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ORIGINAL ARTICLE
Year : 2014  |  Volume : 1  |  Issue : 2  |  Page : 82-85

Estimation of the Eyeball Volume on Magnetic Resonance Images in Zaria, Nigeria


1 Department of Radiology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria
2 Department of Radiology, University of Port Harcourt Teaching Hospital, Port Harcourt, Nigeria
3 Department of Ophthalmology, Ahmadu Bello University Teaching Hospital, Zaria, Nigeria

Correspondence Address:
Philip Oluleke Ibinaiye
Department of Radiology, Ahmadu Bello University, Zaria
Nigeria
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DOI: 10.4103/2384-5147.136817

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Background: Decrease or increase in eyeball volume (EV) may indicate ocular pathology. Unfortunately the reference values utilized for EV in Nigeria has been that of Caucasians. There is paucity of literature on EV measurements in Nigeria and none (to the best of our knowledge) on magnetic resonance imaging (MRI) EV biometry in Nigeria. Aim: To establish the normal EV in healthy population in Zaria using a reliable MR imaging. Patients and Methods: The EV volumes of 100 consecutive 'normal' patients who had MRI scan done (using Siemens MR imaging permanent magnet, 0.2T) were calculated. The dimensions were obtained at mid-ocular axial slices with maximum anterior-posterior dimension and maximum size of the eye lens. Results: The mean EV of the right eye was 6.75 ± 1.01 cm 3 while that of the left was 6.74 ± 0.95 cm 3 . The mean EV in the males' right eye was 6.86 ± 0.98cm 3 while that of the left eye was 6.97 ± 0.99 cm 3 . Whereas, the mean ± right VE in the females was 6.61 ± 1.03 cm 3 while that of the left eye was 6.52 ± 0.86. VE correlated with the patients' age with P < 0.001 for both sides. Conclusion: The EV of males is larger than that of females but not statistically significant. EV was observed to increase with age, but it declined after age 40 years. The study also established EV in a sample of normal population in Zaria with the hope that it will serve as reference values in that local environment.


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