• If you wear small-sized attires, frames with less than or equal to 48mm of lens-width would fit you comfortably.
• Similarly, for people who go for large-sized clothes, they must opt for spectacles with lens-width or diameter of 53mm or more.
• People who wear M size should get frames between 48mm to 53mm of lens-width.

Broadly, you can also follow the below chart to find your frame size.

Eyeglasses Size Chart