Freiburg Vision Test (‘FrACT’)
Freiburg Vision Test (‘FrACT’)
Download options
- Stand-alone program for Windows (≈ 3 MB): FrACT3.7.1.exe.zip
- Stand-alone program for Macintosh (≈ 8 MB, Mac OS X with Intel CPU):
FrACT3.7.1.app.zip
(For Mac OS/PowerPC use version 3.6.3)
- Browser-embedded SWF file (300 kB, for Linux, Mac, Windows; requires Flash player version 10+): FACT3.swf
- Previous versions: see below.
- The Manual: All options and default settings are described in this file: FrACT3_Manual.pdf.
Please peruse the manual before sending me questions.
- “Face files” as used in McCulloch DL, Loffler G, Bruce N, Dutton G, Bach M (2011) The effects of visual degradation on face discrimination. Ophthalmic Physiol Opt [in press].
Usage: Download “FaceFiles2011.zip”, decompress, store folder at any convenient location. Tick “allow experimental Face acuity” in Settings. Press “Faces” on the main screen. Navigate to the faces folder, select ALL and load all of them at once. Then the Faces test proceeds; the task is to select the odd-one-out from the four faces, actually quite difficult.
Sufficient distance from the screen is necessary to avoid distortion, just as for normal acuity assessment. Thus if you are testing subjects with normal vision, ≥2 m (for typical screen resolutions) is fine. If you are testing subjects with low vision, reduce the screen distance proportionally to avoid limitations by total screen size.
Needs FrACT version 3.7.
Security issues
It isn't, but this could be a Trojan horse, like any program, you have to trust me.
As to viruses: Macintosh users need not be concerned, there are none for that platform at this time. For Windows, I can state that I personally compiled this progam (using Flash CS4 on a Mac) with no malicious code and placed it on this site myself.To store the settings, FrACT uses the Flash's “Local Shared Objects”, putting a file containing settings and temporary run results on your computer. Visit the Adobe Flash online settings manager to restrict how Flash stores these files; you can completely disallow such files to be saved, but then your settings won't stick.
If you are using FrACT, please cite it when publishing!
Version history (→full history)
Date Version Mac.app Windows.exe generic SWF 2011-10-27 3.7.1b FrACT.app.zip FrACT.exe.zip FrACT.swf 2011-06-30 3.7l FrACT.app.zip FrACT.exe.zip FrACT.swf 2010-09-01 3.6.3 FrACT.app.zip FrACT.exe.zip FrACT.swf 2010-07-29 3.6.2 FrACT.app.zip FrACT.exe.zip FrACT.swf 2010-03-21 3.6beta FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-12-10 3.5.5a FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-10-29 3.5.4 FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-08-20 3.5.3 FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-07-19 3.5.2 FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-05-27 3.5 FrACT.app.zip FrACT.exe.zip FrACT.swf 2009-04-21 3.4.3 FrACT.app.zip FrACT.exe.zip FrACT.swf 2008-12-08 3.3 FrACT.app.zip FrACT.exe.zip FrACT.swf 2008-11-16 3.2 FrACT.exe.zip FrACT.swf 2008-05-30 3.0.4 FrACT.app.zip FrACT.exe.zip FrACT.swf 2007-12-14 2.3 FrACT.app.zip FrACT.exe.zip 2006-03-31 1.4 FrACT.app.zip FrACT.exe.zip FrACT.swf 2004-08-04 5.6.2 FrACT (OS 9 standalone only)
→FrACT homepage
