Correction of Nearsightedness, Farsightedness, and Astigmatism - KFDA - NewsChannel 10 / Amarillo News, Weather, Sports

Correction of Nearsightedness, Farsightedness, and Astigmatism

Patients with nearsightedness have corneas that are too steep for the length of their eye. The excimer laser is used to flatten the cornea so that the light rays that pass through it come to a point of focus on the retina, rather than in front of it.

Patients with farsightedness have corneas that are too flat for the length of their eye. The excimer laser is used to steepen the cornea so that the light rays are focused on the retina, rather than behind it.

In astigmatism, the cornea is elliptical (or football shaped) rather than being round. In this case, the laser reshapes the front surface of the cornea into a rounder shape, again improving the eye's focus.

(c) 2001 Healthology, Inc.

  • Health WatchMore>>

  • Ebola health workers battle death, heat, rumors

    Ebola health workers battle death, heat, rumors

    Wednesday, August 20 2014 1:24 PM EDT2014-08-20 17:24:28 GMT
    Doctors and nurses fighting Ebola in West Africa are working 14-hour days, seven days a week, wearing head-to-toe gear in the heat of muddy clinics. Agonizing death is the norm. The hellish conditions aren't...
    Doctors and nurses fighting Ebola in West Africa are working 14-hour days, seven days a week, wearing head-to-toe gear in the heat of muddy clinics. Agonizing death is the norm. The hellish conditions aren't the only...
  • ALS Ice Bucket Challenge continues to gain attention

    ALS Ice Bucket Challenge continues to gain attention

    Amarillo, TX - The ALS Association says August is one of the lowest fundraising months for their non-profit, but thanks to the Ice Bucket Challenge, donations are up.
    Amarillo, TX - The ALS Association says August is one of the lowest fundraising months for their non-profit, but thanks to the Ice Bucket Challenge, donations are up.
  • Avastin approved for late-stage cervical cancer

    Avastin approved for late-stage cervical cancer

    The anti-cancer drug Avastin (bevacizumab) has been newly approved to treat aggressive and late-stage cervical cancer, the U.S. Food and Drug Administration said in a news release.
    The anti-cancer drug Avastin (bevacizumab) has been newly approved to treat aggressive and late-stage cervical cancer, the U.S. Food and Drug Administration said in a news release.