Yukon 24021 Monocular "clean black binoculars" Questions

...problem is that i have a Night Vision Binocular Rigel 2100 and i Cannot see nothing thru them is all black Hello, did you install new batteries? Is the battery compartment terminerals clean? ...

...clean the lenses. Is it distorted? Don't know how to fix. Especially if the lens is cracked/scratched etc. Is it dark/snowy? Put fresh batteries in. Do you see black spots in the tube? Don't worry, ...