| 摘要 |
<p>A soft contact lens having a spherical back surface. The back surface conforms to the curvature of the eye in its hydrated state. In the dehydrated state is has an aspheric front surface, the asphericity of which is a function (n)f [sin(a)], wherein (a) is the polar angle and (n) is the offset factor of a controlling circular surface, that has a radius r.</p> |
