Radial keratotomy

Radial keratotomy

Surgeons improve nearsighted vision by changing the shape of the eyeball.

Nearsighted vision results when an elongated eyeball makes images focus in front of the retina, instead of on the retina surface.

Radial keratotomy corrects the elongation through surgery. Four to eight radial incisions are made in the cornea (left) using a special scalpel. Although experts are not exactly certain how the process works, these incisions cause the cornea to change shape.

The flatter cornea now focuses images directly on the retina.

Incision lines

Text and illustrations by Kevin T. Boyd

Acupressure for eyes
Here is a list of acupressure points for symptoms of the Eye on PointFinder.org.