Original Research

Retinal thickness in black and Indian myopic students at the University of KwaZulu-Natal

Chanel Murugan, Bomikazi Z. Golodza, Kaveshni Pillay, Brightness N. Mthembu, Praneal Singh, Sibusiso K. Maseko, Nishanee Rampersad, Siddeeqa Jhetam
African Vision and Eye Health | Vol 74, No 1 | a300 | DOI: https://doi.org/10.4102/aveh.v74i1.300 | © 2015 Chanel Murugan, Bomikazi Z. Golodza, Kaveshni Pillay, Brightness N. Mthembu, Praneal Singh, Sibusiso K. Maseko, Nishanee Rampersad, Siddeeqa Jhetam | This work is licensed under CC Attribution 4.0
Submitted: 26 February 2015 | Published: 17 September 2015

About the author(s)

Chanel Murugan, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Bomikazi Z. Golodza, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Kaveshni Pillay, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Brightness N. Mthembu, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Praneal Singh, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Sibusiso K. Maseko, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Nishanee Rampersad, Discipline of Optometry, University of KwaZulu-Natal, South Africa
Siddeeqa Jhetam, Discipline of Optometry, University of KwaZulu-Natal, South Africa


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Abstract

Background: It has been suggested that retinal thickness varies with demographic variables. Understanding the influence of demographic variables on retinal thickness could improve our knowledge of risk factors for retinal pathologies. Previous studies have focused exclusively on white and African-American populations, with limited attention to black and Indian populations.

Aim: To compare retinal thickness in black and Indian myopic students at the University of KwaZulu-Natal (UKZN).

Methods: A cross-sectional comparative research design was used. The study was conducted at UKZN, Westville campus. Retinal thickness was measured in 80 healthy myopic students using the Fourier/spectral domain iVue 100 optical coherence tomographer. Retinal thickness measurements of the right and left eyes showed significant correlations, therefore data from only the right eyes were analysed. Racial and gender variations in retinal thickness of the nine Early Treatment Diabetic Retinopathy Study (ETDRS) segments were assessed.

Results: The mean central foveal thickness in black participants was 238 μm compared with 243 μm in Indian participants (p = 0.06). Indian participants had thicker parafoveal thickness measurements whilst black participants had thicker perifoveal thickness measurements. Male participants had thicker retinal thickness measurements in all nine ETDRS segments than female participants. Central foveal thickness showed no significant correlation with spherical equivalent (r = -0.14, p > 0.05) or axial length (r = 0.09, p > 0.05).

Conclusion: The average central foveal thickness was slightly thinner in black and female participants than in Indian and male participants. Optometrists and ophthalmologists should consider these differences when evaluating black and Indian individuals with foveal retinal diseases.


Keywords

optical coherence tomography; retinal thickness; race; gender; myopia

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