I keep getting ads for sunglasses with inverse lenses (curving inwards instead of outwards). The marketing is not very clear about the benefits, if any.
In: 0
Former optician here. There is no benefit and many negatives. The refraction of the lenses get extremely messed up and your vision would be impaired. Maybe they use flat lenses?
From what I can tell, they are being intentionally vague with what benefits it bestows. If it had a clear and definite benefit, they would extol it. So this seems like a marketing gimmick
This is the first I’ve heard of it, so I looked up “sunglasses with inverted lenses” and found that Ray-Ban has started making some glasses like this.
As far as I can tell, at least on Ray-Ban’s part, it’s a purely aesthetic choice.
I.e.:
Prescription lense either have a roughly 👁️`)(` shape or a 👁️`()` shape for vision correction… and nonprescription sunglasses tend to have either 👁️`||` or 👁️`))` shaped lenses which don’t bestow any correction… whereas these new sunglasses have a 👁️`((` shape to create an interesting new style – again, with no correction.
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