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Diagnostic & Specialist - MT-325UD Projection Perimeter

Perimeter, the foundation of visual field testing

  • The MT-325UD perimeter is effective in detecting not only glaucoma but also various other visual field abnormalities.
  • Takagi’s perimeters boast several decades of outstanding performance.



Excellence in glaucoma testing

MT-325UD is exceptional in detecting and assessing a wide range of glaucoma from early to advanced stages. It can also be used to perform kinetic quantitative perimetry in middle-stage glaucoma, where peripheral visual field defects start to appear, as well as in advanced glaucoma. This provides an articulate assessment of a patient’s visual field.

Light and smooth stimulus movement

With MT-325UD, the test stimulus can be moved smoothly to a given position during the examination.

Benefits of manual perimetry

Unlike with the automated versions where testing progresses automatically, manual perimetry allows the examiner to communicate with the examinee during the testing process. This will ease the pressure or fatigue the examinee may feel, facilitating more successful test results.

Exact brightness

One of the crucial parameters in perimetry is precision in the stimulus intensity. As MT-325UD has a light meter built in, the intensity of the stimulus can easily be checked at anytime. Being illuminated, the light meter on MT-325UD can be read clearly even in a dark room.

Optional attachments (sold separately)

Highly-sensitive Flicker Perimetry Attachment

Flickering stimuli make it possible to detect early- stage disorders in the third-order neurons such as optic neuropathy. The flicker frequency is variable between 10 and 60Hz.


Type Hemispherical projection perimeter
Measuring range 90 degrees (temporal) / 70 degrees (superior/inferior)
Testing distance 300 mm (spherical radius)
Background luminance 31.5 asb
Stimulus intensity 1000asb
Neutral density filter Variable in 4 steps at 0.0315, 0.10, 0.315 and 1.00
Variable in 5 steps at 0.40, 0.50, 0.63, 0.80 and 1.00
Variable in 3 steps at 0.0001, 0.01 and 1.00
* Stimulus intensity can be varied in 60 settings by combining the neutral density filters above.
Stimulus sizes (in area) 1/16, 1/4, 1, 4, 16 and 64 mm2
Light meter 0 to 2,000 asb
Light bulbs 6V, 4.35A (stimulus)
8V, 1A (recording paper lighting)
Power consumption 100VA
Dimensions See below
Weight 41 kg (main unit only)