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Which of the following instrument is used for recording the change in potential when light falls on the eye?

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Which of the following instrument is used for recording the change in potential when light falls on the eye?

(a) Apexcardiography

(b) Ballistocardiography

(c) Electro-oculography

(d) Electro-retinography

The question was posed to me during an interview.

Question is from Catheterization Laboratory Instrumentation in chapter Patient Monitoring System of Biomedical Instrumentation

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Right option is (d) Electro-retinography

For explanation: It is found that an electrical potential exists between the cornea and the back of the eye. This potential changes when the eye is illuminated. The process of recording the change in potential when light falls on the eye is called electroretinography.

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