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Year : 2013  |  Volume : 5  |  Issue : 2  |  Page : 49-53

Visual field deficit in diabetes mellitus in presence of no or minimal diabetic retinopathy

Department of Neuroscience, Faculty of Optometry and Visual Science, Al Neelain University, Khartoum, Sudan

Correspondence Address:
Galal Mohamed Ismail
Faculty of Optometry and Visual Science, Al Neelain University, Khartoum
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DOI: 10.4103/1858-540X.124821

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Introduction: Central visual field examination is a great clinical interest in diabetes mellitus, since changes in the visual field would be accepted as an indication of pathological condition. Hence, it is reflecting structural abnormalities in the ocular and the neural mechanisms of vision. The central visual field was examined in this study to investigate possible early changes in the macular area with a view to providing an assessment of early neural functional integrity in the presence of no or minimal diabetic retinopathy. Materials and Methods The investigation was carried out on a healthy visual system control group and a number of age-and sex-matched non-insulin dependent diabetic groups with different levels of diabetic retinopathy. The psychophysical test used was Oculus Tubingen perimeter. Results: The results were considered in terms of the presence of functional changes relative to the severity of retinopathy and the duration of diabetes. The visual fields test differentiated between normals and those with diabetes but with retinopathy. The test failed to differentiate between normals and diabetics without retinopathy. Conclusion: Visual filed defects are not strongly related to the duration of diabetes, but more to the severity of the retinopathy. They can be correlated to areas of capillary non-perfusion.

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