Roland Consult Electrophysiological Diagnostic Systems

Introduction:

Electrophysiological Test Unit is usable for Pattern VEP+ Pattern ERG + Flash VEP, for scotopic and photopic ERG, EOG fast and slow, mf ERG Flash stimulation and mf VEP Pattern stimulation. The Roland RETI-Scan animal unit consists of the stimulator units and data recording and analyzing system. The biosignal amplifier includes a preamplifier near the patient. All patient data and the results are stored in a database. The biosignal and averaged curves from all channels can displayed on the monitor. In the analyze mode the system set all markers and calculates all defined parameters automatically. The software includes a lot of advanced features like FFT analyze, off-line averaging and PreTrigger. The new Macula tool for better and accurate understanding of function and structure of the Retina. It is possible to do in 30deg SLO picture, ERG for 7 and 19 areas.

The product is comprised of multiple components, including a stimulator which encompasses a graphic stimulator and a flash stimulator. Other essential elements consist of a signal amplifier, an animal experimental table equipped with a flexible electrode holder, a thermostat for temperature regulation, and a variety of electrodes such as animal needle electrodes, animal ring cornea electrodes of varying sizes (4mm, 8mm, and 3mm), ERG contact lens electrode, and DTL electrode. Additional items include DTL connection wire, mouse corneal contact lens, mouse lens, flash stimulator, computer, display, keyboard, mouse, power box, and electrode.

Specifications:

• Model: RETI-Scan21
• Mouse table: Size: 20 x 30 cm
• Heating platform with warm water connection to keep the animal warm
• Multifocal analysis with N1, P1 marker, 2D, 3D groups and user groups
• FFT-Fast Fourier Transformation to analyse steady state results
• DSP-Digital Signal Processing Filter
• Motorized operator table
• Biosignal Amplifier:
  • 2 or 4 channel
  • Type BF check voltage 1,5 kV
  • Impedance 2 x 100 M. Noise <4u V(SS)
  • Common mode rejection >110 dB
  • Gain up to 150.000
  • Sensitivity 10uV/Div to 2 m V/Div
  • High pass: 20 Hz to 10 kHz
  • Low pass : 0,02 Hz to 1 kHz

Application of Visual Electrophysiology

• Identification of objective visual function
• Refractive media opacity electrophysiology clinical significance
• Diagnosis of specific diseases
• Evaluation of clinical efficacy
• Toxic retinal disease surveillance
• Identification of pseudo-blind and non-organic vision loss
• Selecting clinically the project according to the following principles:

• if patient has seen rentinal lesions, we select ERG;
• if patient has seen papillopathy or intracranial lesions, we select VEP;
• In most cases, such as the unexplained vision loss, eye contusion, infant dysfunction, retrobulbar optic neuritis, toxic and nutritional lesions, we must select VEP and ERG examination;
• EOG is important to the functional assay of Beat disease.

Consumables:

• Animal Golding Electrodes
• Gold wire 0,5 mm, various ring diameters 3-5 mm Part No 3103RC, 3110RC
• Concentric Subdermal Needle
  • Steel 0.4 x 13 mm
  • Platinum 0.4 x 13 mm