4 ms·

Also got my first pair of glasses a few week ago when visiting home! I love them, everything is so clear, it's almost like switching to 4k! But something is of

by 1996 8y ago

Also got my first pair of glasses a few week ago when visiting home! I love them, everything is so clear, it's almost like switching to 4k! But something is off when I read my computer screen. Also they cause eye strain after a while if I am reading. Several people mentioned having separate pair of glasses. I have started reading about lenses and all that, very interesting. I'm considering getting extra pairs for cheap to test if I can get something better to use with a computer. I've seen many recommendations about regular glass (non polycarbonate): heavier, but harder to scratch, and with fewer aberrations. Also, I've been reading about how some lens maker can go with very precise steps in dioptry, also for the angular degrees of astigmatism instead of rounding. Maybe that would help too?

wtallis 8y ago
I recently purchased glasses online for the first time, from EyeBuyDirect. I got a pair specifically for computer use, with a weaker prescription, smaller pupil distance, and lower index of refraction to cut down on chromatic aberration. For $45 I'm fairly satisfied, even though I haven't quite got the frames adjusted for a perfect fit yet. The chromatic aberration is still noticeable when I look for it, but definitely smaller than my regular glasses, and I'm hoping that in the long run it will be less distracting with the new pair.
- 1996 8y ago
  How did you adjust the correction to get focus at say 3 ft / 1 m for computer use? Why a smaller PD?? I thought it was fixed by your skull anatomy?
  - safanycom 8y ago
    I asked for this as a reglaze and they called it a "Snooker lens" even though it was for a regular frame Almost ungooglable, but I get the concept
    - 1996 8y ago
      I'm not sure I understand.
  - wtallis 8y ago
    The spherical correction was weakened by half a dioptre, leaving the cylindrical correction unchanged. So for my bad eye, the computer prescription's SPH is -4.75 instead of -5.25. This roughly agrees with the calculator at http://www.computerglassesrx.com/ http://www.computerglassesrx.com/ The PD for near vision is only slightly smaller than for distance vision: 60mm instead of 63mm for me, less than 5% reduction. I doubt it is all that important since I've been using distance vision glasses to read with for decades, but it is a fact that you have to go a little bit cross-eyed to properly focus on something close to you. I think it might help a bit for looking at very small objects just a few inches away, but ditching the glasses entirely works even better for me when I need to read eg. markings on a 4mm IC.

by 1996 8y ago

wtallis 8y ago

I recently purchased glasses online for the first time, from EyeBuyDirect. I got a pair specifically for computer use, with a weaker prescription, smaller pupil distance, and lower index of refraction to cut down on chromatic aberration. For $45 I'm fairly satisfied, even though I haven't quite got the frames adjusted for a perfect fit yet. The chromatic aberration is still noticeable when I look for it, but definitely smaller than my regular glasses, and I'm hoping that in the long run it will be less distracting with the new pair.

1996 8y ago
How did you adjust the correction to get focus at say 3 ft / 1 m for computer use? Why a smaller PD?? I thought it was fixed by your skull anatomy?
- safanycom 8y ago
  I asked for this as a reglaze and they called it a "Snooker lens" even though it was for a regular frame Almost ungooglable, but I get the concept
  - 1996 8y ago
    I'm not sure I understand.
- wtallis 8y ago
  The spherical correction was weakened by half a dioptre, leaving the cylindrical correction unchanged. So for my bad eye, the computer prescription's SPH is -4.75 instead of -5.25. This roughly agrees with the calculator at http://www.computerglassesrx.com/ http://www.computerglassesrx.com/ The PD for near vision is only slightly smaller than for distance vision: 60mm instead of 63mm for me, less than 5% reduction. I doubt it is all that important since I've been using distance vision glasses to read with for decades, but it is a fact that you have to go a little bit cross-eyed to properly focus on something close to you. I think it might help a bit for looking at very small objects just a few inches away, but ditching the glasses entirely works even better for me when I need to read eg. markings on a 4mm IC.