An in vitro scanning laser study. The history of studies of avian accommodation. The mechanisms of corneal and lenticular accommodation in the chick eye. The anatomy of the ciliary region of the chicken eye. Different strains of chick have different eye growth responses to visual deprivation.
Constant light produces severe corneal flattening and hyperopia in chickens.
Changes in hydrostatic pressure behind chick and pigeon corneas are insufficient to account for corneal accommodation.