ASTEROID stereotest v1.0: lower stereo thresholds using smaller, denser and faster dots

Area of Science:

• Ophthalmology
• Vision Science
• Computer-aided diagnostics

Background:

• The initial ASTEROID (v0.9) stereotest, utilizing a 3D tablet, demonstrated good correlation with existing methods but yielded higher stereo thresholds.
• This discrepancy was hypothesized to stem from the large, sparse dots employed in ASTEROID v0.9.

Purpose of the Study:

• To introduce and evaluate the stereo thresholds and test-retest repeatability of the revised ASTEROID v1.0.
• To compare the performance of ASTEROID v1.0 against its predecessor (v0.9) and a standard clinical stereotest (Randot Circles).

Main Methods:

• A comparative study involving 75 healthy young adults using ASTEROID v0.9 and v1.0.
• 31 healthy young adults were tested with the Randot Circles stereotest.
• Stereo thresholds and test/retest repeatability were measured for all participants.

Main Results:

• ASTEROID v1.0 demonstrated significantly lower (better) stereo thresholds than ASTEROID v0.9 by a factor of 1.4.
• Thresholds on ASTEROID v1.0 were comparable to those measured with the Randot Circles stereotest.
• Both versions exhibited similar test/retest repeatability, with a 95% coefficient of repeatability of 0.46 log10 arcsec and a Pearson correlation of 0.8.

Conclusions:

• The improved performance of ASTEROID v1.0 is attributed to the use of smaller, denser dots, resolving the higher thresholds observed with v0.9.
• ASTEROID v1.0 provides stereo thresholds and repeatability consistent with established clinical stereotests.
• The revised version is a viable tool for assessing binocular vision.