High myopic photorefractive keratectomy outcomes with the Alcon Wavelight^® EX500 excimer laser

Figures & data

Table 1 Preoperative comparison of eyes in both groups

	Eyes ≥6 D <8 D (n=87)	Eyes ≥8 D (n=31)	P-value
Age	32.7±7.76 (21–53)	32.2±6.64 (23–48)	0.720
Female/male	26 (52%)/24 (48%)	15 (79%)/4 (21%)
Mean LogMAR CDVA	−0.07±0.07 (−0.125 to 0)	−0.06±0.06 (−0.125 to 0)	0.471
CDVA (20/x)	17.0±2.46 (15 to 20)	17.4±2.49 (15 to 20)	0.420
Spherical equivalent (D)	−6.91±0.58 (−7.875 to −6)	−9.02±0.73 (−10.5 to −8.00)	<0.001
Sphere (D)	−7.32±0.75 (−8.75 to −6.25)	−9.51±0.96 (−11.75 to −8.25)	<0.001
Cylinder (D)	0.48±0.29 (0 to 3.00)	0.98±0.89 (0 to 2.50)	0.901

Note: Values represented as mean ± SD (range).

Abbreviations: CDVA, corrected distance visual acuity; D, diopters; LogMAR, logarithm of the minimum angle of resolution; ≥6 D <8 D, more than or equal to 6 D but less than 8 D, ≥8 D.

Figure 1 Six-month postoperative UDVA versus preoperative CDVA.

Abbreviations: CDVA, corrected distance visual acuity; UDVA, uncorrected distance visual acuity; postop, postoperative; preop, preoperative.

Figure 2 Twelve-month postoperative UDVA versus preoperative CDVA.

Abbreviations: CDVA, corrected distance visual acuity; UDVA, uncorrected distance visual acuity; postop, postoperative; preop, preoperative.

Figure 3 Percentage of eyes at 6 months postoperatively that lost or gained lines of Snellen corrected distance visual acuity (CDVA).

Abbreviation: postop, postoperative.

Figure 4 Percentage of eyes at 12 months postoperatively that lost or gained lines of Snellen CDVA.

Abbreviation: CDVA, corrected distance visual acuity; postop, postoperative.

Figure 5 Six-month postoperative spherical equivalent refractive accuracy.

Abbreviation: postop, postoperative.

Figure 6 Twelve-month postoperative spherical equivalent refractive accuracy.

Abbreviation: postop, postoperative.

Figure 7 Twelve-month postoperative predictability of SE with achieved SE (y-axis) and attempted SE (x-axis).

Abbreviation: SE, spherical equivalent refraction; postop, postoperative.

Figure 8 Preoperative and 12-month postoperative refractive astigmatism with percentage of eyes (y-axis) versus refractive astigmatism (diopters [D]) on the x-axis.

Abbreviation: postop, postoperative; preop, preoperative.

Figure 9 Stability of spherical equivalent refraction in diopters (D) at 1, 3, 6, and 12 months.

Abbreviation: postop, postoperative.