In PD-82II digital pupil distance meter LED lamp eliminates troublesome lamp replacement and also makes battery life become as 3～4 times as longer than the older model and lever action becomes much ...

In elite athletics, physical ability may be what gets you to the start line—but it’s often the mental side that determines who crosses the finish line first. Nowhere is this more apparent than in ...

Getting into virtual reality is exciting, but sometimes things just don’t feel quite right. Maybe the picture seems a little blurry, or you get a headache after a while. Often, the fix is simpler than ...

It has very fast point-to-point geo-distance calculations. It uses only 1 Longitude based trig call, once! And, it is usually more accurate than Haversine (it is an approximation of a more accurate ...

I should be used to sticking odd contraptions on my head during plane flights. I’ve planted a Meta Quest 3S and Apple Vision Pro over my eyes as my in-flight entertainment and tried not to get motion ...

Unlike adults, children’s visual systems are still maturing, so their frames, lenses, and prescriptions must be selected with extra care to ensure both function and comfort. When it comes to the fit ...

This Japanese-made image-stabilized binocular is a best-in-class example for anyone looking for a portable device that’s impressively sharp. You’ll pay top dollar for its fully automatic Vibration ...

For a long time, European optics manufacturers did not configure their rifle scopes to best suit American hunters. Their scopes were often large and heavy with bold reticles positioned in the first ...

There's a module for v12 that makes a drag ruler that is color coded in green/yellow/red, could something like that be made default in the 5e system with the new version of Foundry? There's also a ...

Many soon-to-be retirees are a bit blurry with what Medicare does and doesn’t cover when it comes to vision care. The good news is that Medicare covers most medical issues like cataract surgery, ...