Vision Needs
Near-Sighted
A nearsighted eye sees near objects within a certain range very
clearly while distance vision appears blurry at all times. An estimated
70 million people in the U.S suffer from this condition. Most often
caused when the eyeball is too long for the focusing power of the lens
and cornea, nearsightedness creates an overpowered eye which causes
images to reach true focus in front of the retina. Correction requires
a "minus" lens to "weaken" the eye optically to permit clear distance
vision.
How a spherical contact lens corrects nearsightedness?
 
The shape of a nearsighted eye focuses images in front of the retina,
producing a blurred distance vision. By reducing the cornea's focusing
power, a spherical contact lens creates a single focal point on the
retina where vision is sharpest.
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