@neheller Could you share the rationale for your UWorld QID tag for 404154? And could you share the source of the photo you included in Extra? It isn’t displaying properly for me. I only see an icon but if I know the source, I can replace it. The source is also helpful to know for copyright reasons
That UWorld question describes a two lens system where each lens is defined only by its strength, measured in diopters. I thought it would be good to have a card that defines what a diopter is for those who may not have encountered them before.
The figure, I believe, is a screenshot from Jack Westin, so we probably can’t use it. Sorry about that.