Get access

Reference values for the production of the aqueous fraction of the tear film measured by the standardized endodontic absorbent paper point test in different exotic and laboratory animal species

Authors

  • Rogério R. Lange,

    1. Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, Curitiba–PR, Brazil
    Search for more papers by this author
  • Leandro Lima,

    1. Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, Curitiba–PR, Brazil
    Search for more papers by this author
  • Andreise C. Przydzimirski,

    1. Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, Curitiba–PR, Brazil
    Search for more papers by this author
  • Fabiano Montiani-Ferreira

    Corresponding author
    1. Universidade Federal do Paraná (UFPR), Departamento de Medicina Veterinária, Rua dos Funcionários, Curitiba–PR, Brazil
    2. Michigan State University, Department of Small Animal Clinical Sciences, East Lansing, MI, USA
    Search for more papers by this author

Abstract

The aqueous fraction of the tear film and the horizontal palpebral fissure length (HPFL) were measured in exotic and laboratory animals, specifically saffron finches (Sicalis flaveola), chestnut-bellied seed-finches (Sporophila angolensis), red-eared sliders (Trachemys scripta elegans), rats (Rattus norvegicus) and mice (Mus musculus). These species possess small eyes making it difficult to perform the typical Schirmer tear test. Measurement of the aqueous fraction of the tear was performed using the standardized endodontic absorbent paper point tear test (PPTT), accomplished with manual restraint by a single operator. The following results were obtained: saffron finches (n = 42)—HPFL (4.46 ± 0.09 mm) and PPTT (5.10 ± 0.26 mm); chestnut-bellied seed-finches (n = 38)—HPFL (4.77 ± 0.05 mm) and PPTT (4.11 ± 0.34 mm); red-eared sliders (n = 56)—HPFL (8.59 ± 0.08 mm) and PPTT (8.79 ± 0.38 mm); rats (n = 60)—HPFL (6.45 ± 0.09 mm) and PTT (6.18 ± 2.06 mm); and mice (n = 22)—HPFL (3.59 ± 0.27 mm) and PPTT (4.39 ± 1.45 mm).

Get access to the full text of this article

Ancillary