[Table/Fig-2]:

Comparison of duration of waves (ms) of VEP of left eye between Drug Abus ers (n=58) and Controls (n=30).

Eye	Wave	Drug abusers		Controls		T Value	p-value	Significance
		Mean	SD	Mean	SD
Left	N75	95.13	22.97	67.43	7.80	6.40	<0.001	HS
	P100	125.81	16.95	109.20	15.33	4.43	<0.001	HS
	N145	160.60	20.58	156.96	43.92	0.53	>0.05	NS

S=p<0.05, HS=p<0.001, NS=>0.05)