Toric intraocular lens versus opposite clear corneal incisions to correct astigmatism in eyes having cataract surgery.
OBJECTIVE
To compare toric intraocular lens (IOL) implantation with paired opposite clear corneal incisions (OCCIs) for astigmatism correction in patients having cataract surgery.


METHODS
Ophthalmology Service, Donostia Hospital, San Sebastián, Spain.


METHODS
This randomized prospective clinical study comprised eyes with more than 1.00 diopter (D) of preexisting corneal astigmatism. One group had AcrySof toric IOL implantation and the other, paired 2.75 mm/3.20 mm OCCIs in the steep axis with spherical IOL implantation. Uncorrected (UCVA) and best corrected (BCVA) visual acuity, refraction, corneal and total higher-order aberrations (HOAs), photopic and mesopic contrast sensitivity, and toric IOL axis were measured 3 months postoperatively.


RESULTS
Forty eyes (40 patients) were evaluated. In the toric group, 95% of eyes achieved 20/40 or better UCVA and 70%, 20/25 or better. In the OCCI group, 80% of eyes achieved 20/40 or better UCVA and 50%, 20/25 or better. All eyes achieved 20/25 or better BCVA. Mean refractive cylinder decreased significantly from preoperatively to postoperatively (-1.75 +/- 0.71 to -0.62 +/- 0.46 D, toric group; -1.61 +/- 0.67 to -0.97 +/- 0.51 D, OCCI group) (P<.01). In the toric group, 95% and 100% of eyes were within +/-0.50 D for J(0) and J(45), respectively. In the OCCI group, the percentages were 70% and 100%, respectively. No significant differences in HOA were found between groups (P>.1). Contrast sensitivity was similar except at the highest spatial frequency, being better in the toric group (P<.01).


CONCLUSIONS
Toric IOL implantation achieved a slight enhanced effect over OCCIs in treating preexisting astigmatism.
Mendicute
Javier
J
Ophthalmology Service, Donostia Hospital, San Sebastián, Spain. jmendicu@chdo.osakidetza.net
Irigoyen
Cristina
C
Ruiz
Miguel
M
Illarramendi
Igor
I
Ferrer-Blasco
Teresa
T
Montés-Micó
Robert
R
D000368:Aged; D001251:Astigmatism / Q000503:physiopathology / Q000601:surgery*; D015350:Contrast Sensitivity / Q000502:physiology; D003315:Cornea / Q000601:surgery*; D019781:Corneal Topography; D005260:Female; D006801:Humans; D007431:Intraoperative Complications; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008297:Male; D018918:Phacoemulsification; D011183:Postoperative Complications; D011446:Prospective Studies; D014792:Visual Acuity