Effects of the Application of Neck Pressure by a Collar or Harness on Intraocular Pressure in Dogs

Pauli, A; Bentley, Ellison; Diehl, Kathryn A.; Miller, Paul E.

doi:10.5326/0420207

Cited by 66 publications

(61 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…We avoided the use of excessive pressure on the cervical region, so that no abrupt changes would be induced in venous return and consequent increase in IOP in an iatrogenic way (Pauli et al 2006).…”

Section: Discussionmentioning

confidence: 99%

Reference values for selected ophthalmic tests of the blue-and-yellow macaw (Ara ararauna)

et al. 2017

View full text Add to dashboard Cite

The aim of this study was to establish reference values for selected ophthalmic diagnostic tests in healthy blue-and-yellow macaws. We investigated a total of 35 adult macaws (70 eyes) of undetermined sex and with an average weight of 1 kg, who were living in captivity in the Federal District, Brazil. Tear production using the Schirmer tear test (STT), normal conjunctival flora, intraocular pressure (IOP) using a rebound tonometer and horizontal palpebral fissure length (HPFL) were evaluated. In this study, 84.1% of samples were positive for microbial growth. Bacteria, fungi and yeasts were isolated, and Staphylococcus spp. (21.9%) and Bacillus spp. (26.8%) were the most frequently isolated microorganisms. The mean value for STT was 7.6±4.6mm/min in the right eye (OD) and 6.6±4.4mm/min in the left eye (OS) (median = 7,11±0,76mm/min). Mean IOP was 11.4±2.5mm Hg OD and 11.6±1.8mm Hg OS (median = 11.49±0.22mm Hg), prior to anesthesia, and 7.6±2.4mm Hg OD and 7.8±1.8mm Hg OS (median 7.71±0.08mmHg) after anesthesia. The IOP was significantly lower when the animals were under anesthesia as compared to when they were conscious (p≤0.05). Horizontal palpebral fissure length was 11.7±0.1mm OD and 11.8±0.1mm OS (median = 11.72±0.07mm). The STT showed a positive correlation with palpebral fissure measurement for this species. These selected ophthalmic reference values will be particularly useful in diagnosing pathological changes in the eyes of blue-and-yellow macaws.

show abstract

Section: Discussionmentioning

confidence: 99%

Reference values for selected ophthalmic tests of the blue-and-yellow macaw (Ara ararauna)

et al. 2017

View full text Add to dashboard Cite

show abstract

“…In the domestic dog, application of pressure on the neck has also been shown to increase IOP. 25,37 In this study, the head was stabilized by holding the beak rather than the neck, and penguins were restrained in such a way that the neck and jugular veins were not compressed, making it unlikely that this factor affected the results.…”

Section: Species (P) a Study In Black-footed Penguins Reported Iop Mmentioning

confidence: 99%

INTRAOCULAR PRESSURE IN SOUTHERN ROCKHOPPER (EUDYPTES CHRYSOCOME) AND MACARONI PENGUINS (EUDYPTES CHRYSOLOPHUS): EVALUATION OF INFLUENCING FACTORS

Woodhouse¹,

Peterson

Schmitt

et al. 2016

Journal of Zoo and Wildlife Medicine

View full text Add to dashboard Cite

Ophthalmic examinations were performed on 160 macaroni penguins (Eudyptes chrysolophus) and 90 southern rockhopper penguins (Eudyptes chrysocome) at eight North American zoos and aquaria. Intraocular pressure (IOP) was measured using rebound tonometry while penguins were held in two different body positions. Correlations between IOP and factors including age, body position, eye pathology, and housing parameters were evaluated. Normal macaroni penguins had a mean IOP of 42.0 ± 9.7 mm Hg. Normal rockhopper penguins had a mean IOP of 32.9 ± 6.2 mm Hg. Neither species had significantly different IOP between sexes or between left and right eyes of the same penguin. In both species, there was a negative linear correlation between age and IOP. In the macaroni population, IOP was significantly higher when IOP measurement was performed before ophthalmic exam; this was not true in rockhoppers. In both species, IOP measured in a horizontal body position was significantly higher than IOP measured in a vertical body position. In both species, eyes with corneal lesions had significantly lower IOP than normal eyes. In the macaroni penguin, eyes with rubeosis iridis had significantly lower IOP than normal eyes. In macaroni penguins, eyes with cataracts had significantly lower mean IOP than normal eyes; this was not true for rockhoppers.

show abstract

“…After treatment, IOP and HPD were recorded every five minutes in both eyes (T5; T10; …T60/65). During all measurements, the animals were handled gently to avoid any tension on the animal's neck which might influence IOP neck (Pauli et al, 2006). All tonometric measurements were performed by the same person employing rebound tonometry with the Tonovet tonometer (TonoVet®, Tiolat Ltd. Finland), using values that were less than a 5% standard deviation among six measurements.…”

Section: Datamentioning

confidence: 99%

Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye

Kovaļčuka¹,

Ilgazs²,

Bandere³

et al. 2017

Open Vet J.

View full text Add to dashboard Cite

The objective of this study was to determine the effects of topical 0.5% tropicamide, 1% atropine sulphate and 10% phenylephrine hydrochloride ophthalmic solutions on intraocular pressure (IOP) and horizontal pupil diameter (HPD) in the dog during the first hour after treatment. Forty clinically and ophthalmologically normal canine patients (between the ages of 2 and 6 years) of varying breed and sex were used in this study. Animals were randomly divided into four groups of ten and given one drop of tropicamide, atropine, phenylephrine or saline into one eye. IOP and HPD were measured in both eyes every 5 minutes for 60 minutes. Tropicamide increased IOP by 8.8±4.0 mmHg 35 minutes post-treatment compared to pre-treatment (P<0.01) only in treated eye. IOP in the contralateral eye did not increase. With atropine the maximum increase in IOP was 2.6±2.8 mmHg at 20 minutes post treatment in the treated eye (P<0.01). IOP in the contralateral eye did not increase. Phenylephrine increased IOP by 2.3±2.1 mmHg (P<0.05) 10 minutes after treatment. Also in the untreated eye IOP increased by 2.3±2.1 mmHg, 20 minutes post-treatment. Maximum HPD in eyes treated with tropicamide occurred at 55 minutes and with atropine at 60 minutes. There were no HPD changes in the contralateral, untreated eye. Topical 10% phenylephrine showed maximal pupil dilation 60 minutes after treatment, but the HPD of the -untreated eye slightly decreased at 15 minutes, but this change only reached statistical significance at 40 min post-treatment (P<0.05). Normal saline showed no influence on IOP or HPD. The drugs investigated here show a significant increase in IOP after mydriatics.

show abstract

Effects of the Application of Neck Pressure by a Collar or Harness on Intraocular Pressure in Dogs

Cited by 66 publications

References 8 publications

Reference values for selected ophthalmic tests of the blue-and-yellow macaw (Ara ararauna)

Reference values for selected ophthalmic tests of the blue-and-yellow macaw (Ara ararauna)

INTRAOCULAR PRESSURE IN SOUTHERN ROCKHOPPER (EUDYPTES CHRYSOCOME) AND MACARONI PENGUINS (EUDYPTES CHRYSOLOPHUS): EVALUATION OF INFLUENCING FACTORS

Changes in intraocular pressure and horizontal pupil diameter during use of topical mydriatics in the canine eye

Contact Info

Product

Resources

About