Ideally, they are in agreement on the amount and axis of the cylinder, but factors such as posterior corneal or lenticular astigmatism may cause disagreement.

Using preoperative corneal topography to guide the approach, the cataract surgeon has several options to treat corneal astigmatism at the time of cataract surgery. By measuring the amount and axis ...

Depth perception is how your eyes produce 3D images. Learn about how your eyesight works to focus and make images appear correctly today.