A boom in operations to change corneal curvature
Useful as they may be, eyeglasses are widely perceived as a mixed blessing, clumsy, detracting from appearance, a sign of age. Contact lenses are not ideal either: often difficult to manage, uncomfortable to wear, easy to lose. Is there any other option? Some ophthalmologists now think there is. They say two common vision problemsnear- and farsightedness (myopia and hyperopia)can be corrected or eased with surgery that reshapes the cornea, the eye's outer covering.
Light enters the eye in parallel rays, which are gradually bent as they pass...
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