000099349 001__ 99349
000099349 005__ 20230914083325.0
000099349 0247_ $$2doi$$a10.2147/OPTO.S212510
000099349 0248_ $$2sideral$$a122885
000099349 037__ $$aART-2019-122885
000099349 041__ $$aeng
000099349 100__ $$0(orcid)0000-0002-3979-4528$$aRemón, L.$$uUniversidad de Zaragoza
000099349 245__ $$aEffect of cylinder power and axis changes on vision in astigmatic participants: A comment [letter]
000099349 260__ $$c2019
000099349 5060_ $$aAccess copy available to the general public$$fUnrestricted
000099349 5203_ $$aDear editor
We read with interest the article by Sha et al1 in the March 2019 issue. This study evaluated the effects of misalignment axis and undercorrecting cylinder powers on the visual performance of astigmatic people. The aim of this work was mainly to assist eye-care practitioners in reducing the number of toric contact lenses stock-keeping units. The authors analyze the effect of astigmatic undercorrection by 0.25, 0.50 and 0.75 DC, at different amounts of misalignments up to 30°. In this analysis, the effects of cylinder power, cylinder axis and their mutual interaction are analyzed separately. However, it is well known that cylinder power and axis are not independent variables; in fact, astigmatism is a vector magnitude. Several studies2, 4 use vector formalism to quantify the blur strength produced by astigmatism. Even in previous literature, 1 the authors show the power vector components (M, J0, J45) in Table 1, for the different groups in which the sample is divided. ...
000099349 540__ $$9info:eu-repo/semantics/openAccess$$aby-nc$$uhttp://creativecommons.org/licenses/by-nc/3.0/es/
000099349 592__ $$a0.285$$b2019
000099349 593__ $$aOphthalmology$$c2019$$dQ3
000099349 593__ $$aSensory Systems$$c2019$$dQ4
000099349 655_4 $$ainfo:eu-repo/semantics/other$$vinfo:eu-repo/semantics/publishedVersion
000099349 700__ $$aFurlan, W.D.
000099349 7102_ $$12002$$2647$$aUniversidad de Zaragoza$$bDpto. Física Aplicada$$cÁrea Óptica
000099349 773__ $$g11 (2019), 63-64$$tClinical Optometry$$x1179-2752
000099349 8564_ $$s183742$$uhttps://zaguan.unizar.es/record/99349/files/texto_completo.pdf$$yVersión publicada
000099349 8564_ $$s2147196$$uhttps://zaguan.unizar.es/record/99349/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000099349 909CO $$ooai:zaguan.unizar.es:99349$$particulos$$pdriver
000099349 951__ $$a2023-09-13-11:08:25
000099349 980__ $$aARTICLE