The BO is there with the minus lens, it's just more difficult to notice. Spot up the OC and draw a vertical diameter line through it to the edges and you'll better see it. It's slight, only about...
I do a fair amount of Fresnel press on prisms for patients newly experiencing diplopia to trial prism correction. I have such a hard time getting them to look completely clear with no bubbles. I...
Don't argue and don't show any negative emotion. I do still offer and explain what each lens feature, like AR, does and why I recommend it. With Transitions, I do make sure to let people know they...
So I took a +3.50 and -3.50 and tilted them wrap style against a flat plane. I have to say... the mystery only gets thicker; the plus lens cleary produces a BO result, while the minus appears to keep...