Influence of intraocular lens tilt and decentration on wavefront aberrations.
OBJECTIVE
To investigate the influence of intraocular lens (IOL) tilt and decentration on higher-order aberrations (HOAs) using wavefront analysis.


METHODS
Department of Ophthalmology, Nara Medical University, Nara, Japan.


METHODS
Forty eyes of 40 patients with a 5.5 mm optic, foldable acrylic IOL were examined 4 to 48 months postoperatively. Ocular wavefront aberrations of the central 4.0 mm aperture diameter were measured using a Hartmann-Shack aberrometer. Higher-order aberrations from the 3rd to 4th order were calculated using Zernike polynomials. The relationship between IOL tilt and decentration, measured with a Scheimpflug camera, and ocular HOAs were investigated.


RESULTS
The correlation between IOL tilt and coma-like aberrations was significant (r=0.431, Spearman rank correlation coefficient; P=.007). However, the correlation between IOL tilt and the spherical-like and total aberrations was not significant (P>.05), nor was the correlation between IOL decentration and coma-like, spherical-like, and total aberrations (P>.05).


CONCLUSIONS
Intraocular lens tilt influenced ocular coma-like aberrations. The quality of the retinal image may improve by reducing IOL tilt.
Taketani
Futoshi
F
Department of Ophthalmology, Nara Medical University, Nara, Japan. ftaketan@naramed-u.ac.jp
Matuura
Toyoaki
T
Yukawa
Eiichi
E
Hara
Yoshiaki
Y
D000368:Aged; D000369:Aged, 80 and over; D019781:Corneal Topography; D005548:Foreign-Body Migration / Q000503:physiopathology*; D006801:Humans; D019654:Lens Implantation, Intraocular; D007910:Lenses, Intraocular; D008875:Middle Aged; D018918:Phacoemulsification; D010781:Photography / Q000379:methods; D012030:Refractive Errors / Q000503:physiopathology*; D012160:Retina / Q000502:physiology; D014792:Visual Acuity / Q000502:physiology