The goal of this prospective, randomized, single-blinded is to learn if there is an ideal sedation protocol in cataract surgery in adults.
The main questions it aims to answer are:
* Does the combination of Dexmedetomidine and Propofol affect significantly Ramsay sedation scale, compared to Dexmedetomidine and compared to Propofol?
* How does each sedation protocol affect hemodynamics? (Heart rate and blood pressure)
* Are respiratory events more common in a certain group?
* Is the surgeon's satisfaction similar among groups?
* Are adverse effects (bradycardia, hypotension, nausea) more common in a certain group?
Researchers will compare 3 sedation protocols : Dexmedetomidine versus Propofol versus the combination of these 2 drugs and to see if one protocol is overall superior to the others. Fentanyl will also be used in all 3 sedation protocols.
Participants will :
* Receive one of these three protocols
* Be operated for one or both eyes
* Monitored during the whole surgery and in the recovery room
* Be evaluated by the Ramsay sedation scale by a trained Anesthesiologist or CRNA during surgery and in the recovery room Surgeons will be asked about how much they were satisfied.