Vision testing systems
ACP901
LED-backlit vision testing display for the optical practice and the examination room
Brand Canton
Intended use
The ACP901 is an LED-backlit vision testing display for assessing visual acuity and binocular vision. The optotypes and test charts are vector graphics, so the device redraws them according to the selected examination distance and visual acuity scale.
The device is operated with a remote control. A test is selected from the home view, where all tests are collected as icons, or from a personal quick test list.
Key features
- 17-inch LED-backlit display, 1280 × 1024 px
- Optotypes and tests as vector graphics — they scale with the examination distance
- Contrast sensitivity test (CNT) with the result presented as a curve
- V-shaped optotype layout in which the characters are not crowded
- Mirroring function for examination through a mirror
- Gamma calibration for contrast sensitivity measurement
- Video playback and image browsing
Usability and workflow
- Infrared remote control (2 × AAA)
- All tests as icons in the home view
- Quick test list: up to ten of the most frequently used tests
- Examination distance adjustable 2–7 m (in 0.1 m steps)
- Optotype size changes with the examination distance
- Red–green value adjustable to the examination situation
- Randomised presentation of optotypes
- Screen saver and standby
- User interface languages: Chinese and English
Who is ACP901 for, and what is it used for?
- Optical practices
- Examination rooms
- As part of refraction work
- Visual acuity measurement
- Digital examination environments
Technical specifications
Display
- Type
- 17-inch XGA panel, LED backlight
- Resolution
- 1280 × 1024 px
- Brightness
- 200 cd/m² (minimum)
Tests
- Optotypes
- Tumbling E, Landolt C, letters, numbers, children’s pictures, Allen
- Masks
- Single character, horizontal row, vertical row, white/black, red/green
- Special tests
- ETDRS, contrast sensitivity, contrast, Ishihara, cross-cylinder, astigmatic fan, cross-grid, fixation point, stereo, red–green panel, Worth 4 dot, red–green balance, traffic light, horizontal and vertical coincidence, Schober
- Low vision chart
- E, C, letters, numbers, children’s pictures, Allen
- Other functions
- Video playback, image browsing, randomisation, mirroring, screen saver, standby
Visual acuity scales
- Decimal
- 0.04–2.0
- Snellen (ft)
- 20/500–20/10
- Snellen (m)
- 6/150–6/3
- LogMAR
- −0.3–1.4
- 5-step
- 3.6–5.3
Examination distance
- Standard charts
- 2–7 m (step 0.1 m)
- Low vision chart
- 0.6–1.5 m (step 0.1 m)
Device data
- Power supply
- AC 100–240 V, 50/60 Hz
- Power consumption
- 20 W (maximum)
- Remote control
- Infrared, 2 × AAA
- Package dimensions (L × W × H)
- 540 × 420 × 210 mm
- Weight
- 2.5 kg (net), 6 kg (gross)
Scope of delivery
- Standard accessories
- Remote control, wall mount, red–green glasses, optotype card, power cord, AC/DC adapter
- Optional accessories
- Table stand, floor stand
Source of information: Canton product brochure ACP 901 LED Vision Chart.
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