Evaluation of electroretinography examination results in dogs

This study includes animal that have been brought to Toulouse National Veterinary School Ophthalmology Clinics between the period of May 2011 and August 2011; and archive cases that have found to have valuable information fort he thesis. 42 eyes of 21 dogs have been examined by Electroretinography (ERG)Whether the animal is referred from a private clinic or it has been send by another colleague inside the hospital detailed history was taken and when it was needed further consultation regarding systemic diseases has been done. The ophthalmologic examination in ophthalmology department include; cotton ball test, manace test, direct pupillary light reflex, joined pupillary light reflex, examination of the eyelids, conjunctivas, nictitating membranes, corneas, irises, lenses end retinas. As an addition to that schirmer eye tear test, and intraocular pressure had been valueted. When the retina could not be observed for examination, if needed, ultrasosnography was performed. hile performing the electroretinography and anesthesia, the procedure that has been used and parameters had been set in the Toulouse National Veterinary School Ophthalmology Clinics was used. After preparation, for 15 minutes the dogs were kept in a darkened room. At the 1st, 5th, 7th and 9th minutes of dark adaptation flash ERG stimulation was conducted. The lights were opened and light adapted graphies were recorded in the second minute of adaptation. The recording were finished with a 13th minute flicker recording.The functional status of all retinas was evaluated. Out of 38 eyes which where clinically diagnosed with cataract, 25 continued with the surgery 8 eyes were not operable due to severe retinal atrophy or detachment. We concluded that, ERG can be frequently used for pre cataract surgery and retinal disease prognosis and it is essential in ophthalmologic diagnostic process for more ideal and precise results.