Comparative study between dexmedetomidine vs. neostigmine as adjuvants to local anesthetic mixture for peribulbar block for vitreoretinal surgeries. - Gomaa Seleem, Hussein Hamdy; Kamel, Gehan Fouad; Wahba, Sherif Samir; El-Gendy, Mohamed Abd-Elsalam; Hafez, Amr Fouad (Anaesthesia, Pain & Intensive Care, 2025)