https://orcid.org/0000-0002-9335-948X
Figures & data
Table 1 Values for Stereo, Acuity and Color for Champion Shotgun Shooters and Normal Subjects. PDI Check Dynamic Autostereoscopic Near Vision Test Does Not Have a Threshold “Floor” for Highest Performance Stereo and Color Vision Unlike Titmus Fly. # is the Number of Subjects Including 29 Shotgun Shooters with “Experienced” Meaning Those Classified as Expert or Advanced. The Non-Parametric Median with Interquartile Range (Q1 and Q3) and 95 Percentile Ranges are Compared to Mean and Standard Deviation (S.D.) Even Though Frequency Distributions Were Not Normal. logStereo is the Base-10 Log of PDI Check Stereo. VaR and VaL are Autostereoscopic Monocular Dynamic Landholt C Acuity. PDI Check Trichromatic Color for Red, Green and Blue Cones Either Right or Left (r or l) Eyes and Right Eye Also Compares Testing Clear and with Dark (Cherry) and Filtered (Yellow) Goggles
Figure 1 Box and whisker plots of near vision performance from PDI Check comparing champion shotgun shooters with normal Army volunteers. The vertical scale covers three variables; visual acuity as the 20/20 denominator calibrated near output from PDI Check, arc seconds of stereo (Titmus Fly and PDI Check) and percent color scores. Va-right and Va-left are monocular rivalry Landholt C forced-choice dynamic recognition scores. Trichromatic dynamic monocular scores separate red cone, green cone and blue cone performance. Subjects included experienced shotgun shooters (orange whisker plots), age-matched Army volunteers (green boxes with black whiskers) and age-matched Innova-Rabin passed normal volunteers (purple box with black whiskers). Shotgun shooters tested colors with and without dark and filtered goggles. Statistically different groups identified by red double arrows below.
