The Structure-Function Relationship between Macular Morphology and Visual Function Analyzed by Optical Coherence Tomography in Retinitis Pigmentosa

Table 2

Univariable analysis.

Parameters	Versus log VFA^¶				Versus BCVA (log MAR)^#
	𝑟	𝑟^2	𝑃	𝑛	𝑟	𝑟^2	𝑃	𝑛
PROS area^†	0.459	0.211	<0.001*	100	−0.389	0.151	<0.001*	100
PROS area^‡	0.509	0.259	<0.001*	64	−0.370	0.136	0.003*	64
PROS horizontal length	0.483	0.233	<0.001*	100	−0.395	0.156	<0.001*	100
PROS vertical length	0.426	0.181	<0.001*	100	−0.376	0.141	<0.001*	100
CRT	0.276	0.076	0.005*	100	−0.339	0.115	0.001*	100
Inner retinal thickness^∮	0.153	0.023	0.134	97	−0.297	0.088	0.003*	97
Outer retinal thickness^∥	0.412	0.170	<0.001*	97	−0.519	0.269	<0.001*	97
Choroid thickness	0.017	0.000	0.866	96	−0.100	0.010	0.331	96

∗P < 0.05.
^†Photoreceptor outer segment area (the horizontal PROS length and the vertical PROS length were multiplied).
^‡Photoreceptor outer segment area (calculated from an en-face slab image).
^∮Internal limiting membrane to external limiting membrane (inner retinal thickness).
^∥External limiting membrane to retinal pigment epithelium (outer retinal thickness).
¶Log-converted visual field area (nsu).
^#Best-corrected visual acuity by logMAR scale.