Early diagnosis of siderosis retinae by the use of electroretinography

Karpe, G.

doi:10.1007/bf00204535

Cited by 26 publications

(13 citation statements)

References 2 publications

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“…He also stated that 'negative (+)' represents an early stage of the disease and that removal of a foreign body by this stage can restore ERG. Later, Karpe [14] reported that the initial ERG change in metallosis bulbi is an increase in the amplitude of both the a-and b-waves.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of retinal integrity in eyes with retained intraocular metallic foreign body by ERG and EOG

et al. 1992

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In three eyes with a retained intraocular metallic foreign body, the neural retina and retinal pigment epithelial (RPE) integrity were evaluated by means of ERG (a-wave, b-wave, oscillatory potentials) and non-photic EOG responses from the RPE (hyperosmolarity response, Diamox response, bicarbonate response). All three cases were judged in an early stage of retinal impairment on the basis of a well-preserved or supernormal b-wave amplitude and showed good postoperative prognosis. Out of three non-photic responses from the RPE, only the bicarbonate response was preoperatively reduced in two out of the three eyes.

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Section: Discussionmentioning

confidence: 99%

Evaluation of retinal integrity in eyes with retained intraocular metallic foreign body by ERG and EOG

et al. 1992

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“…The diagrams also show influence of zinc in copper-zinc alloys as a function of the zinc content. Two eyes harboring a particle of alloy D presented a supernormal ERG [16] for two days after wire implantation.…”

Section: The Effect Of Various Intravitreal Copper Alloysmentioning

confidence: 99%

Intravitreal cupriferous foreign bodies: Electroretinograms and inflammatory responses

Schmidt

1987

Doc Ophthalmol

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This is a report on the effects of various equally sized copper alloys implanted in the vitreous body of 52 Wistar rats. The main results are as follows: (1) The alloy of 99.9% copper with 0.1% silver (A) destroyed the electroretinogram (ERG) faster than specially purified copper (B). In contrast, copper-zinc alloys (C and D) affected the ERG more slowly than B. This effect is more obvious in alloys containing a large amount of zinc (D). (2) The degree of complication in the anterior segment (iridocyclitis, corneal opacity, hypopyon) and in the vitreous body (intensity and rate of opacity) depend essentially on the type of alloy. The frequency and extent of inflammatory responses decreased in the following order: alloy A, B, C and D.

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“…The authors claimed that this narrowing causes gliosis in the retina. Their findings cannot explain the early electrorctinogram (ERG) changes ob served in the indirect siderosis bulbi [Karpe, 1948;Knave, 1969Knave, , 1970 and due to the involvement of the retinal pigment epithelium (RPE). Wise [1966] claimed that iron parti cles absorbed by the retina cause siderosis and gliosis and that narrowing of retinal vessels is secondary to retinal gliosis.…”

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confidence: 93%