Prevalence and Progression of Ametropias in Medical Students

  • Gustavo Costa Santos MD, Disciplina de Oftalmologia, Centro Universitário ABC, Santo André, Brasil.
  • Rafael Cunha de Almeida MD, MSc, Disciplina de Oftalmologia, Centro Universitário ABC, Santo André, Brasil
  • Willany Veloso Reinaldo MD, Disciplina de Oftalmologia, Centro Universitário ABC, Santo André, Brasil
  • Fernando Rocha Oliveira MD, Laboratório de Delineamento de Estudos e escrita científica Centro Universitário ABC, Santo André, Brasil.
  • Shaun Schofield MD, Utah Valley University, Orem, United State of America, United States
  • Roberto Conde Santos MD, Universidade Federal de Alfenas, Alfenas, Brasil
  • Glaucia Luciano da Veiga MSc, PhD, Laboratório de Análises Clínicas, Centro Universitário ABC, Santo André, Brasil
  • Fernando Luiz Affonso Fonseca MSc, PhD, Laboratório de Análises Clínicas, Centro Universitário ABC, Santo André, Brasil
  • Vagner Loduca Lima MD, PhD, Disciplina de Oftalmologia, Centro Universitário ABC, Santo André, Brasil
  • Renato Galão Cerquinho Leça MD, PhD, Disciplina de Oftalmologia, Centro Universitário ABC, Santo André, Brasil
Keywords: Medical students, Brazil, Refractive errors


Background: Uncorrected refractive errors (Myopia, Hyperopia and Astigmatism) are one of the main causes of poor vision, attributing to 43% of vision deficiencies. Myopia is the most common visual disorder in the world and can progress up until the age of 20-25, when many people are in university. The etiological factors that cause myopia are still unclear and deserve to be studied. Our aim was to identify the prevalence of ametropias and self-perception of ophthalmic health in medical students at the Centro Universitário Saúde ABC/FMABC.

Methods: This is a cross-sectional study with data collected at Centro Universitário Saúde ABC/FMABC from medical students. A total of 232 students participated in the survey, from the 1st to the 4th year of study. Data was obtained through a questionnaire, which evaluates ophthalmologic health, ametropia, and self-perception.

Results: It was observed that 74.57% of the students had some type of ametropia, myopia being the most recurrent (59.05%). The study shows significant data of an increase in the grade of students from 1st to 4th grade throughout college. It was observed that the average daily study time of the students was 9.68 hours and abuse in the use of electronic devices.

Conclusion: This study presented a high prevalence of ametropias among medical students at the Centro Universitário ABC/FMABC, in addition to a high prevalence of multifactorial myopia and an increased need to update their diopters (degrees) during the course of university.


Júnior A, Pinto G, Oliveira D, Holzmeister D, Portes A, Neurauter R. Prevalence of ametropias and ophthalmopathies in preschool and school children in favelas in Alto da Boa Vista, Rio de Janeiro, Brazil. Rev Bras Oftalmol. 2007 Oct; 66(5): 304-308.

World Health Organization. Global magnitude of visual impairment caused by uncorrected refractive errors in 2004 World Health Organization - WHO. Available from: Last updated August 20, 2020; cited January 03, 2021.

Schiefer U, Kraus C, Baumbach P, Ungewiß J, Michels R. Refractive errors. Dtsch Arztebl Int. Oct 2016;113(41):693-702.

Holden BA, Fricke TR, Wilson DA, et al. Global Prevalence of Myopia and High Myopia and Temporal Trends from 2000 through 2050. Ophthalmology. May 2016;123(5):1036-42.

Wong TY, Ferreira A, Hughes R, Carter G, Mitchell P. Epidemiology and disease burden of pathologic myopia and myopic choroidal neovascularization: an evidence-based systematic review. Am J Ophthalmol. Jan 2014;157(1):9-25.e12.

Holden BA, Wilson DA, Jong M, et al. Myopia: a growing global problem with sight-threatening complications. Community Eye Health. 2015;28(90):35.

