Table 4: Comparison of Retinal Volume (mm3) Values Before and After Surgery in ILM Peeling Group and Non-ILM Peeling Group.

ILM peeling group     Non-ILM peeling group p1 p2 p3
Mean±SD Median (min-max)  Mean±SD Median (min-max)
TMV
Preoperative
Postoperative		 10,25±0,82
9,47±0,57		 10,47 (8,59-11,26)  10,15±0,76
9,59 (8,21-10,39)  9,61±0,88		 10,17 (9,19-11,94)
9,42 (8,19-11,46)		 <0,001** <0,001** 0,701#
0,584#
RNFL volume
Preoperative
Postoperative		 1,66±0,43
1,05±0,21		 1,64 (0,97-2,55)  1,37±0,49
1,00 (0,79-1,63)  1,13±0,30		 1,34 (0,48-2,25)
1,09 (0,79-1,75)		 <0,001* 0,048** 0,072#
0,646¥
GCL volume
Preoperative
Postoperative		 1,24±0,19
1,08±0,13		 1,20 (1,02-1,82)  1,37±0,24
1,11 (0,80-1,36)  1,14±0,14		 1,30 (0,94-1,82)
1,15 (0,81-1,35)		 0,722* <0,001** 0,038¥
0,262#
IPL volume
Preoperative
Postoperative		 1,10±0,10
0,91±0,08		 1,08 (0,94-1,30)  1,17±0,16
0,91(0,77-1,07)  0,96±0,13		 1,20 (0,87-1,56)
0,92 (0,77-1,18)		 <0,001** <0,001** 0,104#
0,197#
INL volume
Preoperative
Postoperative		 1,23±0,14
1,23±0,12		 1,22 (1,00-1,45)  1,21±0,11
1,23 (1,00-1,44)  1,22±0,15		 1,22 (1,01-1,43)
1,20 (1,01-1,57)		 0,815** 0,708** 0,701#
0,727#
OPL volume
Preoperative
Postoperative		 0,94±0,10
0,88±0,09		 0,92 (0,76-1,15)  0,98±0,10
0,86 (0,73-1,11)   0,88±0,07		 0,98 (0,80-1,22)
0,86 (0,73-1,02)		 0,019** 0,001** 0,150#
0,926#
ONL volume
Preoperative
Postoperative		 1,87±0,23
2,08±0,30		 1,84 (1,46-2,28)  1,81±0,30
2,15 (1,57-2,60)   2,07±0,32		 1,85 (1,37-2,46)
2,10 (1,60-2,69)		 0,003** <0,001** 0,518#
0,879#

Abbreviations: ILM, Internal Limiting Membrane; ERM, epiretinal membrane; TMV, total macular volume; RNFL, retinal nerve fiber layer; GCL, ganglion cell layer; IPL, inner plexiform layer; INL, inner nuclear layer; OPL, outher plexiform layer; ONL, outher nuclear layer; SD, standard deviation; min, minumum; max, maximum. *Wilcoxon test, **Paired sample t test, #Student t test, ¥Mann Whitney U test. p1, ILM peeling group (before vs.. after surgery); p2, non-ILM peeling group (before vs.. after surgery); p3, ILM peeling group vs.. non-ILM peeling group.