Both the preliminary examination and operation can be performed in connection with the same visit. In this case, do reserve at least three hours. Generally speaking, it’s worthwhile to have both eyes treated at the same time.
Sick-leave may be needed on a case-by-case in accordance with the sort of job you have. It’s a good idea to discuss sick leave with your employer in advance. As the operation does not concern the treatment of an illness, the employer may decide on whether or not a salary will be paid during the period.