>> Cajal thought it was to compensate for optical inversion of the images
> projected onto the retinas. See "Recollections of my Life" pp. 470-475.
>> John A. Kiernan
> Department of Anatomy
> Univ. of Western Ontario
> LONDON, Canada N6A 5C1
> e-mail: kiernan at uwo.ca>But you need to compensate for Up-down, not for right-left. ??