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Non-invasive measurements of the dynamic changes in the ciliary muscle, crystalline lens morphology, and anterior chamber during accommodation with a high-resolution OCT.
Graefes Arch Clin Exp Ophthalmol. 2017 Jul; 255(7):1385-1394.GA

Abstract

PURPOSE

The purpose of the study was to assess non-invasively the changes in the anterior chamber eye, crystalline lens morphology, and ciliary muscle during accommodation by means of an anterior chamber optical coherence tomographer (OCT), and correlate them with vergence.

METHODS

Twenty-five eyes of twenty-five healthy subjects, whose mean age was 29.9±7.1 years, were included and measured with an anterior chamber OCT. The central corneal thickness (CCT), anterior chamber depth (ACD), anterior crystalline lens radius of curvature (ALRC), crystalline lens thickness (CLT), and ciliary muscle area (CMA) were measured for each participant at 0, -1, -2, and -3 D of target vergence. A linear model was used to assess the correlation of each eye parameter with the vergence demand.

RESULTS

The mean CCT showed no change for all the accommodative stimuli. The mean ACD and ALRC decreased with the vergence, about 4.5 and 30 % at -3 D, respectively. On the contrary, the CLT and CMA showed an opposite tendency, where the mean CLT was increased by 4.0 % and the mean CMA was done by 26% at -3 D. Statistical significant differences (p < 0.001) were obtained among all vergences for each eye metric, except for the CCT (p = 0.76).

CONCLUSION

The ACD and ALRC decreased about 2 and 10 % per dioptre of accommodation, respectively; whereas the CLT and CMA increased about 2 and 9 %, respectively. These results add knowledge regarding the understanding of accommodation and give new perspectives for biomechanics and biometry.

Authors+Show Affiliations

Department of Optics and Optometry and Vision Sciences, University of Valencia, C/ Dr Moliner, 50, 46100, Burjassot, Spain.Department of Optics and Optometry and Vision Sciences, University of Valencia, C/ Dr Moliner, 50, 46100, Burjassot, Spain. alberto.vicent@uv.es.Department of Optics and Optometry and Vision Sciences, University of Valencia, C/ Dr Moliner, 50, 46100, Burjassot, Spain.Department of Optics and Optometry and Vision Sciences, University of Valencia, C/ Dr Moliner, 50, 46100, Burjassot, Spain.Department of Optics and Optometry and Vision Sciences, University of Valencia, C/ Dr Moliner, 50, 46100, Burjassot, Spain.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

28424868

Citation

Esteve-Taboada, José J., et al. "Non-invasive Measurements of the Dynamic Changes in the Ciliary Muscle, Crystalline Lens Morphology, and Anterior Chamber During Accommodation With a High-resolution OCT." Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie, vol. 255, no. 7, 2017, pp. 1385-1394.
Esteve-Taboada JJ, Domínguez-Vicent A, Monsálvez-Romín D, et al. Non-invasive measurements of the dynamic changes in the ciliary muscle, crystalline lens morphology, and anterior chamber during accommodation with a high-resolution OCT. Graefes Arch Clin Exp Ophthalmol. 2017;255(7):1385-1394.
Esteve-Taboada, J. J., Domínguez-Vicent, A., Monsálvez-Romín, D., Del Águila-Carrasco, A. J., & Montés-Micó, R. (2017). Non-invasive measurements of the dynamic changes in the ciliary muscle, crystalline lens morphology, and anterior chamber during accommodation with a high-resolution OCT. Graefe's Archive for Clinical and Experimental Ophthalmology = Albrecht Von Graefes Archiv Fur Klinische Und Experimentelle Ophthalmologie, 255(7), 1385-1394. https://doi.org/10.1007/s00417-017-3663-4
Esteve-Taboada JJ, et al. Non-invasive Measurements of the Dynamic Changes in the Ciliary Muscle, Crystalline Lens Morphology, and Anterior Chamber During Accommodation With a High-resolution OCT. Graefes Arch Clin Exp Ophthalmol. 2017;255(7):1385-1394. PubMed PMID: 28424868.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Non-invasive measurements of the dynamic changes in the ciliary muscle, crystalline lens morphology, and anterior chamber during accommodation with a high-resolution OCT. AU - Esteve-Taboada,José J, AU - Domínguez-Vicent,Alberto, AU - Monsálvez-Romín,Daniel, AU - Del Águila-Carrasco,Antonio J, AU - Montés-Micó,Robert, Y1 - 2017/04/20/ PY - 2016/12/30/received PY - 2017/03/27/accepted PY - 2017/03/22/revised PY - 2017/4/21/pubmed PY - 2017/11/29/medline PY - 2017/4/21/entrez KW - Accommodation KW - Ciliary muscle KW - Lens morphology SP - 1385 EP - 1394 JF - Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie JO - Graefes Arch. Clin. Exp. Ophthalmol. VL - 255 IS - 7 N2 - PURPOSE: The purpose of the study was to assess non-invasively the changes in the anterior chamber eye, crystalline lens morphology, and ciliary muscle during accommodation by means of an anterior chamber optical coherence tomographer (OCT), and correlate them with vergence. METHODS: Twenty-five eyes of twenty-five healthy subjects, whose mean age was 29.9±7.1 years, were included and measured with an anterior chamber OCT. The central corneal thickness (CCT), anterior chamber depth (ACD), anterior crystalline lens radius of curvature (ALRC), crystalline lens thickness (CLT), and ciliary muscle area (CMA) were measured for each participant at 0, -1, -2, and -3 D of target vergence. A linear model was used to assess the correlation of each eye parameter with the vergence demand. RESULTS: The mean CCT showed no change for all the accommodative stimuli. The mean ACD and ALRC decreased with the vergence, about 4.5 and 30 % at -3 D, respectively. On the contrary, the CLT and CMA showed an opposite tendency, where the mean CLT was increased by 4.0 % and the mean CMA was done by 26% at -3 D. Statistical significant differences (p < 0.001) were obtained among all vergences for each eye metric, except for the CCT (p = 0.76). CONCLUSION: The ACD and ALRC decreased about 2 and 10 % per dioptre of accommodation, respectively; whereas the CLT and CMA increased about 2 and 9 %, respectively. These results add knowledge regarding the understanding of accommodation and give new perspectives for biomechanics and biometry. SN - 1435-702X UR - https://www.unboundmedicine.com/medline/citation/28424868/Non_invasive_measurements_of_the_dynamic_changes_in_the_ciliary_muscle_crystalline_lens_morphology_and_anterior_chamber_during_accommodation_with_a_high_resolution_OCT_ L2 - https://dx.doi.org/10.1007/s00417-017-3663-4 DB - PRIME DP - Unbound Medicine ER -