Accommodation, refraction and cycloplegia
a review
DOI:
https://doi.org/10.70313/2718.7446.v16.n02.222Keywords:
accommodation, refraction, cycloplegia, myopia, hyperopia, presbyopiaAbstract
Accommodation is a type of reflex mediated by many cells and is thus called synkinesis. It is involuntary and produced by the fact that the retina is able to detect the plane of the image by computing the contrast sensitivity of the different wavelengths of the cones for red and blue. Since this involuntary synkinesia is associated with the triad Accommodation + Convergence + Myosis, it is always present when refracting subjectively (or when performing retinoscopy or automatic autorrefractometry), and must be taken into account by performing cycloplegia after all the subjective tests of spectacles and phoria have been tried, both monocularly and binocularly, before prescribing glasses, drops or surgery, according to the best medical criteria to benefit the patient. In this paper we review current concepts on the subject and point out their importance in the context of medical care of visual health, both in school children and in adults, whether myopic or hyperopic. All these aspects show us that refractive problems are now currently considered conditions for medical treatment.
References
Barraquer R. Mecanismos de acomodación del ojo humano. En: Arias Puente A (ed.). Cirugía de la presbicia. Madrid: Sociedad Española de Cirugía Ocular Implanto-Refractiva (SECOIR), 2010.
Maceo BM, Manns F, Borja D et al. Contribution of the crystalline lens gradient refractive index to the accommodation amplitude in non-human primates: in vitro studies. J Vis 2011; 11: 23.
Iribarren R. Crystalline lens and refractive development. Prog Retin Eye Res 2015; 47: 86-106.
Truscott RJ. Presbyopia: emerging from a blur towards an understanding of the molecular basis for this most common eye condition. Exp Eye Res 2009; 88: 241-247.
Panorgias A, Aigbe S, Jeong E et al. Retinal responses to simulated optical blur using a novel dead leaves ERG stimulus. Invest Ophthalmol Vis Sci 2021; 62: 1.
Schaeffel F, Glasser A, Howland HC. Accommodation, refractive error and eye growth in chickens. Vision Res 1988; 28: 639-657.
Swiatczak B, Schaeffel F. Emmetropic, but not myopic human eyes distinguish positive defocus from calculated blur. Invest Ophthalmol Vis Sci 2021; 62: 14.
Schaeffel F. Functional changes in the myopic retina interfere with emmetropization. En: Ohio State University. College of Optometry. Richard and Leonora Hill Lecture Series, 2023. Disponible en: https://www.youtube.com/watch?v=OY5aYOzPmPc
Rozema J, Dankert S, Iribarren R. Emmetropization and non-myopic eye growth. Surv Ophthalmol 2023; en prensa.
Schaeffel F, Weiss S, Seidel J. How good is the match between the plane of the text and the plane of focus during reading? Ophthalmic Physiol Opt 1999; 19: 180-192.
Seidemann A, Schaeffel F. An evaluation of the lag of accommodation using photorefraction. Vision Res 2003; 43: 419-430.
Morgan IG, Iribarren R, Fotouhi A, Grzybowski A. Cycloplegic refraction is the gold standard for epidemiological studies. Acta Ophthalmol 2015; 93: 581-585.
Jacobs DS, Afshari NA, Bishop RJ et al. Refractive errors. San Francisco: American Academy of Ophthalmology, 2022. (Preferred practice pattern).
Renna A, Alió JL, Vejarano LF. Pharmacological treatments of presbyopia: a review of modern perspectives. Eye Vis (Lond) 2017; 4: 3.
Orman B, Benozzi G. Pharmacological treatments for presbyopia. Drugs Aging 2023; 40: 105-116.
Vejarano, F, Alió J, Iribarren R. Review of pharmacological treatments for presbyopia. Curr Ophthalmol Rep 2023; 11: 13-19.
Charman WN, Radhakrishnan H. Peripheral refraction and the development of refractive error: a review. Ophthalmic Physiol Opt 2010; 30: 321-238.
Holden BA, Fricke TR, Wilson DA et al. Global prevalence of myopia and high myopia and temporal trends from 2000 through 2050. Ophthalmology 2016; 123: 1036-1042.
De Tomas M, Kotlik C, Szeps A et al. Nuevos anteojos para control de la miopía. Oftalmol Clin Exp 2022; 15: e240-e243.
Beasley IG, Davies LN, Logan NS. The effect of peripheral defocus on axial growth and modulation of refractive error in hyperopes. Ophthalmic Physiol Opt 2022; 42: 534-544.
Bouman MA, Van Den Brink G. On night myopia. Ophthalmologica 1952; 123: 100-113.
Leibowitz HW, Owens DA. Night myopia and the intermediate dark focus of accommodation. J Opt Soc Am 1975; 65: 1121-1128.
Swiatczak B, Schaeffel F. Myopia: why the retina stops inhibiting eye growth. Sci Rep 2022; 12: 21704.
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