First Author: A.VARAVKA RUSSIAN FEDERATION
Co Author(s): A. KACHANOV L. BALASHEVICH
Purpose:
To investigate the influence of intraocular lens (IOL) decentration on higher-order aberrations (HOAs) using wavefront Hartmann-Shack analysis.
Setting:
: Svyatoslav Fyodorov "Eye Microsurgery Clinic", St.-Petersburg Branch, 21 Yaroslav Gashek Str., St.-Petersburg, 192283, Russia.
Methods:
All ophthalmic investigations were performed including WASCA and CRS-Master aberrometry (“Carl Zeiss Meditec”) and Pentacam (“OCULUS”) system. Ocular wavefront aberrations were measured in 30 eyes with a different types of IOL using a Hartmann-Shack aberrometer. Higher-order aberrations from the 3rd to 4th order were calculated using Zernike polynomials. The relationship between IOL decentration (incl. dislocation) and ocular HOAs were investigated.
Results:
We revealed HOAs (especially total, spherical-like and mild positive vertical coma) increasing in eyes with IOL decentration (incl. IOL dislocation). The correlation between IOL decentration and total, spherical-like and coma-like aberrations was significant (Spearman rank correlation coefficient r=0.580,). However, the accuracy of IOL decentration aberrometry depends of the lens capsul opacification, secondary cataract and the level of IOL decentration.
Conclusions:
IOL decetration influenced ocular total, spherical-like and coma-like aberrations, /especially vertical coma (Zernike polinomia Z (3,1)/ in Hartmann-Shack aberrometer.
Financial Disclosure:
No
