How can we determine that inventors of eyeglasses met most of their design criteria?

To determine that inventors of eyeglasses met their design criteria, we can assess historical documentation and patents that outline their intended purposes, such as improving vision, comfort, and aesthetic appeal. Additionally, analyzing the evolution of eyeglass designs over time reveals how well these criteria were achieved based on consumer feedback and usability. Lastly, the widespread adoption and enduring functionality of eyeglasses indicate that the inventors successfully addressed their design objectives.