April 2014
Volume 55, Issue 13
ARVO Annual Meeting Abstract  |   April 2014
Corneal Thickness in Individuals with Myopia
Author Affiliations & Notes
  • RAFAEL FREIRE Kobayashi
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Maria Flavia Ribeiro
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Flavio E Hirai
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Eliane Nakano
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Claudia Francesconi
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Mauro Campos
    Ophtalmology, UNIFESP, SAO PAULO, Brazil
  • Footnotes
    Commercial Relationships RAFAEL Kobayashi, None; Maria Flavia Ribeiro, None; Flavio Hirai, None; Eliane Nakano, None; Claudia Francesconi, None; Mauro Campos, None
  • Footnotes
    Support None
Investigative Ophthalmology & Visual Science April 2014, Vol.55, 1538. doi:
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      RAFAEL FREIRE Kobayashi, Maria Flavia Ribeiro, Flavio E Hirai, Eliane Nakano, Claudia Francesconi, Mauro Campos; Corneal Thickness in Individuals with Myopia. Invest. Ophthalmol. Vis. Sci. 2014;55(13):1538.

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      © ARVO (1962-2015); The Authors (2016-present)

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To evaluate corneal thickness across corneal meridians in individuals with myopia


One hundred and fifteen individuals had both eyes evaluated. Examinations included refraction and corneal thickness measured by Pentacam and Oculyzer. Myopes were categorized as low (spherical equivalent between zero and -3.00); moderate (-3.00 to -6.00); and severe (higher than -6.00). Corneal thickness were evaluated 2, 4 and 6mm from the central corneal thickness in the axis of 0,45,90,135,180, 225, 270 and 315 degrees. (Figure 1) Corneal thickness were compared across groups and corneal meridians with repeated measures ANOVA to adjust for the correlation between eyes. All p-values < 0.05 were considered statistically significant.


There is no statistically significant difference in corneal thickness between low, moderate and severe myopes in each axis. Corneal thickness on the inferior meridians (225, 270 and 315 degrees) are thinner compared to the superior meridians (45, 90 and 135 degrees) for low and moderate myopes (p<0,05).


Corneal thickness did not differ between different levels of myopia. However, the pachymetric map showed thinner corneas in the inferior meridians when compared to pachimetry in the upper half of the cornea.

Keywords: 678 refractive surgery • 676 refraction • 682 refractive surgery: other technologies  

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