Currently I think it's -4.25, up from about -2 about four years ago (2018) where it's been since I noticed I was short-sighted (2013??).

I think my left eye is -2.25, up from -0.25 in ~2018 and +0.25 in ~2013.

Feb 7, 9:46pm: What will my right eye's glasses SPH prescription be in 2025, if I get an eye test in that year? → What will my right eye's glasses (negative) SPH prescription be in 2025, if I get an eye test in that year?