The Cone Electroretinogram in Retinopathy of Prematurity

The focal cone electroretinogram

The focal cone electroretinogram (ERG) in monkey retina has been examined with a 3 deg pulse of laser light (544 and 633 nm) centered on a 25 deg steady white rod saturating field. The stimuli were viewed simultaneously through a slit lamp and corneal contact lens. Cone ERGs were studied at different eccentricities from the fovea and compared with full-field corneal and intraretinal ERGs. The c...

The retinopathy of prematurity.

When the condition of retrolental fibroplasia was first described by Terry (1942) in the United States of America it was then only recognized in the advanced state of a cicatricial mass or membrane behind the lens. It is now appreciated, however, that the earliest pathological changes occur in the nerve fibre layer of the retina, which first of all becomes thickened as a result of oedema, trans...

Transpupillary Diode Laser Retinal Photocoagulation for the Treatment of Retinopathy of Prematurity: Experience in Southern Iran

The electroretinogram in minimal diabetic retinopathy.

The pattern and diffuse flash electroretinograms were measured in 20 normal subjects and 40 diabetic patients who had either normal fundi or microaneurysms only. The amplitudes of the pattern electroretinogram were found to be similar in both normals and diabetics. In the case of the flash electroretinogram the diabetic patients showed a division into two main groups. One group was not dissimil...

The multifocal pattern electroretinogram in chloroquine retinopathy.

PURPOSE Optimal screening for ocular toxicity caused by chloroquine and hydroxychloroquine is still controversial. With the multifocal pattern electroretinogram (mfPERG), a new electrophysiological technique has recently become available to detect early changes of ganglion cells. In this study this new technique is applied to a series of 10 patients seen consecutively receiving long-term chloro...