000144733 001__ 144733
000144733 005__ 20241220120716.0
000144733 0247_ $$2doi$$a10.1080/02713683.2024.2378009
000144733 0248_ $$2sideral$$a139495
000144733 037__ $$aART-2024-139495
000144733 041__ $$aeng
000144733 100__ $$aMechó-García, María
000144733 245__ $$aThe influence of accommodative demand on ocular aberrations: a study of Zernike coefficients repeatability and variability
000144733 260__ $$c2024
000144733 5060_ $$aAccess copy available to the general public$$fUnrestricted
000144733 5203_ $$aPurpose
To evaluate the repeatability of the Zernike coefficients in healthy eyes when monocular accommodation was stimulated at different vergences demands.
Methods
A total of 36 right eyes from healthy volunteers were prospectively and consecutively recruited for this study. Wavefront aberrometry was conducted to objectively characterize the ocular optical quality during accommodation, from the individual’s far point to a 5 D accommodation demand in steps of 0.5 D. The repeatability of Zernike coefficients up to the fourth order was assessed by calculating the within-eye repeatability (Sw), the coefficient of repeatability (CR), the coefficient of variation (CV), and the intraclass correlation coefficient (ICC) as an indicator of measurement reliability.
Results
Correlation among repeated measurements showed high reliability (ICC > 0.513) for all parameters measured except some fourth-order Zernike coefficients, C(4, −4) (ICC < 0.766), C(4, −2) (ICC < 0.875), C(4, 2) (ICC < 0.778) and C(4, 4) (ICC < 0.811). Greater repeatability and less variability were obtained for high-order Zernike coefficients (CR < 0.154), although an increase in CR in the coefficients analyzed was observed with increasing accommodative demand. No clear trend was evident in CV; however, it was observed that the low-order Zernike coefficients exhibit lower CV (CV < 1.93) compared to the high-order Zernike coefficients (CV > 0).
Conclusions
The reliability of Zernike coefficients up to the fourth order in healthy young individuals demonstrated a strong consistency in measuring terms up to the fourth order, with more variability observed for high-order terms. The Zernike coefficients up to the third order exhibited the highest level of repeatability.
000144733 536__ $$9info:eu-repo/grantAgreement/EC/H2020/956720/EU/Opto-Biomechanical Eye Research Network/OBERON$$9This project has received funding from the European Union’s Horizon 2020 research and innovation program under grant agreement No H2020 956720-OBERON
000144733 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000144733 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000144733 700__ $$0(orcid)0009-0006-7694-8086$$aArcas-Carbonell, María
000144733 700__ $$0(orcid)0000-0003-2710-1875$$aOrduna-Hospital, Elvira$$uUniversidad de Zaragoza
000144733 700__ $$0(orcid)0000-0002-5621-1937$$aSánchez-Cano, Ana$$uUniversidad de Zaragoza
000144733 700__ $$aGonzález-Méijome, José Manuel
000144733 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000144733 773__ $$g49, 12 (2024), 1237-1246$$pCurr. eye res.$$tCURRENT EYE RESEARCH$$x0271-3683
000144733 8564_ $$s1682137$$uhttps://zaguan.unizar.es/record/144733/files/texto_completo.pdf$$yVersión publicada
000144733 8564_ $$s1130316$$uhttps://zaguan.unizar.es/record/144733/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000144733 909CO $$ooai:zaguan.unizar.es:144733$$particulos$$pdriver
000144733 951__ $$a2024-12-20-12:05:32
000144733 980__ $$aARTICLE