Korean J Ophthalmol.  1990 Jun;4(1):40-45. 10.3341/kjo.1990.4.1.40.

Oscillatory potentials of local macular ERG in diabetic retinopathy

• Yoon IH
• Shiroyama
• Miyake Y
• Awaya S

• KMID: 1735060
• DOI: http://doi.org/10.3341/kjo.1990.4.1.40

Abstract

The oscillatory potentials (OPs) in electroretinogram (ERG) have clinical values in measuring retinal functions of the early stage of diabetic retinopathy.However, OPs have, until now, been evaluated as components of total ERG recorded with a full field stimulus over the entire retina. Therefore, little information could be obtained about the macular condition (diabetic retinopathy). Using focal stimuli, we successfully recorded OPs in the human macular region. We modified our previously reported system for recording local macular ERG under the fundus monitor with an infrared television fundus camera. We evaluated macular OPs with simultaneously recorded a-and b-waves in many patients with diabetic retinopathy. In some kinds of early diabetic maculopathy, the macular OPs were selectively reduced, leaving the a- and b-waves intact. The macular OPs can be a valuable indicator in assessing the macular function in diabetic maculopathy.

Keyword

oscillatory potentials; local ERG; macular lesion; diabetic retinopathy

MeSH Terms

Adult
Diabetic Retinopathy/*physiopathology
*Electroretinography
Female
Fluorescein Angiography
Fundus Oculi
Humans
Macula Lutea/*physiopathology
Male
Middle Aged
Oscillometry