Preview of "distance visual acuity" offers by |
Amazon| Size of letters required for visibility as a function of viewing distance and ob… (Book) For sale by the Supt. of Docs., U.S. G.P.O | |
 | Good Lite Lea Symbols® 10 Line Distance Chart with 10' & 20' Notations Only (Health and Beauty) Good-Lite |
 | Case Study of the Naval Postgraduate School's Distance Learning Program (Book) Storming Media |
| Multimedia Data Capture with Multicast Dissemination for Online Distance Learnin… (Book) Storming Media |
 | Good Lite LEA Distance Vision Screener Flipchart (10 Feet, 3 Meter) (Health and Beauty) Good-Lite |
| The interrelationship of visual acuity at different distances (Book) | |
| Visual survey of infantry troops, part I: Visual acuity, refractive status, inte… (Book) U.S. Army Aeromedical Research Laboratory | |
 | Good Lite Lea Symbols® Massachusetts Distance Folding Chart (Health and Beauty) Good-Lite |
 | Good Lite Lea Symbols® & HOTV Massachusetts Distance Chart (Health and Beauty) Good-Lite |