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Inherited retinal degeneration in a Bengal cat
Jeong, Manbok,Narfstrom, Kristina The Korean Society of Veterinary Science 2018 大韓獸醫學會誌 Vol.58 No.4
A 2-year-old intact female Bengal cat was presented with a 6-month history of visual impairment. The cat manifested bilateral negative menace responses and dazzle reflexes and sluggish pupillary light reflexes. Bilateral fundus changes included generalized tapetal hyperreflectivity, advanced retinal vascular attenuation, and increased pallor of the optic disc. A diagnosis of bilateral retinal degeneration was made. The clinical findings suggest that the investigated Bengal cat was most likely to have an inherited retinal degeneration. Further studies of the Bengal cat breed are needed to determine the prevalence of inherited retinal degeneration in this breed in Korea.
Manbok Jeong 한국임상수의학회 2023 한국임상수의학회지 Vol.40 No.4
A 4-year-old female Munchkin cat presented with a 2-day history of a large mass in the left eye. On the first presentation, slit lamp biomicroscopy re- vealed a large corneal bulla occupying around 40% of the corneal surface along the visual axis. Based on the results, a diagnosis of feline acute bullous keratopathy was made. Due to the location of the extensive corneal bulla, autologous lamellar keratoplasty was performed based on prior studies, to both minimize postopera- tive complications that may affect axial vision and address any cosmetic concerns the owner had. The autologous lamellar keratoplasty successfully resolved the cor- neal bulla with no signs of corneal opacities postoperatively. Therefore, autologous lamellar keratoplasty may be a useful surgical treatment for feline acute bullous keratopathy from both the tectonic and optical points of view.
Primary Angle-Closure Glaucoma in a Maltipoo Dog
Manbok Jeong 한국임상수의학회 2023 한국임상수의학회지 Vol.40 No.3
A two-year-old spayed female Maltipoo dog was presented with a two-month duration of glaucoma in the right eye. On the first presentation, menace response and dazzle reflex were absent in the right eye, but it was pres- ent in the left eye. Slit-lamp biomicroscopy showed buphthalmia, mild corneal edema, and conjunctival and episcleral hyperemia in the right eye. The intraoc- ular pressures were 70 mmHg and 30 mmHg in the right and left eyes, respec- tively. On the gonioscopic and high-resolution ultrasound examinations, both the iridocorneal angle and ciliary cleft were completely closed in the right eye. However, gonioscopy revealed an opened iridocorneal angle even with some broader base of pectinate ligament fiber, but high-resolution ultrasound showed a narrowed ciliary cleft and increased contact of the iris base with the limbal cor- nea in the left eye. Based on these results, a diagnosis of primary angle-closure glaucoma was made in both eyes. This case report highlighted the importance of evaluating the ciliary cleft with high-resolution ultrasound as a critical diag- nostic and prognostic role in canine glaucoma.
Goniodysgenesis-associated glaucoma in a Jindo dog
Jeong, Manbok,Narfstrom, Kristina The Korean Society of Veterinary Science 2019 大韓獸醫學會誌 Vol.59 No.2
A 10-year-old intact female Jindo dog was presented with a 1-week history of conjunctival redness and ocular discharge in the left eye. There was an absence of menace response, dazzle reflex, and direct pupillary light reflex. Slit-lamp biomicroscopy revealed corneal edema, ciliary flush, and aqueous flare. Intraocular pressure was 68 mmHg. Based on the information available, a diagnosis of glaucoma and uveitis was made. Subsequent histopathologic examination showed the glaucoma was produced by the effects of goniodysgenesis, posterior synechia, and pigment dispersion in the trabecular meshwork. This is the first report of primary glaucoma caused by goniodysgenesis in Jindo dogs.
Treatment of descemetocele with combined deep keratotomy with a nictitating membrane flap in a dog
Manbok Jeong 대한수의학회 2023 大韓獸醫學會誌 Vol.63 No.2
A 10-year-old, spayed female, Maltese dog presented with a 2-day history of severe left eye squint. Slit-lamp biomicroscopy showed a deep corneal defect stained into a doughnut shape together with hypopyon in the anterior chamber. Based on these results, a diagnosis of descemetocele and uveitis in the left eye was made. Deep keratotomy combined with a nictitating membrane flap effectively resolved the descemetocele without complications. The surgical procedures performed on this patient were easy and effective, and could be used as an alternative to graft surgery for descemetocele treatment.
LIDAR를 이용한 Object classification 및 객체 특징점 추출
정우재(WooJae Jeong),박만복(Manbok Park) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
LIDAR(Light detection and ranging)는 빛의 반사를 이용하여 LIDAR로부터 객체까지의 거리를 측정하는 장치이다. LIDAR가 부착된 자율주행차량은 운행 중에 보행자, 차량 등과 같은 중요한 객체들을 인식한다. 그러나 LIDAR 센서는 운행에 필요한 객체 정보를 검출함과 동시에 필요하지 않은 객체 정보도 검출한다. 본 논문에서는 LIDAR의 채널에 따라 달라지는 객체의 특징을 분석하여 운행에 필요한 객체와 필요하지 않은 객체를 분류하는 알고리즘을 소개한다. 이 알고리즘은 차량의 운행상황에 필요한 정보만을 처리하여 연산시간 단축 및 인식 오류를 줄일 수 있다. 본 논문의 연구결과는 향후 이동객체, 고정객체 판단 알고리즘 설계에 토대가 되며 정밀지도와의 융합에도 적용 될 수 있다.
객체 인식 알고리즘 향상을 위한 고정물체 이동물체 구분 방법
정우재(Woojae Jeong),박만복(Manbok Park),김시한(Shihan Kim) 한국자동차공학회 2018 한국자동차공학회 학술대회 및 전시회 Vol.2018 No.11
LIDAR(Light detection and ranging)는 빛의 반사를 이용하여 LIDAR로부터 객체까지의 거리를 측정하는 장치이며, 자율주행 인식 알고리즘에서 아주 중요한 역할을 하는 센서이다. LIDAR가 부착된 자율주행차량은 운행 중에 보행자, 차량 등과 같은 중요한 객체들을 인식하며, 위 객체들을 Point Cloud 정보로 고정객체와 이동객체로 분류하는 알고리즘은 중요하다. 자기차량과 상대객체간의 상대속도 차이를 이용하여 고정, 이동객체를 구분하는 기존 방식은 상당한 오차가 존재하였다. 본 논문에서는 고정물체와 이동물체 구분의 오차를 개선하는 알고리즘을 개발하고실차 사업을 통해 검증했다.
Orbital exenteration for a third eyelid gland carcinoma in a dog
Park, Yoonji,Kang, Seonmi,Jeong, Manbok,Park, Jungyun,Seo, Kangmoon The Korean Society of Veterinary Science 2018 大韓獸醫學會誌 Vol.58 No.4
A 13-year-old neutered male Poodle dog was presented with a third eyelid mass in the left eye. The dog had undergone local resection of the mass about a year prior in a private practice. On cytological examination, the mass was diagnosed as adenocarcinoma. Although lung and lymph node metastases were suspected, based upon the computed tomographic results, exenteration was performed to relieve chronic pain and to improve the dog's quality of life. Exenteration carried a good prognosis with no tumor recurrence until 1 year and 10 months after surgery, when local recurrence occurred near the left zygomatic arch.