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Visual evoked potentials in diabetic patients.

M Algan1, O Ziegler, P Gehin

  • 1Service d'Ophtalmologie B, l'Université de Nancy I, Hôpital Jeanne d'Arc, Toul, France.

Diabetes Care
|March 1, 1989
PubMed
Summary
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Visual evoked potentials (VEPs) show delayed P100 wave latencies in diabetes mellitus patients, indicating potential visual pathway dysfunction. These VEP abnormalities were common but not linked to diabetes type or complications.

Area of Science:

  • Ophthalmology
  • Neurology
  • Endocrinology

Background:

  • Diabetes mellitus is a systemic disease affecting multiple organs.
  • Visual pathway abnormalities can occur in diabetic patients.
  • Visual evoked potentials (VEPs) are a non-invasive neurophysiological test.

Purpose of the Study:

  • To investigate visual evoked potentials (VEPs) in patients with type I and type II diabetes mellitus.
  • To determine if VEP abnormalities correlate with diabetes type, duration, metabolic control, or complications.

Main Methods:

  • VEPs were recorded in 50 type I diabetes patients, 19 type II diabetes patients, and 54 healthy controls.
  • P100 wave latency was measured and compared between groups.
  • Correlation analysis was performed between P100 latency and clinical parameters.

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Main Results:

  • Diabetic patients exhibited significantly longer P100 wave latencies compared to controls (P < .001).
  • Approximately 28% of diabetic patients had P100 latencies outside the normal range.
  • No significant correlation was found between P100 latency and diabetes type, duration, metabolic control, or presence of complications.

Conclusions:

  • VEP abnormalities, specifically prolonged P100 latency, are prevalent in diabetic patients.
  • The clinical significance and underlying mechanisms of these VEP changes in diabetes remain unclear.
  • Further research is needed to elucidate the role of VEPs in monitoring diabetic visual dysfunction.