Advantages: Very large distance optical zone, no jump between images, and good distance peripheral vision. Available in toric designs.

Disadvantages:  Must drop quickly

Advantages: large distance optic zone.

Disadvantages: jump between images, must drop quickly.

Advantages: good for desk/computer work, available in toric designs, no jump between images.

Disadvantages: may cause corneal molding, small distance optical zone.

Advantages: no prism, very thin, good near/intermediate vision, available in toric designs.

Disadvantages: must center extremely well, may cause corneal molding.

Advantages: no prism, very thin, good near/intermediate vision, available in toric designs.

Disadvantages: must center extremely well.

Advantages: good choice for post-RK or lasik; available in most toric designs as well as some bifocal designs.

Disadvantages: initial fit should be from trial set for best results

If topography shows a central kone, consider a traditional sopercone or McGuire design. Custom designs are also available.

If topography shows decentration of the kone, please refer to the CarterKone page.