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
According to Dr Goldberg, who I heard on Huberman's podcast[1], morning sunlight so you can get red light. Dusk/twilight also has red light, but I've heard that it's helpful to combat the effect of bright light before sleep, like that from screens, for some reason I forget. Now I make sure to get a bit of both.
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