This review discusses a new medical theory that tries to explain that the 17th century Dutch master may have had one misaligned eye.

Apparently "the eye on the right side of the painting tends to look straight ahead and the other eye deviates outward," according to a letter published in the Sept. 16 issue of The New England Journal of Medicine.

Apparently this is known as "stereoblindness" and has the same effect as closing one eye, which is what artists do as they try to create three-dimensional images on flat surfaces.

Advantage Rembrandt!

More here.