To perform a full scan and evaluate each particular case, we conduct some dilated pupil tests. This is done by applying some dilating drops, the effect lasts about an hour. During this time, you cannot drive. It is important to keep this in mind so you can come accompanied or use public transport. The tests on the first day can be carried out without dilating the pupils, but if you do decide to have the operation, you will need to come back for the pupil dilation before the surgery.