Canthoplasty refers to a plastic surgery of the medial and/or lateral canthus. The snout is rounded with a sharp canthus. There is a ridge known as a canthus between the snout and the eye. Asian eyes tend to have the inner canthus veiled by the epicanthus. Snout is short, rounded, with angular canthus rostralis. A black line passes from the nostril along the canthus rostralis to the eye. The snout is broad, sharply edged with a distinct canthus rostralis. The canthus rostralis is well-defined. The canthus rostralis is rounded and indistinct. The canthus rostralis is distinct and angular. The snout is obtusely pointed with a feeble canthus rostralis. The eyes are heavy-lidded with both Lacrimal caruncle and canthus indicated. The canthus rostralis and the tympanum are indistinct. Head distinct from neck, with distinct "canthus rostralis". The canthus rostralis is distinct but slightly rounded.