What makes a person nearsighted or farsighted




















This layer is called the retina. When light enters the eye and does not focus properly on the retina, it causes blurry vision. The difference between farsightedness and nearsightedness is simply a matter of where this light focuses inside the eye. In a nearsighted eye, light focuses too far in front of the retina, instead of directly on it.

This usually happens because the shape of the eyeball is too long from front to back, but it can also be caused by the shape of the cornea. When light focuses in front of the retina, distant objects look blurry, but those nearby appear in focus. The medical term for nearsightedness is myopia. Farsightedness — known as hyperopia — is the opposite of nearsightedness. Farsighted vision is usually caused by an eyeball that's too short, causing light to focus behind the retina. Email Address. First Name.

Last Name. Tell us more about you My child has myopia I have myopia I am an eye care professional I am an education professional. These eye conditions are caused by refractive errors. Refractive errors occur when the shape of your eye keeps light from focusing correctly on your retina a light-sensitive layer of tissue in the back of your eye.

Myopia, or nearsightedness, is a condition where things that are far are harder to see. In other words, distant objects appear blurry until they are brought close to the eyes.

In the U. Your eye doctor will likely recommend corrective eyewear to mend your vision. All it takes is a comprehensive eye exam with some painless, straightforward eye tests. To find out more about what happens during an eye exam, click here.

Hyperopia and myopia are common refractive errors that sometimes occur in combination with astigmatism. While you may feel that these issues are challenging to manage on occasion, prescription lenses are often all you need to correct them.

Education is also vital. Here are some major differences between farsightedness vs. Whichever of these two refractive errors you have or any others , our eye care team is at your service. Have you had your annual comprehensive eye exam? Book an Exam. I also agree to the Privacy Policy. Facebook Twitter LinkedIn. Recent Posts Why do you see starbursts around lights after cataract surgery? How do I fix eye vision? I have myopia, I'm What age of a person has particularly good night vision?



0コメント

  • 1000 / 1000