Marco TRS-3100 Automated Refraction System

Brand: Marco

SKU: RT-3100

The Marco TRS-3100 Automated Refraction System empowers you to perform quick, comfortable, and accurate refractions.

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The Marco TRS-3100 Automated Refractor features a sophisticated and ergonomic design. The digital refractor connects wirelessly to your Marco autorefractor, auto lensometer, and EMR for a smooth, efficient examination process.


  • Intuitive color LCD touchscreen controller
  • Easy on-off LED lamp
  • Cross cylinder testing
  • Built-in printer
  • Compact and ergonomic refractor head
  • Automatic convergence
  • R/L independent PD adjustment
  • Built-in Intelligent Card (IC) Reader for seamless integration

A More Comfortable Exam

The 5.7-inch LCD color monitor gives enhanced, illuminated detail with touchscreen functionality. The compact design of the keypad maximizes workspace and user comfort, avoiding the risk of shoulder and neck injury. An advanced dial with S/C/A mode keys in the center of the dial allow the operator to quickly refine sphere, cylinder, and axis using only one hand.

Additionally, the TRS-3100’s compact and ergonomic design covers less of the patient’s face, making it more comfortable for them. A wide visual field (40°) provides a natural view of the environment enabling more realistic and accurate refractions.

Enhanced Refinement

Extremely small increments of measurement may be used on the TRS-3100. Axis refinements are 1-5° and prism adjustments are 0.1-1.00. Immediate justification is accomplished by comparing the old Rx to the subjective with a single push of a button.

Convergence & PD

During near point tests, power convergence and power PD are adjusted automatically. PD can be adjusted independently for more accurate and reliable measurements.

Easy Maintenance

Antifogging protective glasses and detachable forehead rest/face shields make the RT-3100 digital refractor easy to clean and maintain.


Sphere -19.00 to +16.75D (0.25 / 0.50 to 3.00D increments)
Cylinder 0.00 to ±6.00D (0.25 / 1.00D increments)
Axis 0° to 180° (1°/5° increments)
PD 48.0 to 80.0mm (far mode) 50.0 to 74.0mm (near working distance of 35 cm) 54.0 to 80.0mm (far PD possible for 100% convergence)
Rotary Prism 0.0 to 20.0 ∆ (0.1 / 0.5 / 2.0 ∆ increments)
Cross Cylinder Lens ±0.25D
Occluder Pinhole Plate 2.0mm
Red Maddox Rod Right eye: horizontal, Left eye: vertical
Red/Green Filter Right eye: red, Left eye: green
Polarizing Filters Right eye: 135˚, Left eye: 45˚ / Right eye: 45˚, Left eye: 135˚
Fixed Cross Cylinder Lens ±0.50D
Spherical Lenses for Retinoscope +1.50 / +2.00D
Dispersion Prism Right eye: 6 ∆ BU, Left eye: 10 ∆ BI*
Refraction Distance for Near Vision 350 to 700mm (selectable in increments of 50mm)
Visual Field 40˚ (VD = 12mm)
Forehead Rest Adjustment 14 ±2mm
VD Scale 12, 13.75, 16, 18, 20mm
Horizontal Level Adjustment ±2.5˚
Display 5.7in Color LCD
Printer Built-in
IC Reader/Writer Built-in
Power Supply AC 100 to 240 V
Power Consumption 80 VA
Refractor Head Main Body (MB) 13.98 (W) x 3.94 (D) x 10.87 (H)” (without bracket) / 7.72 lbs.
Control Box (CB) 6.30 (W) x 8.23 (D) x 6.50 (H)” / 3.75 lbs.
Relay Box (RB) 7.64 (W) x 8.94 (D) x 2.40 (H)” / 4.40 lbs.
Standard Accessories Near point card, Near point rod, Forehead rest, Face shield, Stylus pen, Dust cover, Communication cable (MB-RB, CB-RB), Printer paper (3 rolls), Power cord, Operator’s manual
Optional Accessories Intelligent Cards (5 cards/set)