[Urbane Guerrilla]

Let us also cogitate on "Design" as evidenced: the design of the eye of the Chordata isn't at all the way an engineer would lay it out. The blood supply to the retina is between the light-sensitive cell array and the light it uses?? Developmental defects of the cornea leading to myopia being almost more common than not? The urethra goes through the prostate instead of around it? Sloppy-fit knee joints held together by ligamental straps and nothing much else? And how 'bout that vermiform appendix?

Dr. Pangloss might opine that this is all to cause men to invent better surgery. But then, Pangloss' views on spectacles is too often noted to need repeating here.