A single cohort prospective trial of the immediate effects of spinal manipulation on visual acuity

PMC full text:

J Can Chiropr Assoc. 2016 Mar; 60(1): 88–92.

Copyright/License ►Request permission to reuse: Copyright © JCCA 2016

Table 1.

Visual acuity pre- and post-treatment.

	Outcome Measure	Pre-treatment Mean +(S.D.)	Post-treatment Mean +(S.D.)	p-value
1. Right eye	Snellen fraction	61 (63)	52 (56)	0.059 (t-test)
	Snellen line	5.6 (3.1)	6.2 (3.3)	0.006 (t-test)
	ETDRS	70 (20)	74 (20)	0.005 (t-test) 0.013 (Wilcoxon)
2. Left eye	Snellen fraction	52 (55)	54 (54)	0.075 (t-test)
	Snellen line	6.1 (3.2)	5.8 (3.2)	0.110 (t-test)
	ETDRS	74 (20)	72 (19)	0.085 (t-test) 0.075 (Wilcoxon)
3. Pooled results	ETDRS	62(16)	64(18)	0.024 (Wilcoxon)

Legend: Segregated outcomes for the (1.) right and (2.) left eyes were Snellen fraction, Snellen line and Early Treatment Diabetes Retinopathy Study (ETDRS) score. P values were generated using paired, two-tailed t-tests and the Wilcoxon signed rank test. For the (3.) pooled results of right and left eyes with pre-treatment EDTRS score of 80 or less, data were analyzed only with the Wilcoxon signed rank test.