Premium
Comparability and reproducibility of four wavefront aberrometers for measuring lower and higher order aberrations in pseudophakic eyes
Author(s) -
Nguyen P.M.,
Hirnschall N.,
Doeller B.,
Schuschitz S.,
Varsits R.,
Findl O.
Publication year - 2015
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2015.0558
Subject(s) - reproducibility , retinoscopy , intraocular lenses , ophthalmology , zernike polynomials , wavefront , aberrations of the eye , optometry , mathematics , medicine , optics , intraocular lens , visual acuity , physics , refractive error , statistics
Purpose To compare measurements of lower and higher order aberrations ( HOA ) obtained with four different wavefront aberrometers and to assess their reproducibility. Methods This prospective study included pseudophakic otherwise healthy patients. Four wavefront aberrometers were compared. Three of the aberrometers in this study are combined with coneal topographers. Two of the devices use a Hartmann‐Shack sensor ( WASCA , Carl Zeiss Meditec AG ; iD esign Advanced WaveSan aberrometer, Abbott Medical Optics), one device works on the basis of ray tracing ( iT race, Tracey Technologies), one device utilizes automated retinoscopy ( OPD ‐Scan III ; NIDEK Co. Ltd.). All patients are measured with an autorefractometer (Topcon, Japan) and also a subjective refraction has been performed. In addition a Purkinjemeter measurement has been done. Results In total, 51 eyes of 51 patients were included. No patient was lost to follow‐up. Mean difference concerning root mean square of all higher order aberrations was 0.013 µm between Wasca and iD esign and 0.113 µm between Wasca and OPD , respectively. Reproducibility was found to be between 0.09 µm ( SD :0.06) ( iD esign) and 0.41 µm ( SD : 0.12) ( iT race). Details for higher order aberrations will be presented at the meeting. Conclusions Feasibility was found to be excellent for Wasca and iD esign and was high for iT race but for the OPD Scan there was a flat learning curve. Reproducibility was found to be good for all devices but slightly weaker for the iT race device.