Thanks for your help. I understand that there are some physical limits to how large lenses can be and corresponding magnification.

Strongestmagnifying Glassfor legally blind

Neutral Density filters are used to obtain slower shutter speeds or to open up the aperture to reduce depth-of-field in bright light conditions.

Kenko Real Pro ND8 Filters Kenko Real Pro 58mm - $49 - in stock Kenko Real Pro 67mm - Reg $69 Sale $45 - limited stock Kenko Real Pro 72mm- $79 - special order Kenko Real Pro 77mm - $99 - special order Kenko Real Pro 82mm - $109 - special order Cuts the light by 3 stops. More multicoating than the Kenko Smart Slim ND filter. Made in Japan. Extremely similiar to the Hoya Pro ND 8 filter, since Hoya and Kenko are the same company.

100xMagnifying Glass

Kenko Real Pro ND100 Filters Kenko Real Pro 67mm - $89 - special order Kenko Real Pro 72mm - $89 - special order Kenko Real Pro 77mm - $99 - special order Kenko Real Pro 82mm - $129 - special order Cuts the light by 6 2/3 stops. Made in Japan. Extremely similiar to the Hoya Pro ND 100 filter, since Hoya and Kenko are the same company.

My poor mom is having an awful time. We have a 4x glass we bought her. But she needs more. The >4x lenses I see seem to be of small diameter. What would be great is if we could have a 5" lens size with 6,7 times the magnification.

Kenko Smart Slim ND8 Filters Kenko Slim 49mm - $18 - special order Kenko Slim 52mm - $19 - in stock Kenko Slim 55mm - $24 - in stock Kenko Slim 58mm - $25 - in stock Kenko Slim 62mm - $29 - in stock Kenko Slim 67mm - $29 - in stock Kenko Slim 72mm - $30 - in stock Kenko Slim 77mm - $35 - in stock Kenko's entry-level ND8 filter. Cuts the light by 3 stops. Made in the Philippines. Extremely similiar to the Hoya ND 8 filter, since Hoya and Kenko are the same company.