A4-year-old spayed female Cavalier King Charles spaniel dog was examined at the ophthalmology service at the Western College of Veterinary Medicine for evaluation of white spots in the corneas. The menace responses, palpebral, occulocephalic, and direct and consensual pupillary light reflexes were present bilaterally. Schirmer tear test (Schirmer Tear Test Strips; Alcon Canada, Mississauga, Ontario) values were 22 mm/min bilaterally. The intraocular pressures were estimated with a rebound tonometer (Tonvet; Tiolat, Helsinki, Finland) and were 17 and 18 mmHg in the right and left eye, respectively. Fluorescein staining (Fluorets; Bausch & Lomb Canada, Markham, Ontario) was negative bilaterally. On direct examination there were 3 mm diameter, dense, oval, refractile, white opacities in the axial corneas of both eyes. Biomicroscopic examination (Osram 64222; Carl Zeiss Canada, Don Mills, Ontario) revealed the opacities to consist of multiple fine crystalline particles located in the superficial corneal stroma. Following application of 0.5% tropicamide (Mydriacyl; Alcon Canada, Mississauga, Ontario) indirect ophthalmoscopic (Heine Omega 200; Heine Instruments Canada, Kitchener, Ontario) examinations were completed bilaterally and abnormalities were not detected. A photograph of the right eye at presentation is provided for your assessment (Figure 1).
展开▼
机译：在西部兽医学院的眼科服务中检查了一只4岁大的雌性骑士查尔斯国王西班牙猎狗狗，以评估角膜中的白斑。双边都有威胁反应，睑板，头颅，直接和自愿的瞳孔光反射。 Schirmer撕裂试验（Schirmer Tear Test Strips;爱尔康加拿大公司，密西沙加，安大略省）的双边测量值为22 mm / min。用回弹眼压计（Tonvet; Tiolat，赫尔辛基，芬兰）估计眼压，右眼和左眼分别为17和18 mmHg。荧光素染色（Fluorets;加拿大博士伦，安大略省万锦市）双侧阴性。直接检查时，两只眼睛的轴向角膜直径为3毫米，呈致密，椭圆形，屈光性，白色混浊。生物显微镜检查（Osram 64222;加拿大卡尔·蔡司，唐·米尔斯，安大略省）显示该混浊由位于表层角膜基质中的多个细小晶体颗粒组成。在应用0.5％托吡卡胺（Mydriacyl; Alcon Canada，密西沙加，安大略省）进行间接检眼镜检查（Heine Omega 200; Heine Instruments Canada，Kitchener，安大略省）后，双侧检查均已完成，未发现异常。提供演示时右眼的照片以供您评估（图1）。
展开▼
