Patent ID: 7070275

Claim:
An orthokeratology contact lens for a patient's cornea, comprising: an optical zone ( 20 ) having a curvature defined by a base curve ( 30 ); a plateau zone ( 22 ) coupled to said optical zone and extending radially therefrom, said plateau zone having a curvature defined by a plateau curve ( 34 ), said plateau curve being flatter than said base curve ( 30 ); a fitting zone ( 24 ) coupled to said plateau zone and extending radially therefrom, said fitting zone having a curvature defined by a fitting curve ( 36 ), said fitting curve being steeper than said plateau curve; an alignment zone ( 26 ) coupled to said fitting zone and extending radially therefrom, said alignment zone having a curvature defined by an alignment curve ( 38 ), said alignment curve being flatter than said fitting curve; a peripheral zone ( 28 ) coupled to said alignment zone and extending radially therefrom, said peripheral zone having a curvature defined by a peripheral curve ( 42 ), said peripheral zone forming an edge lift to act as tear reservoir.