Best magnifier Edroy Magni Focuser Magnifier 2 75X Power

https://www.penntoolco.com/edroy-magni-focuser-magnifiers/

Custom fit a Magni-Focuser magnifier to suit your individual near-vision needs. 
The Magni-Focuser features an adjustable, contoured padded vinyl headband that guarantees a perfect fit.
It is lightweight, comfortable, washable and can be worn over glasses.
Its high impact, non-corrosive ABS plastic front lens unit is not only shatter resistant but scratch resistant as well.
Since there is no center post, the field of vision is never obstructed.