Methodology Report

A Suprachoroidal Electrical Retinal Stimulator Design for Long-Term Animal Experiments and In Vivo Assessment of Its Feasibility and Biocompatibility in Rabbits

Table 1

Measured impedance at 1 KHz in vivo for two weeks after implantation. The strip-shaped seven-segment electrode array was placed into the suprachoroidal space and reference electrode was placed on the surface of sclera. A strip-shaped electrode site was connected to the working electrode input, and the stimulating reference electrode served as the counter and reference electrode. 0 week means the day of implantation.

Site No.Impedence (kohm)/Phase (degree)
0 week1 week2 weeks

110.50 (−42.8)9.50 (−44.5)9.99 (−45.7)
214.10 (−40.3)13.30 (−35.0)13.00 (−29.3)
39.01 (−43.2)9.48 (−41.6)11.23 (−39.7)
413.70 (−41.3)10.40 (−38.9)11.80 (−39.4)
59.29 (−38.0)10.94 (−40.9)9.08 (−36.9)
610.25 (−45.9)9.67 (−43.0)8.98 (−40.7)
78.94 (−43.8)10.08 (−46.7)12.60 (−39.2)