Volume 32, Issue 6 (September 2021)
Studies in Medical Sciences 2021, 32(6): 448-457 |
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Hadi Ostadimoghaddam 
, Neda Nakhjavanpour * , Abolfazl Payandeh , Mohammad-Reza Mohammad-Reza Sedaghat
, Neda Nakhjavanpour * , Abolfazl Payandeh , Mohammad-Reza Mohammad-Reza Sedaghat
M.Sc. of Optometry, Department of Optometry, Zahedan University of Medical Sciences, Zahedan, Iran (Corresponding Author)
Abstract: (2760 Views)
Background & Aims: Retinal nerve fiber layer thickness is an important factor in the early diagnosis of posterior pole dysfunctions, assessment of treatment effect, and disease progression. The aim of this study was to compare the macular and peripapillary retinal thickness between genders and among refractive error types in healthy subjects. In addition, effective determinants of the thickness were ascertained.
Materials & Methods: This cross-sectional study was conducted on 58 subjects (116 eyes) who were referred to the Toos eye clinic of Mashhad, northeast of Iran, for refractive error surgery and their caregivers in 2014. We used Optical Coherence Tomography for retinal thickness measurements.
Results: The mean age was 26.02±0.42 years. The mean±SD spherical equivalence was estimated to be -2.06 ± 0.36 dioptres, axial length was 23.89 ± 0.14 mm, average peripapillary thickness was 89.91 ± 0.94 μm, average macular thickness was 274.68 ± 1.84 μm, and overall macular volume was 9.89 ± 0.07 mm3. Multiple linear regression modeling indicated that axial length and gender had a significant effect on average macular thickness. Axial length also showed a substantial effect on average peripapillary thickness.
Conclusion: Retinal thickness measurement regardless of refractive error type could lead to bias in disease diagnosis. The results of the present study might be used to enhance the assessment precision of ocular diseases.
Materials & Methods: This cross-sectional study was conducted on 58 subjects (116 eyes) who were referred to the Toos eye clinic of Mashhad, northeast of Iran, for refractive error surgery and their caregivers in 2014. We used Optical Coherence Tomography for retinal thickness measurements.
Results: The mean age was 26.02±0.42 years. The mean±SD spherical equivalence was estimated to be -2.06 ± 0.36 dioptres, axial length was 23.89 ± 0.14 mm, average peripapillary thickness was 89.91 ± 0.94 μm, average macular thickness was 274.68 ± 1.84 μm, and overall macular volume was 9.89 ± 0.07 mm3. Multiple linear regression modeling indicated that axial length and gender had a significant effect on average macular thickness. Axial length also showed a substantial effect on average peripapillary thickness.
Conclusion: Retinal thickness measurement regardless of refractive error type could lead to bias in disease diagnosis. The results of the present study might be used to enhance the assessment precision of ocular diseases.
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