L Batres1,2, S Peruzzo1, M Serramito1, G Carracedo3. 1. Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos del Jalon 118, 28032, Madrid, Spain. 2. Ophthalmological Clinic Doctor Lens, Madrid, Spain. 3. Department of Optometry and Vision, Faculty of Optics and Optometry, Complutense University of Madrid, C/Arcos del Jalon 118, 28032, Madrid, Spain. jgcarrac@ucm.es.
Abstract
PURPOSE: To evaluate the changes in the accommodative response and in the corneal and internal spherical aberration during 3 months of wear of orthokeratology lenses from the baseline. METHODS: Fifty children aged 8 to 17 were recruited for a prospective study and were fitted with orthokeratology lenses. Refraction without cycloplegia, high and low uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), accommodation lag, horizontal near phoria without correction, corneal topography, corneal, and total wavefront aberration were performed at baseline, 1 day, 1 week, 1 month, and 3 months. Data were analyzed by Student's t test for related samples, repeated measures ANOVA test, and Pearson correlation test. RESULTS: The spherical equivalent (SE) before and after 3 months was - 3.33 ± 1.60 D and - 0.30 ± 0.46 D, respectively. Accommodation lag was 0.53 ± 0.38 D and 0.20 ± 0.33 D at baseline and at 3 months, respectively. A moderate correlation between lag at the baseline and its change between baseline and the 3-month visit was found (P < 0.05; R = 0.748). The spherical aberration (SA) increased for anterior corneal and total measurement, being statistically significant for all visits (P < 0.05). The internal SA decreased: - 0.105 ± 0.006 at baseline and - 0.196 ± 0.203 at 1 week (P < 0.05). No difference between baseline and the follow-up visits in posterior corneal SA was found (P > 0.05) CONCLUSION: The negative SA of the lens increases during OK treatment compensated for the increase of the anterior corneal surface positive SA, in addition to increasing the accommodative response.
PURPOSE: To evaluate the changes in the accommodative response and in the corneal and internal spherical aberration during 3 months of wear of orthokeratology lenses from the baseline. METHODS: Fifty children aged 8 to 17 were recruited for a prospective study and were fitted with orthokeratology lenses. Refraction without cycloplegia, high and low uncorrected visual acuity (UCVA), best corrected visual acuity (BCVA), accommodation lag, horizontal near phoria without correction, corneal topography, corneal, and total wavefront aberration were performed at baseline, 1 day, 1 week, 1 month, and 3 months. Data were analyzed by Student's t test for related samples, repeated measures ANOVA test, and Pearson correlation test. RESULTS: The spherical equivalent (SE) before and after 3 months was - 3.33 ± 1.60 D and - 0.30 ± 0.46 D, respectively. Accommodation lag was 0.53 ± 0.38 D and 0.20 ± 0.33 D at baseline and at 3 months, respectively. A moderate correlation between lag at the baseline and its change between baseline and the 3-month visit was found (P < 0.05; R = 0.748). The spherical aberration (SA) increased for anterior corneal and total measurement, being statistically significant for all visits (P < 0.05). The internal SA decreased: - 0.105 ± 0.006 at baseline and - 0.196 ± 0.203 at 1 week (P < 0.05). No difference between baseline and the follow-up visits in posterior cornealSA was found (P > 0.05) CONCLUSION: The negative SA of the lens increases during OK treatment compensated for the increase of the anterior corneal surface positive SA, in addition to increasing the accommodative response.
Authors: Christine F Wildsoet; Audrey Chia; Pauline Cho; Jeremy A Guggenheim; Jan Roelof Polling; Scott Read; Padmaja Sankaridurg; Seang-Mei Saw; Klaus Trier; Jeffrey J Walline; Pei-Chang Wu; James S Wolffsohn Journal: Invest Ophthalmol Vis Sci Date: 2019-02-28 Impact factor: 4.799
Authors: Donald O Mutti; Loraine T Sinnott; G Lynn Mitchell; Lisa A Jones-Jordan; Melvin L Moeschberger; Susan A Cotter; Robert N Kleinstein; Ruth E Manny; J Daniel Twelker; Karla Zadnik Journal: Invest Ophthalmol Vis Sci Date: 2011-01-05 Impact factor: 4.799
Authors: Milly S Tedja; Annechien E G Haarman; Magda A Meester-Smoor; Jaakko Kaprio; David A Mackey; Jeremy A Guggenheim; Christopher J Hammond; Virginie J M Verhoeven; Caroline C W Klaver Journal: Invest Ophthalmol Vis Sci Date: 2019-02-28 Impact factor: 4.799