Loupe for wide-angle lenses?

[Ari]

Hi,
Regrettably, I no longer have the eyes of my youth, and I'm finding it difficult to focus wide-angle lenses with a great degree of accuracy.
I have a 72, 90 115, and 210; the 210 is always focused perfectly because it's much easier to see the subject when there's greater magnification.
I've been getting soft images lately with my wides, especially 72 and 90.

My Peak 5x loupe, normally a great piece of plastic, might not be up to the task of focusing the wider lenses using my foggy blinkers.

Can anyone recommend a good inexpensive loupe in the 8x or 10x range? Or any range?

ps-I don't use reading glasses, I'm a contact lens wearer.

Thanks in advance.