Final answer:
Sattler's layer is a part of the choroid, while Haller's layer is a part of the sclera. Haller's layer is farther back in the eye and has larger vessels compared to Sattler's layer.
Step-by-step explanation:
The primary difference between Sattler's and Haller's layers in the eye is that Sattler's layer is a part of the choroid, whereas Haller's layer is a part of the sclera. Sattler's layer is located between the outer layer of the retina and the blood vessels of the choroid, while Haller's layer is a deeper layer of the sclera. Haller's layer is farther back in the eye and has larger vessels compared to Sattler's layer.