A Corneal Electrode for Patterned Stimulus Electroretinography

Bloom, Benjamin; Sokol, Samuel

doi:10.1016/0002-9394(77)90627-4

Cited by 9 publications

(2 citation statements)

References 8 publications

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“…In their report, good ERG results were obtained using a standard hydrophilic soft contact lens in combination with topical anesthetic, methylcellulose, and the Burian-Allen electrode. Bloom and Sokol [9] devised a combined soft contact lens and a modified hard contact lens with gold wire adhered to obtain pattern ERGs without anesthesia. Since these early works, soft contact lenses have become popular in ophthalmic practices with most clinics having lenses on hand to use as extended wear bandage contact lenses for corneal therapy.…”

Section: Discussionmentioning

confidence: 99%

Obtaining a contact lens acquired electroretinogram in the presence of topical anesthetic hypersensitivity

Parkinson

Tremblay

2007

Doc Ophthalmol

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Clinical circumstances often demand flexibility in electrodiagnostic procedures. We present a clinical case that required alteration of our routine full-field electroretinography technique. The patient presented with reports of allergy to Xylocaine (lidocaine) and refused the use of any type of topical anesthetic drops. This conflicted with our routine ERG method that combines the use of the Henkes Lovac hard contact lens and the topical anesthetic Alcaine (proparacaine hydrochloride). We acquired a successful electroretinogram without topical anesthesia by using a "piggy-back" system involving the interposition of a soft hydrophilic contact lens between the cornea and the recording hard lens. The procedure yielded excellent ERG recordings and was well tolerated. This non-routine technique was also compared to our standard ERG technique using a normal volunteer. It appears that this proposed "piggy-back" technique is a useful alternative to routine ERG procedure in cases of refusal/allergy to ophthalmic solutions and also potentially in cases where additional corneal protection is needed.

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Section: Discussionmentioning

confidence: 99%

Obtaining a contact lens acquired electroretinogram in the presence of topical anesthetic hypersensitivity

Parkinson

Tremblay

2007

Doc Ophthalmol

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“…The electrode for recording the PERG must be able to keep the sharpness of the pattern and be worn by the patient for a long time to improve the signal. With consideration for these points, several types of electrodes for recording the PERG have been demonstrated (Arden et al, 1979;Bloom and Sokol, 1979;Dawson et al, 1979;Grounauer, 1982). associates (1983, 1984) reported that the PERG could be recorded with a lid skin electrode.…”

Section: Introductionmentioning

confidence: 99%

Clinical application of the pattern electroretinogram with lid skin electrode

1986

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Pattern evoked potentials were recorded simultaneously with an electrode placed on the skin of the lower eyelid, gold foil electrodes hooked on the right and left eyelids, and a skin electrode at Oz in normal subjects and in patients with optic nerve and macular diseases. Peak latencies and amplitudes of the pattern electroretinogram (PERG) were compared between the two electrodes. In both records, the peak latency showed no difference at 56.7 +/- 2.9 ms (mean +/- S.D.), while the amplitude of the PERG with the lid skin electrode was at 1.2 +/- 0.3 microV, approximately one-third of that obtained with the gold foil electrode. Although the skin electrode did not always record responses as well as the gold foil, its advantages recommend its use in clinical cases.

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Macular ERG’s Elicited by Checkerboard Pattern Stimuli

Sokol

Bloom

1977

ERG, VER and Psychophysics

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A Corneal Electrode for Patterned Stimulus Electroretinography

Cited by 9 publications

References 8 publications

Obtaining a contact lens acquired electroretinogram in the presence of topical anesthetic hypersensitivity

Obtaining a contact lens acquired electroretinogram in the presence of topical anesthetic hypersensitivity

Clinical application of the pattern electroretinogram with lid skin electrode

Macular ERG’s Elicited by Checkerboard Pattern Stimuli

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