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. Author manuscript; available in PMC: 2020 Nov 25.
Published in final edited form as: Ocul Surf. 2020 Jul 22;18(4):641–650. doi: 10.1016/j.jtos.2020.07.006

Table 1.

Demographic features of patients and control groups.

Parameter RS-NCP H-NCP C-1 C-2 P value
N 16 7 15 22
Age (years) 39.7 ± 13.4 (25.0–66.0) 70.7 ± 12.8 (56.0–89.0) 33.6 ± 9.5 (22.0–49.0) 61.0 ± 6.8 (51.0–74.0) RS-NCP vs. C-1, p = 0.61; H-NCP vs. C-2, p = 0.21; RS-NCP vs. H-NCP, p = 0.001
Gender (female/male) 7/9 4/3 4/11 10/12 0.21
Time between insult and pain onset (weeks) 9.4 ± 17.3 (0.1–68.0) 45.0 ± 32.5 (2.0–96.0) – – 0.006
Duration of pain (weeks) 89.3 ± 75.3 (1.0–252.0) 172.0 ± 183.3 (6.0–416.0) – – 0.59

RS-NCP: Neuropathic corneal pain due to refractive surgery; H-NCP: Neuropathic corneal pain due to herpetic eye disease; C-1: Control group 1; C-2: Control group 2.