We love glasses almost as much as we love physics.
Fitting glasses is a science. The most important parameter to consider is your prescription. Are you near sighted? Far sighted? And by how much?
Once made, the edges of the lenses will show especially with higher prescriptions. A plastic frame will hide the edge of a near sighted lens better than a metal frame. If you are far sighted, a plastic frame may hold the lenses more securely and allow the center of the lens to be thinner for better optical clarity.
For best optical clarity, your lenses should be measured by an optician so the center of the lens is directly in front of the center of the pupil. This allows light to enter the eye where the prescription is most precise.
Now for the frame. The fit of the frame matters. And matters a lot. Not just for aesthetics, but to improve the physics as light passes through the lenses into the eye. The best physics is achieved with digital lenses where the lenses are made specifically for the size of the frame and your face.
And speaking solely physics, picking a frame too small can impair how a progressive (no-line bifocal) lens works. Picking a frame too big, can create glare and distortion. There’s not just the frame width . . . but the depth of the frame, space for the nose, an evaluation of where the frame sits relative to the eyes and nose, the tilt of the lenses, the distance between your eyes, and how long the arms that tuck behind the ears.
Feeling overwhelmed? No problem. We are here to help. We would love to hear from you! 510-893-5566
Your physics nerd,
Dr Gill
