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Soft transparent graphene contact lens electrodes for conformal full-cornea recording of electroretinogram.


ABSTRACT: Visual electrophysiology measurements are important for ophthalmic diagnostic testing. Electrodes with combined optical transparency and softness are highly desirable, and sometimes indispensable for many ocular electrophysiology measurements. Here we report the fabrication of soft graphene contact lens electrodes (GRACEs) with broad-spectrum optical transparency, and their application in conformal, full-cornea recording of electroretinography (ERG) from cynomolgus monkeys. The GRACEs give higher signal amplitude than conventional ERG electrodes in recordings of various full-field ERG responses. High-quality topographic mapping of multifocal ERG under simultaneous fundus monitoring is realized. A conformal and tight interface between the GRACEs and cornea is revealed. Neither corneal irritation nor abnormal behavior of the animals is observed after ERG measurements with GRACEs. Furthermore, spatially resolved ERG recordings on rabbits with graphene multi-electrode array reveal a stronger signal at the central cornea than the periphery. These results demonstrate the unique capabilities of the graphene-based electrodes for in vivo visual electrophysiology studies.

SUBMITTER: Yin R 

PROVIDER: S-EPMC5998030 | biostudies-literature | 2018 Jun

REPOSITORIES: biostudies-literature

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Soft transparent graphene contact lens electrodes for conformal full-cornea recording of electroretinogram.

Yin Rongkang R   Xu Zheng Z   Mei Ming M   Chen Zhaolong Z   Wang Kai K   Liu Yanlin Y   Tang Tao T   Priydarshi Manish Kr MK   Meng Xuejuan X   Zhao Siyuan S   Deng Bing B   Peng Hailin H   Liu Zhongfan Z   Duan Xiaojie X  

Nature communications 20180613 1


Visual electrophysiology measurements are important for ophthalmic diagnostic testing. Electrodes with combined optical transparency and softness are highly desirable, and sometimes indispensable for many ocular electrophysiology measurements. Here we report the fabrication of soft graphene contact lens electrodes (GRACEs) with broad-spectrum optical transparency, and their application in conformal, full-cornea recording of electroretinography (ERG) from cynomolgus monkeys. The GRACEs give highe  ...[more]

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