Predictability of ocular spherical aberration after cataract surgery determined using preoperative corneal spherical aberration.
OBJECTIVE
To evaluate the predictability of total postoperative spherical aberration after aspheric intraocular lens (IOL) implantation using preoperative corneal spherical aberration.


METHODS
Keio University Hospital, Tokyo, Japan.


METHODS
Corneal and ocular higher-order aberrations (HOAs) were analyzed preoperatively and postoperatively in eyes having cataract extraction with aspheric IOL implantation. The predicted postoperative total spherical aberration Z(4,0) was calculated by adding the preoperative corneal spherical aberration and the labeled spherical aberration of the IOL. The prediction error of the postoperative total spherical aberration was calculated by subtracting the predicted postoperative total spherical aberration from the postoperative total spherical aberration. Surgically induced corneal spherical aberration was calculated by subtracting the postoperative from the preoperative corneal spherical aberration.


RESULTS
There were no statistically significant differences between preoperative and postoperative corneal spherical aberration, 3rd-order aberration, or HOAs. The prediction error of the postoperative total spherical aberration was within +/-0.05 microm in 9 (24.3%) of the 37 eyes evaluated and within +/-0.10 microm in 18 eyes (48.6%). Statistically significantly correlations were found between the surgically induced corneal spherical aberration and prediction error of postoperative total spherical aberration, the preoperative corneal spherical aberration and surgically induced corneal spherical aberration, and the preoperative corneal spherical aberration and prediction error of postoperative total spherical aberration.


CONCLUSIONS
Predictability of postoperative ocular spherical aberration after cataract surgery with aspheric IOL implantation was insufficient because of the surgically induced corneal spherical aberration. Considering surgically induced corneal spherical aberration could improve the predictability of postoperative ocular spherical aberration.
Negishi
Kazuno
K
Department of Ophthalmology, Keio University School of Medicine, Tokyo, Japan. fwic7788@mb.infoweb.ne.jp
Kodama
Chiyo
C
Yamaguchi
Takefumi
T
Torii
Hidemasa
H
Saiki
Megumi
M
Dogru
Murat
M
Ohnuma
Kazuhiko
K
Tsubota
Kazuo
K
D000368:Aged; D000369:Aged, 80 and over; D015350:Contrast Sensitivity / Q000502:physiology; D019781:Corneal Topography; D057108:Corneal Wavefront Aberration / Q000175:diagnosis* / Q000209:etiology; D005260:Female; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D008875:Middle Aged; D018918:Phacoemulsification; D011183:Postoperative Complications; D057234:Preoperative Period; D019591:Pseudophakia / Q000503:physiopathology; D014792:Visual Acuity / Q000502:physiology