Lamellar Macular Holes: The Role of Microperimetry in Functional Assessment

Table 4

Statistical analysis of demographical characteristics and functional and morphological parameters, considered for all patients and according to IZ/EZ-ELM alteration groups. LogMAR best-corrected visual acuity; mean central and total retinal sensitivity (mCRS and mTRS) in dB; LMH diameters and central foveal thickness (CFT) in microns. Interdigitation zone and ellipsoid zone (IZ/EZ) and the external limiting membrane (ELM).

	All patients	IZ/EZ-ELM integrity		value
		No alteration	Layers alteration
N	18	10	8	—
Age	72.5 (68.0; 76.0)	72.5 (68.0; 75.0)	73.5 (70.5; 77.0)	0.56^a
BCVA	0.09 (0.0; 0.15)	0.0 (0.0; 0.09)	0.15 (0.07; 0.41)	0.02^a
mCRS	13.5 (10.3; 16.5)	16.4 (15.7; 17.7)	10.1 (7.8; 11.2)	0.0001^a
mTRS	15.2 (12.5; 16.3)	15.8 (14.9; 16.7)	12.0 (8.8; 14.8)	0.04^a
LMH depth	235.5 (190.0; 263.0)	255.5 (202.0; 278.0)	219.5 (185.0; 255.0)	0.36^a
LMH diameter	539.5 (397.0; 650; 0)	569.0 (410.0; 634.0)	498.5 (371.5; 714.0)	0.70^a
CFT	164.5 (157.0; 185.0)	173.0 (162.0; 186.0)	153.0 (125.0; 169.5)	0.02^a
Stable fixation, (%)	12 (66.7%)	8 (80.0%)	4 (50.0%)	0.32^b
Predominantly central fixation status, (%)	15 (83.3%)	9 (90.0%)	6 (75.0%)	0.56^b

Median (25° percentile; 75° percentile) for continuous variables; (%) for categorical variables. ^aWilcoxon rank test. ^bFisher’s exact test.