Changes in Corneal Parameters after DMEK Surgery: A Swept-Source Imaging Analysis at 12-Month Follow-Up Time

Table 4

The correlations between baseline CCT and the changes in VA, CCT, keratometry, astigmatism, astigmatism asymmetry, and higher-order aberration values obtained in the 3 and 6 mm optical zones after DMEK surgery.

Correlation of baseline CCT and			At baseline	At 1 month	At 3 months	At 6 months	At 12 months
BCVA change			−0.54	+0.20	+0.26	+0.20	+0.27
CCT change			1.00	−0.90	−0.87	−0.91	−0.91
Mean keratometry change	Anterior	3 mm OZ	+0.04	−0.005	−0.03	−0.01	−0.14
		6 mm OZ	−0.01	−0.07	−0.03	+0.01	−0.06
	Posterior	3 mm OZ	+0.04	−0.13	−0.07	−0.004	−0.05
		6 mm OZ	+0.08	−0.22	−0.12	−0.13	−0.18
	Total	3 mm OZ	+0.05	−0.07	−0.03	+0.02	−0.15
		6 mm OZ	+0.02	−0.09	−0.06	+0.002	−0.09
Mean astigmatism change	Anterior	3 mm OZ	+0.42	−0.18	−0.45	−0.50	−0.56
		6 mm OZ	+0.48	−0.30	−0.52	−0.57	−0.63
	Posterior	3 mm OZ	+0.52	−0.62	−0.54	−0.52	−0.62
		6 mm OZ	+0.48	−0.48	−0.45	−0.44	−0.49
	Total	3 mm OZ	+0.49	−0.31	−0.54	−0.55	−0.65
		6 mm OZ	+0.66	−0.41	−0.62	−0.65	−0.70
Astigmatism asymmetry change	Anterior	3 mm OZ	+0.58	−0.20	−0.29	+0.07	−0.11
		6 mm OZ	+0.51	−0.15	−0.31	+0.02	+0.02
	Posterior	3 mm OZ	+0.58	−0.36	−0.51	−0.52	−0.58
		6 mm OZ	+0.62	−0.49	−0.52	−0.56	−0.66
	Total	3 mm OZ	+0.61	−0.58	−0.55	−0.53	−0.60
		6 mm OZ	+0.59	−0.45	−0.53	−0.54	−0.66
Higher-order aberrations change	Anterior	3 mm OZ	+0.44	−0.33	−0.44	−0.53	−0.54
		6 mm OZ	+0.48	−0.31	−0.40	−0.46	−0.54
	Posterior	3 mm OZ	+0.73	−0.64	−0.63	−0.57	−0.68
		6 mm OZ	+0.77	−0.77	−0.65	−0.58	−0.71
	Total	3 mm OZ	+0.56	−0.35	−0.48	−0.64	−0.61
		6 mm OZ	+0.57	−0.36	−0.48	−0.50	−0.60

Correlations were calculated for 4 consecutive time points, i.e., 1, 3, 6, and 12 months postoperatively. At the zero observation time point, baseline CCT values refer to baseline absolute values of listed parameters. Significant values are shown in bold.