Table 2.

Comparison of Central and Peripheral Retinal Nonperfusion in Patients with Branch Retinal Vein Occlusion

Retinal Nonperfusion at Baseline
	Central Nonperfusion, n(%)	Peripheral Nonperfusion, n(%)	Spearman’s Correlation Coefficient (rho)	p-value
None	6(22.2)	3(7.9)	0.55	0.003
Minimal	0(0.0)	1(2.6)
Mild	12(44.4)	16(42.1)
Moderate	5(18.5)	6(15.8)
Severe	4(14.8)	12(31.6)
Retinal Nonperfusion at Month 6
	Central Nonperfusion, n(%)	Peripheral Nonperfusion, n(%)	Spearman’s Correlation Coefficient (rho)	p-value
None	6(18.8)	4(11.1)	0.73	<0.001
Minimal	2(6.3)	4(11.1)
Mild	12(37.5)	13(36.1)
Moderate	10(31.3)	5(13.9)
Severe	2(6.3)	10(27.9)
Retinal Nonperfusion at Month 12
	Central Nonperfusion, n(%)	Peripheral Nonperfusion, n(%)	Spearman’s Correlation Coefficient (rho)	p-value
None	6(18.2)	6(17.1)	0.44	0.01
Minimal	3(9.1)	6(17.1)
Mild	14(42.4)	9(25.7)
Moderate	9(27.3)	6(17.1)
Severe	1(3.0)	8(22.9)
Retinal Nonperfusion at Month 24
	Central Nonperfusion, n(%)	Peripheral Nonperfusion, n(%)	Spearman’s Correlation Coefficient (rho)	p-value
None	6(19.4)	4(12.9)	0.35	0.05
Minimal	11(35.5)	4(12.9)
Mild	4(12.9)	9(29.0)
Moderate	8(25.8)	7(22.6)
Severe	2(6.5)	7(22.6)
Retinal Nonperfusion at Month 36
	Central Nonperfusion, n(%)	Peripheral Nonperfusion, n(%)	Spearman’s Correlation Coefficient (rho)	p-value
None	6(19.4)	5(15.6)	0.68	<0.001
Minimal	4(12.9)	4(12.5)
Mild	12(38.7)	10(31.3)
Moderate	7(22.6)	5(15.6)
Severe	2(6.5)	8(25.0)