Prognostic factors for acute central retinal artery occlusion treated with hyperbaric oxygen: The Hong Kong study report number five

Table 1 Data on baseline parameters investigated, n (%)

	Mean	Inter quartile range	SD	Median
Age (years)	67.5	22	13.3	70.5
Pre-HBOT VA (logMAR)	2.0	0.4	0.3	2.0
Pre-HBOT VA (Snellen acuity)	Hand movement	--	--	Hand movement
Post-HBOT VA (logMAR)	1.5	0.4	0.7	1.7
Post-HBOT VA (Snellen acuity)	20/640	--	--	Finger count
VA changes (logMAR)	-0.48	0.65	0.57	-0.3
VA changes (ETDRS letter score)	9	--	--	3
Onset-to-attendance time (min)	139	157	116	105
Symptom-to-HBOT time (min)	789	511	450	585
1 mm zone of CMT (µm)	334	96	64	332
1-to-3 mm circular rim of CMT (µm)	430	76	51	437
Fundus fluorescein angiography complete retinal perfusion time (s)	221	177	212	111
	Anti-platelet	Anticoagulant	Nil
Anti-platelet/anticoagulant history	8 (30.8)	2 (7.7)	16 (61.5)

CMT: Central macular thickness; HBOT: Hyperbaric oxygen therapy; LogMAR: Logarithm of minimal angle of resolution; VA: Visual acuity.

Table 2 Complications after hyperbaric oxygen therapy

	n	Percentage
Cerebrovascular stroke	1	3.8
Hypoglycaemia	3 (2 with diabetes mellitus)	11.5
Barotrauma	4	15.4