A thing which people who’ve never met me in person don’t know: I have strabismus. That’s the medical term (synonym: heterotropia), but most people would better know this as being cross-eyed, or having a lazy eye. My eyes generally point in roughly the same direction, but when I’m tired or I’ve been drinking, one of them tends to drift outward.
During childhood, I had three surgeries to try and correct the problem, two monolateral and one bilateral, for a total of two muscle tuck procedures per eye. (‘Muscle tuck’: the surgeon goes in and folds over a muscle to shorten it, stitching the fold into place, in order to try and force the eyes back into alignment.) Each surgery was followed with and/or preceded by some eyepatch therapy (to try and strengthen the ‘lazier’ eye) and by constant exhortations from my parents to pay attention to looking at things with both eyes. Continue reading “Thinking about seeing in stereo”