Postkeratoplasty Anterior and Posterior Corneal Surface Wavefront Analysis: Descemet’s Stripping Automated Endothelial Keratoplasty versus Penetrating Keratoplasty

Table 1

Demographic and refractive data.

	Controls	PK group	DSAEK group	Comparison
	(𝑛=30)	(𝑛=28)	(𝑛=30)	(𝑃*)
Patient's age (years)	66.6±15.7	67.7±14.1	70.5±12.4	0.10
	(40–87)	(21.8–86.2)	(43.2–84.8)
Time interval from surgery (months)	—	33.3±14.6	32.5±13.1	0.58
		(19.1–47.3)	(18.7–43.1)
Time interval from suture removal (months)	—	23.9±13.8	26.0±12.4	0.43
		(11.2–35.1)	(10.4–34.9)
BSCVA (Snellen lines)	0.91±0.2^a	0.53±0.3	0.60±0.2	0.001
	(0.5–1.0)	(0.1–1.0)	(0.4–1.0)
Spherical-equivalent error (D)	0.05±2.0	−1.45±4.8^b	0.33±1.7	0.01
	(−3.7/2.5)	(−14.1/1.6)	(−2.1/3.9)
Mean anterior corneal curvature (D)	43.9±1.4	45.4±2.8^a	43.1±1.6	0.008
(Sim K1 + Sim K2)/2	(41.1–47.5)	(42.1–51.4)	(39.3–45.8)
Anterior corneal astigmatism (D)	0.75±0.5	4.49±2.9^a	1.38±0.5	0.0001
(Sim K2 − Sim K1) absolute value	(0.2–2.5)	(1.2–9.8)	(0.6–2.7)

Results are given as median ± SD (95% confidence interval).
*Kruskal-Wallis test.
BSCVA: best spectacles-corrected visual acuity; D: diopters; Sim K: simulated keratometric value.
^aSignificantly higher than the other groups.
^bSignificantly lower than the other groups.