Answer:
Generally speaking, these visors depend on the wearer having near perfect vision. People without near perfect vision usually have corrective glasses that take into account slight variations of magnification between both eyes and may also include a correction of the angle with which the eye sees the world as well.
Still, in your case, using these visors with tri-focal glasses will limit the field of view for close work in the very least, confuse your eyes or give you headaches. I would suggest you use them first without your glasses and see how that goes and if they are not strong enough choose a set of stronger magnification lenses from the assortment of many you receive with this product..
I have used these visors with a pair of glasses containing progressive lenses and they were really hard on my eyes and caused headaches. I reverted to using a pair of some over the counter corrective reading glasses I had on hand. Perhaps over the counter reading glasses may also be a solution you can try as well.
Gender: Male
Age: 55 to 64
Length of Ownership: 1 year or longer
Level of Expertise: Advanced