Hi my son is 18 years old, he ate a gram of raw marijuana and he's having a bad time, at.the.beginning he told me he felt bad the first two weeks he didnt eat, had trouble sleeping, and felt despersonalized, at the third week after marijuana he felt his eyes kind of heavy and started noticing floaters and visual disturbances... Well its been 2 and a half months and his visual ddisturbances are stilk there and floaters getting worse, he feel light headed but he can sleep now and eat please someone help me what could it be? Which exams to do? Eyes doctors told him nothing was bad with his eyes, he has dry eyes since that, light sensivity, stringy large floaters, starbursts etc please help