Tinted Glasses
Suppliers recommended for Europe:
ZEISS
F540-580 family or F60-90 family with brown color added
MULTILENS
ML 527, ML 550 and ML585.
https://www.multilens.com/en/catalog/node/filter-ml-filter-colours
In all cases, people with A have to use frames which stick firmly to their head/face to prevent the light getting into their eyes.
Multilens have also frames available.
https://www.multilens.com/en/catalog/node/lens-program-frames-frames-covers
But all lens manufacturers can put their lenses in any frames.
JZO
There is also a Polish manufacturer JZO that have a good filter for A.
https://www.jzo.com.pl/powloki-i-barwienia/barwienia-i-powloka-flash-uv/
MED 6 filter is recommended for A.
Suppliers recommended for the US:
NOIR
http://2redlenses.org/sunglasses/noir-lenses/
NOIR cannot put prescriptions in their lenses
Tints recommended for A:
Indoor: #533, #553, #60, #95
Outdoor: #93, #99
If you need prescription, please use Chadwick Optical
They can make NOIR filters shown above with prescription.
https://www.facebook.com/chadwickoptical/
Always use frames which cover firmly the area around your eyes (sport type of frames).
In 2021 Achrolenses is going to launch their own series of tinted glasses for achromatopsia.