Glaucoma? any experiences or advice? helppppp :(?

my boyfriend gets this thing with his head like if he bends down to fast or picks summat up heavy he gets like a head rush but its not, its like a pressure headache and loses his vision for a few minutes and all that kinda stuff...a freidn said ti could be a glaucoma so he went to the doctors and thay referrerd him to a neurologist for tests adn until then he cant do anythign that raises heart rate or blood pressure incase it makes it worse. Apparently if it is glaucoma it can eventually lead to blindness. he is only 20, no one in his family has it and hes not african or anything apparently they are more prone to it. i dont want him to go blind! any ideas? suggestions or advice? i have researched it on net so i know a bit about it and the differetn kinds but i just want personal experiences or medical advice! help!