41 research outputs found
Medial canthoplasty for epiphora in dogs: A retrospective study of 23 cases
The medical records of 23 dogs that underwent medial canthoplasty for treatment of epiphora were reviewed. The most prevalent breed encountered was the shih tzu. Other affected breeds included the Pekingese, Maltese, toy poodle, and pug. All dogs had epiphora associated with medial canthal trichiasis and/or entropion. Other ocular abnormalities included conjunctivitis, keratitis, pigmentary keratitis, corneal ulceration, globe prolapse, and nasal fold trichiasis. After medial canthoplasty, the epiphora resolved in all dogs.The authors thank the veterinarians who referred the dogs, and illustrator Un Gyu Lim for his drawing in the preparation of the illustration
Phacoemulsification and acryl foldable intraocular lens implantation in dogs: 32 cases
This study evaluated the surgical outcome and
complications of phacoemulsification and the implantation
of an acryl foldable intraocular lens (IOL) with a squared
edge in dogs with cataracts. Thirty-two eyes from 26 dogs
were examined. The mean follow up period was 75.9 days
ranging from 23 to 226 days. The complications after
phacoemulsification were posterior capsular opacity (PCO)
around the IOL (n = 11), ocular hypertension (n = 4),
focal posterior synechia (n = 4), hyphema (n = 3) and
corneal ulcer (n = 2). The complications associated with
the IOL were decenteration of the optic (n = 2) and
ventral haptic displacement (n = 1). Most cases of PCO
were found only around the margin of the IOL, and all
eyes had vision during the observation period. In
conclusion, the implantation of an acryl-foldable lens with
a squared edge at the time of phacoemulsification is an
effective method for preserving the central visual field of
dogs with cataract
A modified method for inducing periodontitis in dogs using a silk-wire twisted ligature
This study was designed to assess the effectiveness of a modified silk ligature twisted with wire for inducing advanced periodontitis. Periodontitis was induced in five premolars and one molar of 20 healthy dogs over a 60-day period. The dogs were divided into four groups according to the ligature-inducing materials used: soft moistened food only, wire ligature (WL), silk ligature (SL) and twisted ligature with silk and wire (SWL). Periodontal indices were recorded, and dental radiographs were taken before and after 60 days of ligation. The ligatures were checked daily and the day the ligature fell out was noted. The period during which the ligatures were maintained was significantly shorter for the SL group compared to the SWL group (p < 0.05). Results of the clinical examination showed that almost all periodontal status parameters including the plaque index, gingival index, clinical attachment level, and bleeding on probing were significantly exacerbated in the SWL group compared to the other groups (p < 0.05). Radiographic evaluation demonstrated that alveolar bone levels were significantly lower in the SWL group than the other groups on day 60 (p < 0.05). These results suggested that experimental periodontitis induced by SWL could be an effective method for investigating periodontitis in canine models.OAIID:oai:osos.snu.ac.kr:snu2012-01/102/0000004182/3SEQ:3PERF_CD:SNU2012-01EVAL_ITEM_CD:102USER_ID:0000004182ADJUST_YN:YEMP_ID:A075461DEPT_CD:551CITE_RATE:1.161FILENAME:์ฒจ๋ถ๋ ๋ด์ญ์ด ์์ต๋๋ค.DEPT_NM:์์ํ๊ณผEMAIL:[email protected]_YN:YCONFIRM:
Effects of Atipamezole and Naloxone on Electroencephalographic Spectral Edge Frequency 95 in Dogs Sedated by Acupuncture at GV20 and Yintang Point
The purpose of this study was to evaluate the antagonism of acupuncture-induced sedation by electroencephalographic spectral edge frequency (SEF) 95 in 10 healthy intact male Miniature Schnauzer dogs (4.2-6.1kg; 2-3 years old) without neurological disorder. The GV20 and Yintang acupoints were administered for 20 min. While the dogs were conscious, SEF 95 baseline values were recorded at 2-min intervals for 4 min. Then acupuncture was administered at the GV20 and Yintang acupoints. During the acupuncture procedure, the SEF 95 values were recorded at 2-min intervals for 10 min. Subsequently, antagonist drugs, naloxone and atipamezole, were administered through the cephalic vein. The SEF 95 values were then measured again at 2-min intervals for 10 min. Those values were found to be significantly increased after administration of atipamezole in dogs sedated by acupuncture at the GV20 and Yintang acupoints (p<0.05). However, the SEF 95 values in the naloxone groups did not show any significant changes before and after administration of the antagonist. It was concluded that sedation induced by acupuncture at the GV20 and Yintang acupoints might be partially associated with the ฮฑ2-adrenergic system
Deep anterior lamellar keratoplasty of dog eyes using the big-bubble technique
