Table 2.

Spearman correlation between UPSIT total score and visual function and structure measures

Visual Function Measures	Correlation with UPSIT Score (95% C.I.)†	P-value
Visual Acuity	−0.05 (−0.22, +0.13)	0.57
Full-field Stimulus Threshold
White Stimulus	+0.07 (−0.13, +0.27)	0.49
Blue Stimulus	+0.06 (−0.14, +0.27)	0.55
Red Stimulus	+0.11 (−0.09, +0.31)	0.28
Full-field Electroretinography
DA 0.01 ERG Response‡	−0.11 (−0.28, +0.07)	0.21
DA 3.0 ERG Response§	−0.14 (−0.30, +0.04)	0.13
LA 3.0 Flicker ERG Response¶	−0.12 (−0.29, +0.06)	0.19
Kinetic Perimetry
I4e Seeing Area	−0.08 (−0.25, +0.10)	0.37
III4e Seeing Area	−0.09 (−0.26, +0.08)	0.30
V4e Seeing Area	−0.12 (−0.29, +0.06)	0.20
Ellipsoid Zone Area on Optical Coherent Tomography	−0.10 (−0.27, +0.08)	0.26
Static Perimetry
Full-field Hill of Vision	−0.11 (−0.28, +0.07)	0.23
30 Degree Hill of Vision	−0.11 (−0.29, +0.07)	0.21
Mean Sensitivity	−0.10 (−0.27, +0.08)	0.26
Microperimetry Mean Retinal Sensitivity	−0.11 (−0.31, +0.10)	0.32

^†Spearman partial correlation adjusted for age at enrollment.

^‡The amplitude of the b-wave from the dark adapted 0.01 ERG response which reflects a rod-driven bipolar cell response.

^§The amplitude of the b-wave of the dark adapted 3.0 ERG response, which arises from a combined response of both rod and cone systems.

^¶The trough-to-peak amplitude of the light-adapted 30 Hz flicker ERG response, which is cone-driven.