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WSVA7-0060 OPHTHALMOLOGY
DIAGNOSIS OF GLAUCOMA WITH OCT
A. Dobos1, B. Pengő1, L. Valker-Takács2, Z. Hadnagy2, A. Dobos1
1Kisér Veterinary Ophthalmologic Clinic, Szentes, Hungary
2Kisér Veterinary Ophthalmologic Clinic, Budapest, Hungary
Introduction
Glaucoma is a neuro-degenerative disease. The cells
of the retina and optic nerve head damage and die usually as a result of high intraocular pressure. The examination of retina usually take place with direct or indirect opthalmoscope and fundus camera in veterinary practice. There is a new tool in opthalmic diagnostic the optical coherence tomography (OCT). With this device we are able to examine all of the layers of the retina almost in histological level.
Objectives
Our goal is to introduce the importance of the OCT in the early diagnosis of glaucoma.
Methods
WSVA7-0061 OPHTHALMOLOGY
EARLY DIAGNOSIS OF PROGRESSIVE RETINOPATHY WITH OPTICAL COHERENCE TOMOGRAPHY
A. Dobos1, B. Pengő1, L. Valker-Takács2, Z. Hadnagy2, A. Dobos1
1Kisér Veterinary Ophthalmologic Clinic, Szentes, Hungary
2Kisér Veterinary Ophthalmologic Clinic, Budapest, Hungary
Introduction
The PRA is a genetic disorder. It is causes the degeneration and death of the cone and rod cells of
the retina. These cells develop normally in early life, but after a time firstly the rod then the cone cells begin to damage and die. The examination with opthalmoscope and fundus camera do not make it possible to detect fine canges thus do not support the detection of progressive retina atrophy (PRA) the early signs of which appear in the retina.
Objectives
Our goal is to introduce the importance of the OCT in the early diagnosis of PRA.
Methods
The principle of operation of the Optical Coherence Tomography (OCT) is very similar to the ultrasound with one major difference, that in case of the OCT the physical wave originates from a special light source. In our study we used fourier domain OCT.
Results
In our study we examined 52 dogs between the age
of 7 months to 12 years old. We took OCT pictures at different stages of PRA. We observed the retinal thinning, while the structure got disrupted. In some cases we observed retinal detachment and liquid between the layers.
Conclusions
With Optical Coherence Tomography we are able to detect fine lesions. This make possible to begin the therapy earlier and slows down the degeneration of the cells.
The principle of operation of the Optical Coherence Tomography (OCT) is very similar to the ultrasound with one major difference, that in case of the OCT the physical wave originates from a special light source.
Results
In our study we used fourier domain OCT. The examination was performed in anasthesia. We examined 102 dogs. The age of dogs was between 3 weeks and 15 years old. We took OCT pictures at different stages of glaucoma. We observed the retinal thinning and ganglion cell layer thinning.
Conclusions
With Optical Coherence Tomography we are able to detect fine lesions. This make possible to begin the therapy in time. The sooner we start the therapy the fewer cells get damaged or die in the Ganglion Cell Complex.
An Urban Experience
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