Table 1.

Clinical characteristics of retinitis pigmentosa patients with fair and poor visual acuity.

	Fair VA (n = 21)	Poor VA (n = 18)	p Value
Age	$44.57 \pm$ 16.13	$52.06 \pm$ 14.16	0.135
Male gender, no. (%)	10 (47.6)	7 (38.9)	0.584
Optical coherence tomography
$\mathrm{Central} \mathrm{macular} \mathrm{thickness} (\mathsf{\mu }$m)	$240.19 \pm$ 46.09	$190.28 \pm$ 48.95	0.002
$\mathrm{Choroidal} \mathrm{thickness} (\mathsf{\mu }$m)	$286.60 \pm$ 83.65	$256.06 \pm$ 111.23	0.624
Loss of EZ integrity, no. (%)	5 (23.8)	14 (77.8)	0.001
Fundus autofluorescence pattern, no. (%)			0.024
Large ring	11 (52.4)	3 (16.7)
Small ring	7 (33.3)	6 (33.3)
Patchy atrophy	3 (14.3)	9 (50)
Microperimetry
Mean retinal sensitivity (dB)	$14.98 \pm$ 7.75	$6.45 \pm$ 7.24	0.001
$\mathrm{Fixation} \mathrm{points} \mathrm{within} 2°$ diameter circle (%)	$68.29 \pm$ 26.88	$36.72 \pm$ 31.96	0.002
$\mathrm{Fixation} \mathrm{points} \mathrm{within} 4°$ diameter circle (%)	$87.43 \pm$ 15.49	$65.00 \pm$ 27.45	0.005