A:
2 Answers
rank
1
|
The following are the most common refractive errors, all of which affect vision and may require corrective lenses or surgery for correction or improvement: • astigmatism Astigmatism is a condition in which an abnormal curvature of the cornea can cause two focal points to fall in two different locations - making objects up close and at a distance appear blurry. Astigmatisms may cause eye strain and may be combined with nearsightedness or farsightedness. Eyeglasses, contact lenses, or corrective surgery may help to correct or improve the condition.
more
|
rwjuh.edu
Related Videos
rank
2
|
The eye functions like a camera. Light rays entering the eye are focused by the cornea and the lens of the eye onto the light sensitive retina (which is like the film of a camera) at the back of the eye. The retina then transmits a clear image, or photo, to the brain. In people with refractive errors (or poor vision, such as nearsightedness or farsightedness), the light rays do not get focused on to the retina and blurred images are formed. These can be measured as aberration patterns.
more
|
kuwaiticlinic.com
Add your answer...
Top Answerers
1.
2.
3.
Top Askers
1.
2.
3.
Top Supporters
1.
2.
3.
What are refractive errors?
Related Questions
- Intracorneal rings, or Intacs, is a micro-thin intracorneal ring that is implanted into the cornea. Intacs ...
- Automated lamellar keratoplasty, or ALK, is a surgical procedure that is mainly used for hyperopia ( ...
- The answer must not be ideal, excellent, or anything of the like. Although correction at these levels can be ...
- A. In the hands of a good surgeon the results are impressive. However, a patient must be an appropriate ...
- Patients with myopia, or nearsightedness, have steep curvature in one or both corneas; they can focus on ...