Converse of object

• correct: Q: What is a toric lens A: A special type of soft contact lens called a toric lens which will correct astigmatism.

• have: I have astigmatism - can I wear soft lenses?

• cause: The smaller the wound, the less likely the chances of causing astigmatism.

• reduce: It may then be necessary to adjust or remove sutures to reduce the astigmatism.

• induce: Surgical complications, visual acuity at discharge, 6 weeks, and 1 year follow up, and surgically induced astigmatism are reported.

Adjective modifier

• myopic: Refractive correction for compound myopic astigmatism contained the following parameters.

• significant: The other possible reason is that there may be significant astigmatism.

• compound: Refractive correction for compound myopic astigmatism contained the following parameters.

• mild: Mild astigmatism may not require treatment unless you are constantly putting demands on the eyes through looking at a computer screen or driving.

• severe: Some people may not have clear vision wearing soft contact lenses due to certain eye conditions such as severe astigmatism.

• lenticular: Corneal astigmatism is when the cornea is a distorted shape and lenticular astigmatism occurs when the lens is distorted.

Modifies a noun

• correction: The treatment costs £ 995 per eye, plus an extra £ 300 per eye for astigmatism correction above 2d.

• problem: Astigmatism problem resolved 1500 GMT 07 March 2006 The astigmatism problem that became apparent in LT images late last year has been resolved.

Preposition: in

• system: The animation allows the user to select from a number of fluorescence photomicrographs and vary the amount of astigmatism in the optical system.