Alsaif BA, Aljindan MY, Alrammah HM, Almulla MO, Alshahrani SS. Refractive errors among Saudi college students and associated risk factors. Clin Ophthalmol. 2019 Feb 27;13:437-443.

Lin Z, Vasudevan B, Mao GY, et al. The influence of near work on myopic refractive change in urban students in Beijing: a three-year follow-up report. Graefes Arch Clin Exp Ophthalmol. Nov 2016;254(11):2247-2255.

Muhamedagic L, Muhamedagic B, Halilovic EA, Halimic JA, Stankovic A, Muracevic B. Relation between near work and myopia progression in student population. Mater Sociomed. Apr 2014;26(2):100-3.

Mirshahi A, Ponto KA, Hoehn R, et al. Myopia and level of education: results from the Gutenberg Health Study. Ophthalmology. Oct 2014;121(10):2047-52.

Cumberland PM, Chianca A, Rahi JS, Consortium UBEaV. Accuracy and Utility of Self-report of Refractive Error. JAMA Ophthalmol. Jul 2016;134(7):794-801.

Hashemi H, Fotouhi A, Yekta A, Pakzad R, Ostadimoghaddam H, Khabazkhoob M. Global and regional estimates of prevalence of refractive errors: Systematic review and meta-analysis. J Curr Ophthalmol. 2017 Sep 27;30(1):3-22.

Sherwin JC, Mackey DA. Update on the epidemiology and genetics of myopic refractive error. Expert Rev Ophthalmol. 2013;8(1):63-87.

Vitale S, Sperduto RD, Ferris FL. Increased prevalence of myopia in the United States between 1971-1972 and 1999-2004. Arch Ophthalmol. Dec 2009;127(12):1632-9.

Ferraz FH, Corrente JE, Opromolla P, Padovani CR, Schellini SA. Refractive errors in a Brazilian population: age and sex distribution. Ophthalmic Physiol Opt. Jan 2015;35(1):19-27.

Pan CW, Ramamurthy D, Saw SM. Worldwide prevalence and risk factors for myopia. Ophthalmic Physiol Opt. Jan 2012;32(1):3-16.

Almalki NM, Alrajhi AA, Alharbi AH, Mahfouz MS. Prevalence of Refractive Errors and its Associated Risk Factors among Medical Students of Jazan University, Saudi Arabia: A Cross-sectional Study. Middle East Afr J Ophthalmol. 2021 Jan 19;27(4):210-217.

Khader YS, Batayha WQ, Abdul-Aziz SM, Al-Shiekh-Khalil MI. Prevalence and risk indicators of myopia among schoolchildren in Amman, Jordan. East Mediterr Health J. 2006 May-Jul 2006;12(3-4):434-9.

Lee YY, Lo CT, Sheu SJ, Lin JL. What factors are associated with myopia in young adults? A survey study in Taiwan Military Conscripts. Invest Ophthalmol Vis Sci. Feb 2013;54(2):1026-33.

Konstantopoulos A, Yadegarfar G, Elgohary M. Near work, education, family history, and myopia in Greek conscripts. Eye (Lond). Apr 2008;22(4):542-6.

Wu HM, Seet B, Yap EP, Saw SM, Lim TH, Chia KS. Does education explain ethnic differences in myopia prevalence? A population-based study of young adult males in Singapore. Optom Vis Sci. Apr 2001;78(4):234-9.

Ip JM, Huynh SC, Robaei D, et al. Ethnic differences in the impact of parental myopia: findings from a population-based study of 12-year-old Australian children. Invest Ophthalmol Vis Sci. Jun 2007;48(6):2520-8.

Victor G, Urbano A, Marçal S, et al. [First Brazilian refractive surgery survey]. Arq Bras Oftalmol. 2005 Nov-Dec 2005;68(6):727-33.

How to Cite
Santos, G. C., Almeida, R. C. de, Reinaldo, W. V., Rocha Oliveira, F., Schofield, S., Santos, R. C., da Veiga, G. L., Fonseca, F. L. A., Lima, V. L., & Leça, R. G. C. (2021). Prevalence and Progression of Ametropias in Medical Students. International Journal of Medical Students, 9(2), 112-116.
Original Article