The Barlow Phenomenon

Barlow is a phenomenon that represents a change in the shape of the eye after surgery to correct congenital deformities and eyelid surgery. This phenomenon was described in 1872 by Scottish ophthalmologist Peter Barlow. Ophthalmic surgeons noticed that after eyelid surgery the shape of the palpebral fissures changes, and later cases began to be recorded when the eye, when this muscle was damaged, ceased to see normally.

This condition is called heterophoria. Recorded cases of heterophoria served as the basis for a number of experiments that studied the causes of this change, for which the muscle fibers moving in the eyeball and on the eyelids were studied. The muscle tissue regenerated after the experiment. For some monkeys, the plastic surgery itself caused lifelong heterophoria.

It turned out that the response to surgery is an increase in tone