if your doctor put new prescription, do not throw away your old glasses

try these instead. it's free and reproducible.

test on variations: on bright day with sun light (outdoor) focus on a fixed distance, say 4 meter. wear old glasses of -.5, -1, -2 ... and your new prescription keep note which if those glasses give clear vision

then vary the distance to 15cm, 30cm, 1m, 2m ... very far

then vary the brightness level, next go to building with low light intensity, like underground parking

then do the variation on distances and glasses' power

keep notes of all your experiments

the idea borrows from design of experiment of 2^3 factorial design: high and low brightness short and long distances old and new glasses

the conclusion would be use the least power for different situations and best if you dont use any glasses (well, there's plus lens therapy which is the next step)

say if you can see clearly thing on your phone (15 cm, light emiting screen -- i always use max brightness) without glasses, the don't use glasses

if your -1 glasses are sufficient for desktop work, don't use higher power although no glasses wont hurt (i increase the font size till legible)

anyway, if you're determined to do the experiments, please let us know

thank you in advance