Why do Progressive Lenses have Blurry Edges?? (OR) Why do Varifocals Have Distortion?

#shorts

This short video explains the physics behind distortion in your varifocals. Make sure to subscribe for more informative videos about optics!

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[abhiabhi]

Great info! In my recent interactions at my opticians, their focus was on selling more expensive/lower distortion advanced lenses. No one told me about the effect of frame size!

[miho]

I love your glasses. They suit you. May I ask which brand?

[RWCMail]

I bought a larger frame that had larger lenses and took them to two different optometrists, and neither place could create a good progressive pair of progressive glasses. Both created the same problem. The distance upper part was perfect, but just below the distance part was an area that was blurry no matter what I was looking at. The good intermediate and reading areas were very low in the lens, causes me to hold my head way back to use them on a computer, which was not acceptable. I've had 3 pairs of progressive glasses in the past 20 years that were very good. They were all small frame glasses. My current optometrist thinks he can fix the problem, so I'll give him one more chance, if not I'm going back to small frame for my progressive.

[johnfr]

Please make a video to quantify all this (approximately, obviously). Impact of ADD value (+1.00 vs +2.00, , etc.) and of lens size (30mm vs 35mm, etc) on field of vision. And compare on the field of vision difference by going from standard to premium progressive lenses.

[NSileno]

I thought you did a video where round glasses were promoted to deal with high prescription but perhaps that’s high without being progressive. So would an aviator be best for -7 progressives?

[KimberlySenatore]

Actually - as someone who has worn progressives for a long time - I have found the larger the lense - the larger the distorsion!!!! What he doesn't tell you is the lenses are made so you are looking thru on hourglass - and everything outside the hourglass is distorted. This makes it so you have NO PERIPHERAL VISION! Unsafe if you are driving. Progressives have been around for a real long time, you think they would fix this. And also keep in mind - the larger the frames the heavier the lenses (even the thinest lense). Makes it very uncomfortable for people who have very strong prescriptions.

[CarlaBB]

What is considered to be a larger frame size? 54 - 55mm?

[ccooper]

I figured this out myself after specsavers allowed me to buy my 1st pair of varifocals without comment or advice. My prescription was -6.5 distance with +2 for reading. The entire lens height was only 1.5 inches. Needless to say they were a complete disaster as they were unwearable.

[PABLOSGHOST]

Do they actually have the lines on the glasses ? Or is that for example purposes only 😊

[beckerborg]

Hi. What size glasses would you suggest? I don’t care for the transition between farsightedness and nearsightedness it in my current glasses. Thank you

[DimesDaDevil]

Cool info larger glass less distortion

[sudhirchandra]

what about digital progressive instead of traditional progressive

[sudilos]

Makes sense! I think allot of glasses should have large frames because it actually is like wearing Ski goggles all day long. Narrow Field of View

[gaylecheung]

Not with my prescription 😂HAPPY NEW YEAR

[LuciaClarke]

Made you 100 like and im gettin progresívne glasses

[brendapaul]

Why do I feel Short after putting on my progressive lens for the first time? I see The streets closer up