Lidocaine Usage for Pupil Dilatation (Mydriasis)

Former studied done on the effect of Intracameral lidocaine 1% compared to topical mydriatic agents for achieving effective mydriasis during phacoemulsification surgery have compared 2 different groups of patients, ie; One group received topical agents and the other received intracameral lidocaine. The resultant pupil size was recorded and evaluated in the 2 groups. Our purpose is to compare the effect of these agents on the same group of people.

Patients recruited will be invited first for evaluation at least 1 week before the surgery. During this evaluation 1 dose (drop) of topical cyclopentolate 1% and Phenylephrine 10% will be instilled to the evaluated eye 3 times at 10 minutes intervals. After 1 hour from the last instillation pupil diameter will be recorded. In the second part of this study during the phacoemulsification surgery patients will be given intracamerally lidocaine 1% (0.2 ml) and the pupil size will be recorded after 90 seconds. the resultant values will be evaluated/compared.

Inclusion criteria

• cataract
• men and women
• can read and sign informed consent form

Exclusion criteria

• sensitivity to Lidocaine
• sensitivity to Ephrine
• any other ocular surgeries
• diseases like Adie's pupil, Horner syndrome