The patient may restart daily activities immediately. Eye resistance to trauma is the same as it was before surgery. Just as any other surgical procedure, phacoemulsification has risks. One out of a hundred persons operated on with this technique has some sort of complication. In almost every case there is a solution to the problem.
Severe complications are extremely rare.
No special preparation is needed for phacoemulsifiaction. Your ophthalmologist should make sure there are no associated pathologies, which can interfere with the prognosis, by making an extensive examination of your eyes including pupil dilation. A measurement of your eye's length and corneal curvature is crucial for calculating the power of the intraocular lens to be implanted. During surgery you will be lying on the operating bed. The operating microscope will be in front of you and you will always see the microscope's bright light.