News for hackers. Stuff that matters.

A comment on Do your eyes bug you even though your prescription is "correct"?. Parent comment

Re:Do your eyes bug you even though your prescription is "co... by fy20 on Saturday March 08, 2025 @10:50AM (#43301103)
A few years ago an optician convinced me to get some fancy 1.67 index lenses, but I couldn't deal with the chromatic abrasion. The text at the peripheral parts of my monitor were clearly split into their RGB components. For frontend work it was impossible, as I couldn't tell if something was not aligned or it was just the chromatic abrasion.

Now I always go for the thickest lenses (which are also usually the cheapest) for this reason. My prescription is -3.75, and there isn't any noticeable difference with thinner lenses.

[ Parent | on HN ]
Re:Do your eyes bug you even though your prescription is "co... by dnh44 on Saturday March 08, 2025 @11:16AM (#43301269)
All the high index lens materials suffer from chromatic aberration.

The lens material you've now chosen actually has the best optical properties out of all the plastic lens materials. Its only downside is that the refractive index is only 1.5 which does mean they will be a little bit thicker than the high index ones.

You could also try a material called Trivex which also has low chromatic aberration while being a little thinner than the material you are using which is called CR-39

[ Parent | on HN ]
Re:Do your eyes bug you even though your prescription is "co... by fsckboy on Saturday March 08, 2025 @11:04AM (#43301195)
chromatic aberration

https://en.wiktionary.org/wiki/aberration#Noun

[ Parent | on HN ]