Clinical Signs and Diagnosis of the Canine Primary Glaucomas

Miller, Paul E.; Bentley, Ellison

doi:10.1016/j.cvsm.2015.06.006

Cited by 34 publications

(70 citation statements)

References 40 publications

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“…IOP values may be high in excited, nervous and mobile dogs, especially if they are under severe stress (21). Similarly, IOP may be greatly influenced by excessive pressure exerted on the neck and eyelids during the restriction of the animal for measurement (31).…”

Section: Methodsmentioning

confidence: 99%

“…For this reason, it is necessary to determine an individual IOP value for each animal with each tonometer operating by a different principle (21). For example, in a study on healthy dogs, the IOP value obtained with TonoVet ® was 16.9 ± 3.7 mmHg, whereas the IOP value obtained with Tono-Pen XL ® was 11.6 ± 2.7 mmHg, and the difference between these means was statistically significant (29).…”

Section: Methodsmentioning

confidence: 99%

“…Nowadays, applanation and rebound tonometers are widely used. The principle of operation of the applanation tonometer is based on the force required to flatten the curvature of the corneal surface (21). However, such factors as the central corneal thickness, corneal curvature, corneal .…”

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confidence: 99%

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Measurement of intraocular pressure in clinically normal Turkish Shepherd Dogs with the rebound tonometer (TonoVet®) and the applanation tonometer (Tono-Pen Vet®)

Kulualp¹,

Yurdakul²,

Erol³

et al. 2018

Medycyna Weterynaryjna

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Measurement of intraocular pressure in clinically normal Turkish Shepherd Dogs with the rebound tonometer (TonoVet®) and the applanation tonometer (Tono-Pen Vet®)

Kulualp¹,

Yurdakul²,

Erol³

et al. 2018

Medycyna Weterynaryjna

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“…Glaucoma is one of the retinal and optic nerve diseases that has benefited from OCT evaluation as this technology allows better assessment of changes consistently seen with this disease such as thinning of the neuroretinal rim and retinal nerve fiber layer (RNFL) and cupping of the optic nerve head (ONH) . As some of these structural changes precede visual field loss in humans affected with glaucoma, OCT has become the technology of choice for the diagnosis and progression monitoring of this disease .…”

Section: Introductionmentioning

confidence: 99%

“…1,2,5,6 Glaucoma is one of the retinal and optic nerve diseases that has benefited from OCT evaluation as this technology allows better assessment of changes consistently seen with this disease such as thinning of the neuroretinal rim and retinal nerve fiber layer (RNFL) and cupping of the optic nerve head (ONH). [7][8][9][10][11][12][13][14] As some of these structural changes precede visual field loss in humans affected with glaucoma, OCT has become the technology of choice for the diagnosis and progression monitoring of this disease. 7 Due to the fact that visual fields are not easily assessed in veterinary patients, evaluating the RNFL thickness is of particular relevance to determine glaucomatous changes in the posterior segment of the eye.…”

Section: Introductionmentioning

confidence: 99%

Spectral domain optical coherence tomography evaluation of the feline optic nerve and peripapillary retina

Gomes

Parry

Ledbetter

2019

Veterinary Ophthalmology

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Objective To describe and to establish normative data for the feline optic nerve and peripapillary retina using SD‐OCT (Spectralis® HRA+OCT2). Methods Slit‐lamp biomicroscopy and rebound tonometry were performed in seven male‐intact (0.65 ± 0.02 years;4.34 ± 0.33 kg) and seven female‐spayed (0.74 ± 0.03 years; 3.13 ± 0.28 kg) cats. All eyes were pharmacologically dilated with 1% tropicamide prior to indirect ophthalmoscopy examination. Animals were then placed under general anesthesia. Optic nerve and peripapillary retinal morphology was evaluated using SD‐OCT device by infrared imaging and volumetric scans (circle and radial). Optic disc area, optic cup depth, peripapillary retinal thickness (RT), and retinal nerve fiber layer thickness (RNFLT) were measured. The RNFLT:RT ratio was calculated in the superior, nasal, temporal, and inferior peripapillary region. Results Intraocular pressure in all cats was 20.68 ± 4.87 mm Hg (mean ± SD). Mean RT and RNFL were thickest in the superior retina (264.7 ± 13.95 µm and 70.22 ± 11.78 µm, respectively) (P < 0.0001). Inferior RT was significantly thinner than nasal and temporal retina (P = 0.0013 and P = 0.0010, respectively). The RNFLT:RT was significantly higher in the superior retina (0.27 ± 0.04) (P < 0.0001). Optic disc area OU was 1.39 ± 0.26 mm2. Optic cup depth OU was 168.36 ± 67.74 µm. All parameters tested were not affected by gender, intraocular pressure, body weight, or tested eye. Most eyes had a Bergmeister papilla that was only visible on OCT. Some animals had a recessed area over the center of the ONH meniscus. Conclusion Normative peripapillary ONH OCT data have been introduced. A Bergmeister papillae is commonly seen in young cats on OCT examination. OCT is a helpful tool to evaluate the retina in cats.

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Comparing the behaviour of dogs before and after enucleation due to glaucoma

2021

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Purpose: There is limited literature on owner's attitudes towards enucleation and behavioural changes after enucleation in dogs. The aim of this study is to investigate the owner's perception of canine enucleation as well as gain insight into the behavioural changes of dogs before and after enucleation due to glaucoma. Methods: This retrospective study involved a questionnaire sent to the owners whose dogs were diagnosed with glaucoma and underwent enucleation at the Queen Mother Hospital for Animals between June 2015 and January 2018. Owners were asked about their attitude towards enucleation, and to assess factors that affect their dogs' behaviours (appetite, general activity, playfulness and lethargy) at three time points: before enucleation, immediately after and 2 months after (TMA) enucleation. Results: Twenty‐six of 45 questionnaires were completed and returned by the owners. TMA enucleation showed the most strongly positive responses indicating that owners perceived an improvement in the behaviours of their pets. 96% of participants were happy with their decision to go ahead with the surgery; and no participants regretted opting for enucleation. Conclusion: The present study found expression of “normal” behaviour to increase after enucleation.

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Clinical Signs and Diagnosis of the Canine Primary Glaucomas

Cited by 34 publications

References 40 publications

Measurement of intraocular pressure in clinically normal Turkish Shepherd Dogs with the rebound tonometer (TonoVet®) and the applanation tonometer (Tono-Pen Vet®)

Measurement of intraocular pressure in clinically normal Turkish Shepherd Dogs with the rebound tonometer (TonoVet®) and the applanation tonometer (Tono-Pen Vet®)

Spectral domain optical coherence tomography evaluation of the feline optic nerve and peripapillary retina

Comparing the behaviour of dogs before and after enucleation due to glaucoma

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