Correlation between retinal sensitivity assessed by microperimetry and structural abnormalities on optical coherence tomography after successful epiretinal membrane surgery

Table 4 Mean ± standard deviation of postoperative retinal sensitivity assessed by microperimetry and its correlation with epiretinal membrane (ERM) classification and pre and postoperative optical coherence tomography findings

	Postoperative microperimetry
	(em dB)
	Fovea	p-value	Mean sensitivity	p-value
ERM classification
2	23.0 ± 3.4		23.4. ± 2.8
3	22.7 ± 5.4	0.33^a	23.4 ± 4.4	0.56^a
4	20.4 ± 4.9		21.6 ± 5.8
Preoperative DRIL
Yes	19.8 ± 4.5	0.006^b	21.2 ± 5.4	0.046^b
No	23.8 ± 4.4		23.5 ± 3.2
Preoperative outer retinal changes
Yes	20.1 ± 5.6	0.11	21.3 ± 6.5	0.30
No	22.9 ± 4.4		23.5 ± 3.2
Preoperative intraretinal microcysts
Yes	20.7 ± 4.1	0.23	22.9 ± 3.0	0.78
No	22.9 ± 4.1		23,4 ± 3.7
Postoperative DRIL
Yes	18.5 ± 3.9	0.03^b	21.6 ± 3.2	0.27
No	22.6 ± 3.2		23.3 ± 3.0
Postoperative outer retinal changes
Yes	18.7 ± 4.8	0.007^b	19.1 ± 6.3	0.001^b
No	23.2 ± 4.4		23.4 ± 3.3
Postoperative intraretinal microcysts
Yes	19.3 ± 5.0	0.003^b	20.3.7 ± 5.7	0.02^b
No	23.6 ± 2.9		23.9 ± 3.3
DONFL
Yes	21.9 ± 5.0	0.26	22.8 ± 4.6	0.49
No	24.5 ± 2.4		24.3 ± 1.1

Bold values denote statistical significance at the p < 0.05
ERM epiretinal membrane, DRIL disorganization of the retinal inner layers, OCT optical coherence tomography, DONFL dissociated optic nerve fiber layer
^aANOVA test
^bp values < 0.05 obtained by Student’s t test for independent samples

ISSN: 2056-9920