Perioperative changes of the intraocular pressure during the treatment of epiretinal membrane by using 25- or 27-gauge sutureless vitrectomy without gas tamponade

Figures & data

Figure 1 The mean IOP during the perioperative period in each group.

Abbreviations: 25-P, 25-gauge phacovitrectomy; 25-A, 25-vitrectomy alone; 27-P, 27-gauge phacovitrectomy; 27-A, 27-vitrectomy alone; IOP, intraocular pressure; PreOp, preoperative day; POD, postoperative day; POW, postoperative week; POM, postoperative month.

Table 1 Mean values for each factor in all of the groups

	25-P	25-A	27-P	27-A
Age (years)	71.3±7.6	73.9±9.8	72.9±6.3	77.7±3.8
Axial length (mm)	23.6±1.3	23.6±1.6	23.7±1.3	22.9±1.1
Surgical time (minutes)	38.0±6.6	29.7±9.6	37.0±7.6	30.8±5.3

Note: Data are expressed as mean ± standard deviation.

Abbreviations: 25-P, 25-gauge phacovitrectomy; 25-A, 25-vitrectomy alone; 27-P, 27-gauge phacovitrectomy; 27-A, 27-vitrectomy alone.

Table 2 Mean value of the IOP during the perioperative period and comparisons of the postoperative IOPs with the PreOp in each group

Group	PreOp	POD1	POD2	POW1	POM1
25-gauge phacovitrectomy (n=73)	14.8±2.7 (8–22)	12.2±4.6 (4–24) P=<0.001	11.9±3.5 (5–22) P=<0.001	14.0±3.5 (5–23) P=0.139	13.9±3.1 (8–20) P=0.072
25-gauge vitrectomy alone (n=15)	13.2±2.7 (9–19)	9.9±3.6 (5–20) P=0.011	10.9±2.8 (7–16) P=0.036	13.9±3.5 (6–22) P=0.537	15.1±3.6 (9–22) P=0.128
27-gauge phacovitrectomy (n=47)	14.3±3.0 (9–20)	12.7±4.0 (5–25) P=0.032	12.3±3.6 (7–24) P=0.004	13.9±3.1 (10–21) P=0.566	13.6±3.0 (9–21) P=0.261
27-gauge vitrectomy alone (n=12)	12.2±2.7 (9–16)	11.9±2.6 (7–15) P=0.818	11.8±3.3 (7–18) P=0.739	13.3±2.9 (10–19) P=0.316	14.3±2.7 (10–19) P=0.063

Notes: Data are expressed as mean (mmHg) ± standard deviation (upper) and ranges (lower). P-values <0.05 were considered statistically significant.

Abbreviations: IOP, intraocular pressure; PreOp, preoperative day; POD, postoperative day; POW, postoperative week; POM, postoperative month.