The Prevalence of Accommodative Insufficiency among Students of an Iranian Medical School
Journal of Ophthalmic and Optometric Sciences,
Vol. 1 No. 4 (2017),
24 June 2017
,
Page 49-55
https://doi.org/10.22037/joos.v1i4.27815
Abstract
Purpose: To evaluate the prevalence of accommodative insufficiency in a student population from Iran.
Patients and Methods: This cross-sectional study was performed on 596 eyes from 298 participants (157 males, 141 females) in age range of 18 to 29 years among students from Iran University of Medical Sciences, Tehran, Iran, between 2014 and 2015. The amplitude of accommodation among volunteers in this study was evaluated using the Donder's push up method. Then, the minimum normal amplitude of accommodation for a given age was estimated by Hofstetter formula (15 - 0.25 * age in years), and then the prevalence of accommodative insufficiency among the study population was determined according to this calculations.
Results: We found the prevalence of accommodative insufficiency to be 7.2% in the study population. The prevalence of accommodative insufficiency was 4.1% and 7.25% among males and females respectively (P < 0.001).
Conclusion: The prevalence of accommodative insufficiency in our study population was less than previous studies among children, which might be explained by the role of natural selection (people with accommodative disorders might have less chance of excelling in education and entering higher education institutes than patients without this disorder). We also found a statistically significant higher prevalence of accommodative insufficiency among female college aged students compared to male students.
Keywords: Accommodation, insufficiency, prevalence, eye, Iran.
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References
García-Muñoz Á, Carbonell-Bonete S, Cacho-Martínez P. Symptomatology associated with accommodative and binocular vision anomalies. J Optom. 2014;7(4):178-92.
Currie DC, Manny RE. The development of accommodation. Vision Res. 1997;37(11):1525-33.
Mazow ML, France TD, Finkleman S, Frank J, Jenkins P. Acute accommodative and convergence insufficiency. Trans Am Ophthalmol Soc. 1989;87:158-68; discussion 168-73.
Cacho P, García A, Lara F, Seguí MM. Diagnostic signs of accommodative insufficiency. Optom Vis Sci. 2002;79(9):614-20.
Cacho-Martínez P, Cantó-Cerdán M, Carbonell-Bonete S, García-Muñoz Á. Characterization of Visual Symptomatology Associated with Refractive, Accommodative, and Binocular Anomalies. J Ophthalmol. 2015;2015:895803.
Singman E, Matta N, Tian J, Silbert D. Association between accommodative amplitudes and amblyopia. Strabismus. 2013;21(2):137-9.
Cooper J, Pollak GJ, Ciuffreda KJ, Kruger P, Feldman J. Accommodative and vergence findings in ocular myasthenia: a case analysis. J Neuroophthalmol. 2000;20(1):5-11.
Daum KM. Accommodative insufficiency. Am J Optom Physiol Opt. 1983;60(5):352-9.
Borsting E, Rouse MW, Deland PN, Hovett S, Kimura D, Park M et al. Association of symptoms and convergence and accommodative insufficiency in school-agechildren. Optometry. 2003;74(1):25-34.
Shin HS, Park SC, Park CM. Relationship between accommodative and vergence dysfunctions and academic achievement for primary school children. Ophthalmic Physiol Opt. 2009;29(6):615-24.
Grisham D, Powers M, Riles P. Visual skills of poor readers in high school. Optometry. 2007;78(10):542-9.
Cumberland PM, Pathai S, Rahi JS; Millennium Cohort Study Child Health Group. Prevalence of eye disease in early childhood and associated factors: findings from the millennium cohort study. Ophthalmology. 2010;117(11):2184-90.e1-3.
Ganz ML, Xuan Z, Hunter DG. Prevalence and correlates of children's diagnosed eye and vision conditions. Ophthalmology. 2006;113(12):2298-306.
Hokoda SC. General binocular dysfunctions in an urban optometry clinic. J Am Optom Assoc. 1985;56(7):560-2.
Scheiman M, Gallaway M, Coulter R, Reinstein F, Ciner E, Herzberg C, Parisi M. Prevalence of vision and ocular disease conditions in a clinical pediatric population. J Am Optom Assoc. 1996;67(4):193-202.
Rouse MW, Hyman L, Hussein M, Solan H. Frequency of convergence insufficiency in optometry clinic settings. Convergence Insufficiency and Reading Study (CIRS) Group. Optom Vis Sci. 1998;75(2):88-96.
Lara F, Cacho P, García A, Megías R. General binocular disorders: prevalence in a clinic population. Ophthalmic Physiol Opt. 2001;21(1):70-4.
Porcar E, Martinez-Palomera A. Prevalence of general binocular dysfunctions in a population of university students. Optom Vis Sci. 1997;74(2):111-3.
García A, Cacho P, Lara F. Evaluating relative accommodations in general binocular dysfunctions. Optom Vis Sci. 2002;79(12):779-87.
García A, Cacho P, Lara F, Megías R. he relation between accommodative facility and general binocular dysfunction. Ophthalmic Physiol Opt. 2000;20(2):98-104.
Buzzelli AR. Stereopsis, accommodative and vergence facility: do they relate to dyslexia? Optom Vis Sci. 1991;68(11):842-6.
Hoffman LG. Incidence of vision difficulties in children with learning disabilities. J Am Optom Assoc. 1980;51(5):447-51.
Maples WC. Visual factors that significantly impact academic performance. Optometry. 2003;74(1):35-49.
Evans BJ. The underachieving child. Ophthalmic Physiol Opt. 1998;18(2):153-9.
Evans BJ, Drasdo N, Richards IL. Dyslexia: the link with visual deficits. Ophthalmic Physiol Opt. 1996;16(1):3-10.
Motsch S1, Mühlendyck H. Frequency of reading disability caused by ocular problems in 9- and 10-year-old children in a small town. Strabismus. 2000;8(4):283-5.
Hashemi H, Khabazkhoob M, Nabovati P, Shahraki FA, Ostadimoghaddam H, Faghihi M, et al. Accommodative insufficiency in a student population in Iran. J Optom. 2019;12(3):161-7.
Rouse MW, Borsting E, Hyman L, Hussein M, Cotter SA, Flynn M, Frequency of convergence insufficiency among fifth and sixth graders. The Convergence Insufficiency and Reading Study (CIRS) group. Optom Vis Sci. 1999;76(9):643-9.
García-Muñoz Á, Carbonell-Bonete S, Cantó-Cerdán M, Cacho-Martínez P. Accommodative and binocular dysfunctions: prevalence in a randomised sample of university students. Clin Exp Optom. 2016;99(4):313-21.
Davis AL, Harvey EM, Twelker JD, Miller JM, Leonard-Green T, Campus I. Convergence Insufficiency, Accommodative Insufficiency, Visual Symptoms, and Astigmatism in Tohono O'odham Students. J Ophthalmol. 2016;2016:6963976.
Nunes AF, Monteiro PML, Ferreira FBP, Nunes AS. Convergence insufficiency and accommodative insufficiency in children. BMC Ophthalmol. 2019;19(1):58.
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