surfaces of the cornea or lens are not perfectly spherical, so no spherical aberration occurs. (Choice D) Placing a converging lens in front of the eye increases the optical power of the eye, allowing it to properly focus light rays emitted from or reflected off of nearby objects. Educational objective: Hyperopia describes the refractive error that results in an individual being unable to see nearby objects. Hyperopia is caused by the optical power of the eye being insufficient relative to the length of the eye; the condition is corrected by placing a converging lens in front of the eye.

Which of the Following Will Occur If a Corrective Lens