Table 2.

The Visual Acuity and Electroretinographic Parameters Before and After Silicone Oil Removal

Case	Visual Acuity				ERG Parameter
					Amplitude (uV)				Implicit Time (msec)
	Before SOR		After SOR		Before SOR		After SOR		Before SOR		After SOR
	Decimal VA	logMAR	Decimal VA	logMAR	a Wave	b Wave	a Wave	b Wave	a Wave	b Wave	a Wave	b Wave
1	0.1	1.00	0.4	0.40	−7.7	8.2	−10.9	18.7	12.1	40.1	19.7	64.9
2	0.2	0.70	0.3	0.52	−1.6	2.7	−11.8	15.6	24.3	60.9	20.5	51.5
3	0.01	2.00	0.06	1.22	0	0	0	0	n.a.	n.a.	n.a.	n.a.
4	0.4	0.40	0.6	0.22	−18.6	19.8	−6.4	19.6	19.6	50.3	16.5	59.2
5	0.09	1.05	0.15	0.82	0	0	0	0	n.a.	n.a.	n.a.	n.a.
6	0.01	2.00	0.2	0.70	0	0	0	0	n.a.	n.a.	n.a.	n.a.
7	0.2	0.70	0.4	0.40	0	0	0	0	n.a.	n.a.	n.a.	n.a.
8	0.3	0.52	0.6	0.22	−10.8	10	−17.8	28.9	22.9	51.5	20.1	62
Average*	0.09	1.05	0.273	0.56	−4.84	5.09	−5.86	10.35	19.73	50.70	19.20	59.40
Standard deviation		0.587		0.318	6.493	6.704	6.528	10.93	4.721	7.369	1.584	4.986

Notes: *Geometric mean is shown as an average for decimal VA.

Abbreviations: SOR, silicone oil removal; n.a., not applicable; VA, visual acuity; log MAR, logarithm of minimal angular resolution.