Measurement of Tear Production Using the Phenol Red Thread Test in the Common Mynah (<i>Acridotheres tristis</i>)

Rajaei, Seyed Mehdi; mood, Manely Ansari; Khorram, Hamid R.; Ghaffari, Masoud Selk; Williams, David L.

doi:10.1647/2013-079

Cited by 10 publications

(9 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Our mean results in the Livorno breed were similar to those of diurnal raptors (23.5 ± 8.9 mm/15 s) [34], while our mean results in the Siciliana breed were similar to those of large Psittaciformes (OD: 19.8 ± 4.3 mm/15 s; OS: 20.1 ± 3.9 mm/15 s) [35] and to those of the common mynah (19.2 ± 2.5 mm/15 s) [36].…”

Section: Discussionsupporting

confidence: 85%

See 1 more Smart Citation

Tear Production, Intraocular Pressure, Ultrasound Biometric Features and Conjunctival Flora Identification in Clinically Normal Eyes of Two Italian Breeds of Chicken (Gallus gallus domesticus)

Nardi

Leoni

Monticelli

et al. 2021

Animals

View full text Add to dashboard Cite

Given the abundance of chickens in Italy, it is important for veterinarians to know the normal state of chickens’ eyes in order to identify any ophthalmic pathological changes. The aim of this study was to determine the normal values of select ocular parameters and to evaluate conjunctival microflora in two Italian chicken breeds. Sixty-six healthy chickens underwent a complete ophthalmic examination, which included a phenol red thread test (PRTT) for the evaluation of tear production and the assessment of intraocular pressure by rebound tonometry. B-mode ultrasound biometric measurements and conjunctival microflora identification were also performed in twenty-seven chickens. Mean PRTT was 23.77 ± 2.99 mm/15 s in the Livorno breed and 19.95 ± 2.81 mm/15 s in the Siciliana breed. Mean intraocular pressure was 14.3 ± 1.17 mmHg in the Livorno breed and 14.06 ± 1.15 mmHg in the Siciliana breed. Reference ranges for morphometric parameters were reported in the two breeds. Twenty-three chickens (85.18%) were bacteriologically positive. Chlamydia spp. antigen was detected in 14.81% of chickens. No positive cultures were obtained for fungi. Normal reference range values for selected ophthalmic parameters were obtained in clinically healthy chickens, which could facilitate accurate diagnosis and better management of ophthalmic diseases in these animals.

show abstract

Section: Discussionsupporting

confidence: 85%

“…Given that there is an inter-specific difference in normal tear production in birds, reference values for each species need to be established (Table 5) [8][9][10][18][19][20][21][22][23]25,26,29,[34][35][36][37][38][39][40][41][42][43][44][45][46][47].…”

Section: Discussionmentioning

confidence: 99%

Tear Production, Intraocular Pressure, Ultrasound Biometric Features and Conjunctival Flora Identification in Clinically Normal Eyes of Two Italian Breeds of Chicken (Gallus gallus domesticus)

Nardi

Leoni

Monticelli

et al. 2021

Animals

View full text Add to dashboard Cite

show abstract

“…Previously Barsotti and colleagues have shown tear production also in Eurasian Tawny owls, Little owls, Common buzzards, and European kestrels (Barsotti et al, 2013), however, we used the PRTT test instead of STT. A previous study has shown that after positioning of threads in the fornix of upper and lower eyelids, the PRTT values of the common Mynah birds were 17.5±3.1 mm/15 s and 19.2±2.5 mm/15s, respectively, showing a significant difference between PRTT values for upper eyelids and lower eyelids (Rajaei et al, 2015). In our study, we placed PRTT in the lower eyelid and results show 22.59±3.48mm/15s in the cygnet group and 22.5±3.63 mm/15s in all-bird group showing somewhat higher results than the current study.…”

Section: Methodsmentioning

confidence: 87%

Tear production and intraocular pressure values in clinically normal eyes of whooper swans (<i>Cygnus cygnus</i>)

Kovaļčuka¹,

Boiko²,

Williams³

2018

Open Vet J.

