The change in the manifest spherical equivalent is shown in figure 6.
A total of 47.4% of the laser treated eyes were within 0.25 D of intended postoperative manifest spherical equivalent refraction, compared with 22.0% for the manual eyes (p=0.003).
Manifest spherical equivalent was decreased, but not significantly, from 0.00±0.35 D 1 week postoperatively, to −0.05±0.16 D 1 year postoperatively (p=0.201, Wilcoxon signed-rank test).
Mean postoperative manifest spherical equivalent refraction was less than 0.50 diopter (D) in the hyperopic eyes treated by PRK, 1 LASEK, 6 or LASIK performed with a mechanical microkeratome 1, 3– 5, 7 or a femtosecond laser.
Preoperatively, 1 week, and 1, 3, 6 and 12 months postoperatively, we determined the following: logMAR of uncorrected distance visual acuity (UDVA), logMAR of corrected distance visual acuity (CDVA), manifest spherical equivalent refraction and endothelial cell density (preoperatively and 1 year postoperatively), in addition to the usual slit-lamp biomicroscopic and funduscopic examinations.
A scatter plot of the attempted versus the achieved manifest spherical equivalent correction at 1 year postoperatively is shown in figure 3. The percentages of eyes within different dioptre ranges of the attempted correction and refractive astigmatism are shown in figures 4 and 5, respectively.
Think initially in musical terms and then try to manifest the prose equivalent.
To compare the variance in manifest refraction spherical equivalent (MRSE) after photorefractive keratectomy (PRK) with mitomycin-C (MMC), PRK without MMC, and laser in situ keratomileusis (LASIK) for the treatment of myopic astigmatism.
Manifest refractive spherical equivalent was 0.14±0.56 D at 6 months postoperatively.
