Objective: To measure steady-state concentrations of betax-olol (BTX) in ocular tissues from patients requiring enucleation for glaucoma-related ocular pain and blindness. BTX has potential for enhancement of retinal blood flow and neuroprotection through BTX calcium channel blocking activity. Methods: Seven Objective: To measure steady-state concentrations of betax-olol (BTX) in ocular tissues from patients requiring enucleation for glaucoma-related ocular pain and blindness. BTX has potential for enhancement of retinal blood flow and neuroprotection through BTX calcium channel blocking activity. Methods Seven: