The Effect of Cataract Extraction on the Contractility of Ciliary Muscle

Pilocarpine induced only subtle movement of the ciliary body before cataract surgery. However, after cataract extraction, it induced significant centripetal movement of the ciliary body compared with that without pilocarpine. This shows that a lenticular sclerotic component may influence both lens movement and the contractility of the ciliary muscle, and is believed to be related to the presbyopia.