loading...| Preferred Name |
Refractive Errors |
| Definitions |
<p>The cornea and lens of your eye helps you focus. Refractive errors are vision problems that happen when the shape of the eye keeps you from focusing well. The cause could be the length of the eyeball (longer or shorter), changes in the shape of the cornea, or aging of the lens.</p> <p>Four common refractive errors are:</p><ul> <li>Myopia, or nearsightedness - clear vision close up but blurry in the distance</li> <li>Hyperopia, or farsightedness - clear vision in the distance but blurry close up</li> <li>Presbyopia - inability to focus close up as a result of aging</li> <li>Astigmatism - focus problems caused by the cornea</li> </ul> <p>The most common symptom is blurred vision. Other symptoms may include double vision, haziness, glare or halos around bright lights, squinting, headaches, or eye strain.</p> <p>Glasses or contact lenses can usually correct refractive errors. Laser eye surgery may also be a possibility.</p> <p class="">NIH: National Eye Institute</p> |
| ID |
http://purl.bioontology.org/ontology/MEDLINEPLUS/C0034951 |
| cui |
C0034951 |
| Date created |
11/17/1999 |
| definition |
The cornea and lens of your eye helps you focus. Refractive errors are vision problems that happen when the shape of the eye keeps you from focusing well. The cause could be the length of the eyeball (longer or shorter), changes in the shape of the cornea, or aging of the lens. Four common refractive errors are:
The most common symptom is blurred vision. Other symptoms may include double vision, haziness, glare or halos around bright lights, squinting, headaches, or eye strain. Glasses or contact lenses can usually correct refractive errors. Laser eye surgery may also be a possibility. NIH: National Eye Institute |
| Inverse of RQ |
http://purl.bioontology.org/ontology/MEDLINEPLUS/C0023319 http://purl.bioontology.org/ontology/MEDLINEPLUS/C0336564 http://purl.bioontology.org/ontology/MEDLINEPLUS/C0027092 http://purl.bioontology.org/ontology/MEDLINEPLUS/C0004106 |
| Inverse of SY | |
| Mapped from | |
| Mapped to | |
| MP OTHER LANGUAGE URL |
Spanish https://medlineplus.gov/spanish/refractiveerrors.html |
| MP PRIMARY INSTITUTE URL |
National Eye Institute https://nei.nih.gov/ |
| notation |
C0034951 |
| prefLabel |
Refractive Errors |
| Related to |
http://purl.bioontology.org/ontology/MEDLINEPLUS/C0395416 http://purl.bioontology.org/ontology/MEDLINEPLUS/C0010034 http://purl.bioontology.org/ontology/MEDLINEPLUS/C1456528 |
| Scope Statement |
Are you nearsighted, farsighted, or have astigmatism? That's a refractive error, caused by an irregular-shaped cornea or lens. Learn how it's treated.https://medlineplus.gov/refractiveerrors.html |
| tui |
T047 |
| subClassOf |