Visual outcome following bilateral non-arteritic anterior ischemic optic neuropathy: a systematic review and meta-analysis

Table 1 Studies included in the meta-analysis of visual acuity following bilateral NAION

Author	Year	Publication type	No. of patients	Correlation coefficient	Statistical Analysis (P or CI)
Studies that found correlation in visual outcome
Boone et al. [11]	1996	Retrospective	23	0.522	0.043
Mercado et al. [12]	2012	Retrospective	86	0.276	0.01
Newman et al. [3]	2002	Prospective	48	0.36	CI 0.08-0.58
Studies that found no correlation in visual outcome
WuDunn et al. [8]	1997	Retrospective	31	0.19	N/A
Kupersmith et al. [10]	1997	Retrospective	33	0.28	CI −0.07-0.57
Georgiades et al. [13]	1966	Retrospective	17	0.26
Hayreh et al. [9]	2013	Retrospective	174	0.33	CL 0.24-0.40
Dotan et al. [7]	2014	Retrospective	25	0.279	0.176
Studies with only raw data
Arnold et al. [1]	2013	Retrospective	108	0.381	0.227
Borchert et al. [14]	1988	Retrospective	10	0.547	0.339

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