BIO Contact Lenses. Contact lenses are placed right on the eyeball, so the distance from the eye to an object (or ) is the same as the distance from the lens to that object (or ). A certain person can see distant objects well, but his near point is 45.0 cm from his eyes instead of the usual 25.0 cm. (a) Is this person nearsighted or farsighted?

Question

Accepted Answer

Hi everyone. In this practice problem, we're being asked to identify an ocular refractive error caused by a vision trouble. Where in this particular example, we have the ability to see the distance object clearly. While the minimum distance on which your eye can focus is centimeter instead of 25 centimeter for a normal, we're being asked to identify this subspeciate ocular refractive errors causing your attrition trouble. And the options given are a near CY B for sightedness, C press biop and D astigmatism. So for this particular practice problem, we want to notice that uh the condition that is experienced here is causing where we can only see distant objects clearly but objects nearby will appear very blurry. And because of that, this um specific ocular refractive error will be called called farsightedness. Or people will usually also call this hyperopia. So far far sightedness or hyperopia is a very common vision condition in which you can see distant objects clearly but objects nearby will appear blurry. So in this case, farsightedness will be the answer to this particular practice problem which will correspond to option B in our answer choices. So option B will be the answer to this particular practice problem and that will be it for this video. If you guys still have any sort of confusion, please make sure to check out our other lesson videos on our website. But other than that, that will be it for this one. Thank you.

Verified Solution

Key Concepts

Nearsightedness and Farsightedness

Near Point

Optical Correction with Lenses