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Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study.

Publication ,  Journal Article
McKnight, CM; Sherwin, JC; Yazar, S; Forward, H; Tan, AX; Hewitt, AW; Pennell, CE; McAllister, IL; Young, TL; Coroneo, MT; Mackey, DA
Published in: Am J Ophthalmol
November 2014

PURPOSE: To determine the association between ocular sun exposure measured by conjunctival ultraviolet (UV) autofluorescence and myopic refractive error in young adults. DESIGN: Cross-sectional study. METHODS: setting: Population-based cohort in Western Australia. study population: Total of 1344 mostly white subjects aged 19-22 years in the Western Australian Pregnancy Cohort (Raine) Eye Health Study. observation procedures: Cycloplegic autorefraction, conjunctival ultraviolet autofluorescence photography, participant questionnaire. main outcome measures: Prevalence of myopic refractive error (spherical equivalent less than -0.50 diopters) and area of conjunctival ultraviolet autofluorescence in mm(2). RESULTS: There was an inverse relationship between myopic refractive error and ocular sun exposure, with more than double the prevalence of myopia in the lowest quartile of conjunctival autofluorescence than the highest quartile (33.0% vs 15.6%). Median area of autofluorescence was significantly lower in myopic than in nonmyopic subjects (31.9 mm(2) vs 47.9 mm(2), P < .001). These differences remained significant after adjustment for age, sex, parental history of myopia, and subject level of education. The use of corrective lenses did not explain the lower conjunctival autofluorescence observed in myopic subjects. CONCLUSIONS: In this young adult population, myopic refractive error was inversely associated with objectively measured ocular sun exposure, even after adjustment for potential confounders. This further supports the inverse association between outdoor activity and myopia.

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Published In

Am J Ophthalmol

DOI

EISSN

1879-1891

Publication Date

November 2014

Volume

158

Issue

5

Start / End Page

1079 / 1085

Location

United States

Related Subject Headings

  • Young Adult
  • Western Australia
  • Sunlight
  • Risk Factors
  • Refraction, Ocular
  • Pregnancy
  • Population Surveillance
  • Ophthalmology & Optometry
  • Myopia
  • Male
 

Citation

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McKnight, C. M., Sherwin, J. C., Yazar, S., Forward, H., Tan, A. X., Hewitt, A. W., … Mackey, D. A. (2014). Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study. Am J Ophthalmol, 158(5), 1079–1085. https://doi.org/10.1016/j.ajo.2014.07.033
McKnight, Charlotte M., Justin C. Sherwin, Seyhan Yazar, Hannah Forward, Alex X. Tan, Alex W. Hewitt, Craig E. Pennell, et al. “Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study.Am J Ophthalmol 158, no. 5 (November 2014): 1079–85. https://doi.org/10.1016/j.ajo.2014.07.033.
McKnight CM, Sherwin JC, Yazar S, Forward H, Tan AX, Hewitt AW, et al. Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study. Am J Ophthalmol. 2014 Nov;158(5):1079–85.
McKnight, Charlotte M., et al. “Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study.Am J Ophthalmol, vol. 158, no. 5, Nov. 2014, pp. 1079–85. Pubmed, doi:10.1016/j.ajo.2014.07.033.
McKnight CM, Sherwin JC, Yazar S, Forward H, Tan AX, Hewitt AW, Pennell CE, McAllister IL, Young TL, Coroneo MT, Mackey DA. Myopia in young adults is inversely related to an objective marker of ocular sun exposure: the Western Australian Raine cohort study. Am J Ophthalmol. 2014 Nov;158(5):1079–1085.
Journal cover image

Published In

Am J Ophthalmol

DOI

EISSN

1879-1891

Publication Date

November 2014

Volume

158

Issue

5

Start / End Page

1079 / 1085

Location

United States

Related Subject Headings

  • Young Adult
  • Western Australia
  • Sunlight
  • Risk Factors
  • Refraction, Ocular
  • Pregnancy
  • Population Surveillance
  • Ophthalmology & Optometry
  • Myopia
  • Male