Abstract
ABSTRACT: This study aimed to describe strip meniscometry test values for Amazona aestiva (turquoise-fronted amazon), Ara ararauna (blue-and-yellow macaw) and Caiman latirostris (broad-snouted caiman). Twenty-one Amazona aestiva and 11 Ara ararauna, healthy, adults of unknown sex, and 37 healthy adult Caiman latirostris (27 males and 10 females), were used in this investigation. All animals were manually restrained and I-Tear® Test strip was inserted for 5 s at the edge of the lower tear meniscus, without touching the eyelid or ocular surface, immediately followed by measurement (millimeter per 5 seconds). No differences were reported between left and right eyes for Amazona aestiva (P = 0.824), Ara ararauna (P = 0.262) and Caiman latirostris (P = 0.679). Median and confidence interval were 2.0 (2.25-3.56) mm/5s for Amazona aestiva, 3.0 (2.93-4.15) mm/5s for Ara ararauna and 3.0 (2.55-4.90) mm/5 s for Caiman latirostris. These values for strip meniscometry tear test can be used as parameters for each species and may be helpful for diagnosis and treatment of tear-production disorders in birds and reptiles.
Highlights
The corneal and scleral surface are covered by the tear film which possess a protective function and nutritional properties for maintenance of ocular health (ROLANDO & ZIERHUT, 2001)
This study aimed to describe strip meniscometry test values for Amazona aestiva, Ara ararauna and Caiman latirostris
Median and confidence interval were 2.0 (2.25–3.56) mm/5s for Amazona aestiva, 3.0 (2.93–4.15) mm/5s for Ara ararauna and 3.0 (2.55–4.90) mm/5 s for Caiman latirostris. These values for strip meniscometry tear test can be used as parameters for each species and may be helpful for diagnosis and treatment of tear-production disorders in birds and reptiles
Summary
The corneal and scleral surface are covered by the tear film which possess a protective function and nutritional properties for maintenance of ocular health (ROLANDO & ZIERHUT, 2001). Establishment of lacrimal production values is an important tool for routine semiotechnique, and for wild animals Schirmer tear test (STT), endodontic absorbent paper point tear test (EAPPTT) and phenol red thread tear test (PRTT) can be used (ORIÁ et al, 2013a, 2013b; MONÇÃO-SILVA et al, 2016a, 2016b; FALCÃO et al, 2017a, 2017b). These evaluations are similar once the test strips are inserted in the conjunctival sac, for basal and reflex tear quantification, without anesthetic eye drops (TROST et al, 2007). Studies estimate that the region of tear meniscus may contain up to 90% of the total volume of tear fluid in humans
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