Magna visor bausch - Bausch&Lomb Magna Visor Magnifier Loupe w/ 3 Lenses, Hands-Free Head Mount 81-42-00

The optical quality is good but all else seemed to be poorly designed for ease of use . I found changing lenses difficult and methodology had you optically contaminating lenses upon insertion to holder.
Not well thought out, not thought out at all. There are some visors for a fraction of the cost that are much better designs for ease of use.
Pros: optical quality very good
Cons: interchangeable lenses are difficult not well thought out

This review was written in the old system and had content requirements that are different than reviews written today.