Microperimetric Biofeedback Training Improved Visual Acuity after Successful Macular Hole Surgery

Table 2

Visual performance before and after the training.

Patient number	Period after operation (months)	Training (number of sessions)	Distance of foveal displacement (µm)	Decimal BCVA		Reading speed (words/min)		Fixation stability (%)		63% BCEA (square degree)
				Pre	Post	Pre	Post	Pre	Post	Pre	Post
1	5	3	89.4	0.2	0.4	243	461	38	72	1.2	0.5
2	3	3	249.0	0.5	0.6	260	292	92	98	0.8	0.2
3	3	3	387.6	0.6	1.0	319	338	96	67	0.3	1.6
4	3	5	35.7	0.3	0.6	279	280	70	84	0.4	0.2
5	6	5	82.7	0.5	1.0	477	486	99	100	0.9	0.1
6	3	4	152.0	0.6	1.0	326	328	97	100	3.3	0.1
7	9	4	192.8	0.5	1.0	387	429	96	96	1.2	0.9
8	4	3	132.7	0.6	0.8	344	360	100	100	0.1	0.1
9	5	3	77.2	0.6	0.8	418	430	100	100	0.4	0.1

BCVA: best corrected visual acuity;
Pre: baseline values;
Post: values at the end of training;
BCEA: bivariate contour ellipse area.