forty glaucoma patients (high tension priamry open angle form) with OSA, intraocular pressure more than 21 mmHg, and obesity will be involved and divided to group I or group II (number of patients will be twenty in every group) for three month. both groups will apply CPAP during night sleeping daily for three month. group I will apply lifestyle corrections (low calories diet intake and 3-session per-week 40-minute treadmill walking for three month.
