TY - JOUR
T1 - Ocular higher-order aberrations in myopia and skiascopic wavefront repeatability
AU - Zadok, David
AU - Levy, Yair
AU - Segal, Ori
AU - Barkana, Yaniv
AU - Morad, Yair
AU - Avni, Isaac
PY - 2005/6
Y1 - 2005/6
N2 - Purpose: To study the distribution of ocular higher-order aberrations (HOAs) in a myopic population and to assess the repeatability of HOA measurements determined by a commercially available skiascopic wavefront sensor. Setting: Department of Ophthalmology, Assaf Harofeh Medical Center, Zerifin, Israel. Methods: Ocular HOAs were examined 3 times across a 6.0 mm naturally dilated pupil in 61 eyes using the Optical Path Difference (OPD)-scan wavefront aberrometer. Root-mean-square (RMS) values of HOAs, total spherical aberration (TSA), total coma (TC), and total trefoil (TT) were analyzed. Correlation analysis was performed to assess the aberration symmetry between right and left eyes. The repeatability of the OPD-scan measurements was assessed by calculating Pearson r correlation coefficients between each pair of measurements and the interclass correlation coefficients between the 3 measurements of each score. Results: The mean RMS values of HOAs, TSA, TC, and TT were 0.347 μm ± 0.252 (SD), 0.120 ± 0.174 μm, 0.165 ± 0.168 μm, and 0.252 ± 0.157μm, respectively. The HOAs, TSA, TC, and TT changed slightly and not significantly with increasing refractive error (all P>.05). The RMS level of HOAs and TTR of the 3rd measurement was significantly different from the 1st and 2nd measurements (P<.05), with overall low correlation between the 3 measurements for the HOAs, TSA, TC, and TT. Conclusions: The ocular wavefront aberrations varied greatly from subject to subject. Ocular HOAs were not correlated with refractive error. The repeatability of HOAs measurements with the OPD-aberrometry was low.
AB - Purpose: To study the distribution of ocular higher-order aberrations (HOAs) in a myopic population and to assess the repeatability of HOA measurements determined by a commercially available skiascopic wavefront sensor. Setting: Department of Ophthalmology, Assaf Harofeh Medical Center, Zerifin, Israel. Methods: Ocular HOAs were examined 3 times across a 6.0 mm naturally dilated pupil in 61 eyes using the Optical Path Difference (OPD)-scan wavefront aberrometer. Root-mean-square (RMS) values of HOAs, total spherical aberration (TSA), total coma (TC), and total trefoil (TT) were analyzed. Correlation analysis was performed to assess the aberration symmetry between right and left eyes. The repeatability of the OPD-scan measurements was assessed by calculating Pearson r correlation coefficients between each pair of measurements and the interclass correlation coefficients between the 3 measurements of each score. Results: The mean RMS values of HOAs, TSA, TC, and TT were 0.347 μm ± 0.252 (SD), 0.120 ± 0.174 μm, 0.165 ± 0.168 μm, and 0.252 ± 0.157μm, respectively. The HOAs, TSA, TC, and TT changed slightly and not significantly with increasing refractive error (all P>.05). The RMS level of HOAs and TTR of the 3rd measurement was significantly different from the 1st and 2nd measurements (P<.05), with overall low correlation between the 3 measurements for the HOAs, TSA, TC, and TT. Conclusions: The ocular wavefront aberrations varied greatly from subject to subject. Ocular HOAs were not correlated with refractive error. The repeatability of HOAs measurements with the OPD-aberrometry was low.
UR - http://www.scopus.com/inward/record.url?scp=22544468500&partnerID=8YFLogxK
U2 - 10.1016/j.jcrs.2004.10.075
DO - 10.1016/j.jcrs.2004.10.075
M3 - ???researchoutput.researchoutputtypes.contributiontojournal.article???
C2 - 16039485
AN - SCOPUS:22544468500
SN - 0886-3350
VL - 31
SP - 1128
EP - 1132
JO - Journal of Cataract and Refractive Surgery
JF - Journal of Cataract and Refractive Surgery
IS - 6
ER -