Serving Gainesville,

Lake City, and Ocala, FL

Gainesville – 352-371-2800


 Lake City – 386-754-0999


 Ocala – 352-867-0045

Vitreo Retinal Associates logo Vitreo-Retinal-Associates-PA-030714-contact

Specialized services offered at VitreoRetinal Associates:

Electrophysiology Services:

1) Fullfield Ganzfeld ERG: Diagnosys Espion (Dark Adaptometry and EOG also available)

2) Multifocal ERG: Diagnosys Espion System (excellent for plaquenil screening)


Visual Fields:

Octopus 900 system: Static and Kinetic Perimetry


Microperimetry: correlates anatomy to function

Nidek MP1-S


Widefield Fluorescein Angiography or Autofluorescence:

Optos - California system


Spectral Domain OCT: (and autofluorescence)

Heidelberg system





Multiple special testing services are offered at VRA, including fullfield and multifocal ERG, microperimetry, and Octopus kinetic perimetry.


Dr. Jing Zhang is our full-time clinical coordinator and experienced electrophysiologist and perimetrist.


Referring physicians, please call 352-371-2800 to request specialized testing services for your patients.

ffERG mfERG octopus