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OMS-90, Operation microscope

Short description

OMS-90, Operation microscope
The OMS-90 is Topcon’s basic ophthalmic microscope.
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Key Features

  • New coaxial illumination
  • Stain-proof coated objective lens
  • Parallel binocular tube
  • Built-in yellow filter
  • Focal length of 200mm
  • Compact footprint


Binocular tube Parallel 45° inclined binocular tube
Objective lens F=200mm
Eyepieces 12.5x
Magnification change type Drum type with 5 changes
Total magnification 3.4x, 5.3x, 8.5x, 13.6x, 21.2x
Field of view Ø 66.3, Ø 42.3, Ø 26.3, Ø 17.1, Ø 10.3 mm
X-Y Translator (option) Range: ±25mm
Light source 12V 100W halogen lamp (light guided system) (one-touch changeable two lamps)
Filter Built-in: Heat absorbing and UV cut filters
Flip-in/out: Yellow filter
Length 1st arm: 400mm; 2nd arm: 560mm
Rotational angle 1st arm: 360°; 2nd arm: 300°
Base dimensions Ø 740m (30”)
Primary voltage AC100~120V or AC220~240V
Power frequency 50/60Hz°
Maximum power consumption 280VA 740mm (30”)
Weight 97 kg


The OMS-90 is Topcon's basic ophthalmic microscope. The OMS-90 has a parallel binocular, a built in yellow filter, a five step magnification, and a newly designed coaxial illumination. The red reflex is good, thanks to the coaxial illumination.

The OMS-90 can be extended with an XY translator, assistant's microscope and camera attachments.