Table 3. Correlation between VEP and VA, CSF Pressure, Swollen optic disc and CD4 count in 66 patients.

		VEP Latency of Right Eye		p value	VEP Latency of Left Eye		p value	VEP Amplitude of Right Eye		P value	VEP amplitude of Left eye		P value
		n = 64			n = 66			n = 64			n = 66
		Normal	Abnormal		Normal	Abnormal		Normal	Abnormal		Normal	Abnormal
Visual Acuity	Normal	27	13	0.003	26	19	0.03	30	10	0.7	35	10	0.5
		(67.5%)	(32.5%)		(57.8%)	(42.2%)		(75%)	(25%)		(77.8%)	(22.2%)
	Abnormal	7	17		6	15		19	5		18	3
		(29.2%)	(70.8%)		(28.6%)	(71.4%)		(79.2%)	(20.8%)		(85.7%)	(14.3%)
CSF Pressure	Normal	11	9	0.9	10	9	0.6	17	3	0.3	15	4	0.9
	Elevated	21	18		19	22		28	11		33	8
Swollen optic disc	No	29	18	0.02	26	21	0.047	36	11	0.9	37	10	0.7
	Yes	5	12		5	13		13	4		15	3
CD4 count	<50	19	17	0.6	16	22	0.6	28	8	0.2	30	8	0.9
	50–100	10	6		9	7		12	4		13	3
	101–199	1	2		1	1		3	0		2	0
	>200	1	0		1	0		0	1		1	0

VEP – Visual Evoked Potential, Visual Acuity refers to Best Corrected Visual Acuity.