Contact lens use in the treatment of an ophthalmologic condition

A method of fitting a contact lens for an eye of a subject, comprising:

• measuring a radius of curvature at the flattest corneal meridian of the eye;
• and
• selecting a contact lens having an optic zone with a curvature that varies from a curvature at the flattest corneal meridian of the eye by between 2.0 and 6.0 diopters and such that, when the contact lens is fit on to the eye, a fluid volume between the cornea of the eye and the contact lens is maintained between 0.05 cubic mm and 0.3 cubic mm.

A method of using a contact lens, comprising:

• selecting a contact lens and placing the contact lens on a cornea of an eye such that, when the selected contact lens is fit on to the eye, a fluid volume between the cornea of the eye and the contact lens is maintained between 0.05 cubic mm and 0.3 cubic mm, the contact lens comprising:
• an optic zone having an optic zone diameter of between 7.0 mm and 9.0 mm and a radius of curvature of between 7.0 mm and 10.0 mm, wherein the optic zone of the contact lens has a radius of curvature equal to a sagittal depth of the cornea of the eye plus a distance of between 0.05 mm and 0.25 mm, and
• an inner peripheral region surrounding the optic zone, wherein inner peripheral region has a radius of curvature of between 0.5 mm and 1.5 mm greater than a radius of curvature of the optic zone.