Cannabis has been shown to lower intraocular pressure and help with the symptoms associated with glaucoma. The pressure needs to be kept down all the time. Treatment with edibles and tinctures provide long acting relief and would be prefered to smoking numerous times per day. I would try a CBD rich whole plant cannabis extract in a tincture format, three or four times a day. Eye drops (canasol) are available in Jamaica, but cannot be sent to the US.