The eye of the giant anteater (Myrmecophaga tridactyla): Ophthalmic examination findings and diagnostic tests.

Objective: To describe ophthalmic examination and diagnostic values for Schirmer tear test (STT), intraocular pressure (IOP), corneal horizontal diameter (CHD), palpebral fissure length (PFL), fundoscopy, and palpebral conjunctiva microbiota from healthy giant anteaters.

Animals Studied: Twelve giant anteaters (Myrmecophaga tridactyla), 11 adults and one juvenile, five males and seven females.

Procedures: The animals were submitted to general anesthesia and ophthalmic evaluation with portable slit-lamp biomicroscope, Finoff transilluminator, and fundoscopy, as well as STT, bacterial culture from palpebral conjunctiva, rebound tonometry IOP, and measurement of PFL and CHD.

Ocular examination findings and measurements of tear production and tonometry of ring-tailed coatis (nasua nasua).

Objective: To describe ocular anatomical features and to determine tear production and tonometry in normal anesthetized ring-tailed coati (Nasua nasua).

Animals: Eight male and seven female ring-tailed coatis (30 eyes) were evaluated, with ages ranging from 7 months to 10 years old.

Procedures: The animals were anesthetized with isoflurane and had STT 1, rebound and applanation tonometry, and palpebral fissure length (PFL) measured in both eyes.

Ophthalmic contributions to assessing eyes of two neotropical canids: Cerdocyon thous and Chrysocyon brachyurus.

Objective: To describe selected ophthalmic tests and anatomical features of eyes of crab-eating foxes (Cerdocyon thous) and maned wolves (Chrysocyon brachyurus).

Animals Studied: Six crab-eating foxes (12 eyes), eight maned wolves (16 eyes).

Procedures: Intramuscular and/or inhalatory anesthesia, ophthalmic evaluation with portable slit-lamp biomicroscope, Schirmer tear test (STT), intraocular pressure measurement with rebound and applanation (crab-eating fox only) tonometers, measurement of palpebral fissure length (PFL), gonioscopy, and fundoscopy.