Certified Ophthalmic Assistant Practice Exam

The triangular corners where the upper and lower eyelids meet are called canthi. There are two canthi in each eye: the medial canthus, which is located towards the nose, and the lateral canthus, which is located towards the ear. These structures are important in the overall anatomy of the eyelids and play a role in the drainage of tears as well as maintaining the proper function of the eyelids in protecting the eye. The other terms refer to different aspects of eye anatomy. Fovia likely refers to the fovea, which is a small pit in the retina providing sharp central vision, rather than referencing any specific eyelid structure. Palpebrae is another term for the eyelids as a whole, but does not denote the corners where the eyelids meet. Conjunctiva refers to the membrane that covers the white part of the eyeball and the inner surface of the eyelids, which is also unrelated to the specific corners of the eyelids.