| eyepiece → HasA → focal length | 0.56 | |
| eyepiece → HasA → integral swivel dust cover | 0.50 | |
| eyepiece → HasA → one or more ocular lenses | 0.31 | |
| eyepiece → HasA → large field of view | 0.31 | |
| eyepiece → HasA → good eye relief | 0.16 | |
| eyepiece → HasA → long eye relief | 0.16 |