Self Cite

View full text Add to dashboard Cite

The objective of this study was to determine the normal range of tear production and values of intraocular pressure (IOP) in clinically normal eyes of whooper swans (Cygnus cygnus). A total of 86 birds: 81 cygnets (6-10 weeks old) and 5 moulting – adult swans (3-6 years old) were examined in this study. Both eyes of all birds underwent a complete ophthalmic examination, including evaluation of tear production with the phenol red thread test (PRTT) and the assessment of the IOP by rebound tonometry, employing the TonoVet® device. The mean ± standard deviation of PRTT values were as follows: all cygnets (81) 22.59±3.48 mm/15s, male cygnets (45) 22.64±3.54 mm/15s, female cygnets (36) 22.53±3.44 mm/15s. IOP was as follows: all cygnets 11.30±3.55 mmHg, male cygnets 10.93±3.56 mmHg, female cygnets 11.74±3.50 mmHg. No statistically significant differences between right and left eye and between female and male cygnets were found for IOP and PRTT values. This study provides the reference values for the PRTT and IOP in healthy whooper swan cygnets, showing that PRTT determination of the tear production and rebound tonometry to evaluate the IOP methods are practical methods for ophthalmic examination in swans.

show abstract

“…A oftalmologia veterinária é uma área de grande importância para o manejo sanitário de animais silvestres e exóticos, devido a grande relevância ecológica e socioeconômica que vem aumentando pelo mercado lícito de animais e ao aumento dos cuidados médicos destinados a estas espécies, nos zoológicos e centros de triagem (Magalhães et al, 2004). Por se tratar em condutas médica diferente e diferentes diagnósticos, a oftalmologia em répteis se desenvolveu muito nos últimos tempos, com vários trabalhos sobre o estudo da anatomia e a fisiologia visual (Colitz et al, 2002;Delgado et al, 2014;Rajaei et al, 2015).…”

Section: Répteisunclassified

Use of non-mammalian models in research the area of ophthalmology

Pereira¹,

Costa

Carvalho³

et al. 2020

Pubvet

View full text Add to dashboard Cite

Com o aumento da importância ecológica e socioeconômica, vem crescendo o uso diferentes animais em pesquisas na área de oftalmologia. O objetivo desta revisão é mostrar a importância do uso destes animais não mamíferos como, exemplo, aves, peixes, anfíbios e répteis. Tendo em vista como consequência a elaboração de um banco de dados de valores de parâmetros fisiológicos em animais hígidos de cada espécie, favorecendo que em casos de rotina clínica de animais exóticos, esses dados possam ser consultados. Previamente ao desenvolvimento de um estudo, o pesquisador deve atentar-se na escolha do modelo experimental, principalmente se a espécie escolhida atinge os objetivos e necessidades do estudo. Em um contexto geral, existe a necessidade de maior utilização de animais não mamíferos para que os dados científicos possam auxiliar nos diagnósticos onde ainda não haja padronização de valores de referência para animais silvestres.

show abstract

Measurement of Tear Production Using the Phenol Red Thread Test in the Common Mynah (Acridotheres tristis)

Cited by 10 publications

References 7 publications

Tear Production, Intraocular Pressure, Ultrasound Biometric Features and Conjunctival Flora Identification in Clinically Normal Eyes of Two Italian Breeds of Chicken (Gallus gallus domesticus)

Tear Production, Intraocular Pressure, Ultrasound Biometric Features and Conjunctival Flora Identification in Clinically Normal Eyes of Two Italian Breeds of Chicken (Gallus gallus domesticus)

Tear production and intraocular pressure values in clinically normal eyes of whooper swans (<i>Cygnus cygnus</i>)

Use of non-mammalian models in research the area of ophthalmology

Contact Info

Product

Resources

About