This study was conducted to establish the feasibility of corneal transplantation using the big-bubble technique (BBT) to perform deep anterior lamellar keratoplasty (DALK) in three dogs. After the cornea was trephined 750 mu m, 4 mL of air was injected, and the blanched stroma was removed to expose Descemet's membrane (DM). The donor corneal button, which was gently stripped off the DM, was sutured onto the bare DM of the recipient cornea. The dogs received topical antibiotics every 6 h for 7 days and 2% cyclosporine ointment every 12 h for 1 month. The eyes were examined post-operatively at 7, 14, 21, 28 and 150 days. The central portion of the transplanted cornea stayed transparent while corneal haze developed around the transplanted margin. Menace response was normal even though the transplanted cornea was edematous until 3 weeks after surgery. A marginal haze was rarely observed between the donor and recipient corneas at 150 days after the operation. A spotted haze developed in the central part of the deep stroma near the DM. Upon histopathological examination, the stroma and epithelium of the donor cornea had normal structures. Corneal transplantation using DALK with BBT can be performed in dogs preserving the healthy endothelium.Y
Optical coherence tomography of the Tokay gecko (Gekko gecko) eye
Objective To provide images of the anterior and posterior structures of the gecko eye using spectral domain optical coherence tomography (SD-OCT). Animals and procedures Eight ophthalmologically normal Tokay geckos (Gekko gecko) were used. The nose-cloaca distance and body weight were measured for each gecko. Tomographic images were obtained using SD-OCT without the use of anesthetic or mydriatic agents. The central corneal thickness (CCT), the anterior chamber depth (ACD), and the length of the conus papillaris (CP) were manually measured using OCT images. The thickness of the retinal nerve fiber layer (RNFL) around the CP and the retinal thickness in all four quadrants (superior, nasal, inferior, and temporal areas) were automatically measured using the OCT software program. Results The mean values of the nose-cloaca distance and body weight were 13.8 +/- 0.9 cm and 41.3 +/- 9.0 g, respectively. The mean values of CCT, ACD, and CP length were 177.6 +/- 20.9 mu m, 1205.0 +/- 79.9 mu m, and 1546.4 +/- 208.8 mu m, respectively. The mean value of RNFL thickness was 52.0 +/- 8.2 mu m, and the superior region was the thickest. The mean value of total retinal thickness was 202.5 +/- 9.4 mu m, and the temporal region was the thickest. Conclusions Tomographic images of the anterior and posterior segments of the living gecko eye could be obtained using the OCT unit. Multiple retinal layers and anatomical features of the CP were identified.N
Optical coherence tomography of the Tokay gecko ( Gekko gecko
Objective To provide images of the anterior and posterior structures of the gecko eye using spectral domain optical coherence tomography (SD-OCT). Animals and procedures Eight ophthalmologically normal Tokay geckos (Gekko gecko) were used. The nose-cloaca distance and body weight were measured for each gecko. Tomographic images were obtained using SD-OCT without the use of anesthetic or mydriatic agents. The central corneal thickness (CCT), the anterior chamber depth (ACD), and the length of the conus papillaris (CP) were manually measured using OCT images. The thickness of the retinal nerve fiber layer (RNFL) around the CP and the retinal thickness in all four quadrants (superior, nasal, inferior, and temporal areas) were automatically measured using the OCT software program. Results The mean values of the nose-cloaca distance and body weight were 13.8 +/- 0.9 cm and 41.3 +/- 9.0 g, respectively. The mean values of CCT, ACD, and CP length were 177.6 +/- 20.9 mu m, 1205.0 +/- 79.9 mu m, and 1546.4 +/- 208.8 mu m, respectively. The mean value of RNFL thickness was 52.0 +/- 8.2 mu m, and the superior region was the thickest. The mean value of total retinal thickness was 202.5 +/- 9.4 mu m, and the temporal region was the thickest. Conclusions Tomographic images of the anterior and posterior segments of the living gecko eye could be obtained using the OCT unit. Multiple retinal layers and anatomical features of the CP were identified.N
Effects of Electroacupuncture on Intraocular Pressure and Hemodynamic Parameters in Isoflurane Anesthetized Dogs
The effects of electroacupuncture (EA) on intraocular pressure (IOP) and hemodynamic parameters were evaluated in isoflurane anesthetized 10 (5 males, 5 females) normal mongrel dogs (8.1-9.8 kg, 6-8 years old). After determination of baseline IOP and hemodynamic parameters (cardiac index, systolic arterial pressure, diastolic arterial pressure, heart rate and systemic vascular resistance index), EA was applied at 3 acupoints (LI-4, LIV-3 and GB-37) for 20 min. After the EA treatment, IOP was significantly decreased in the both eyes (p<0.05). However, there were not significant differences in hemodynamic parameters between those of before and after EA treatment. From these results, the EA treatment at LI-4, LIV-3 and GB-37 would be considered one of the valuable methods for the IOP treatment in dogs