ABSTRACT
PURPOSE: To evaluate the change of choroidal thickness and intraocular pressure (IOP) as a result of hemodialysis with chronic renal failure patients. In addition, the correlation between the change of choroidal thickness and IOP were evaluated. METHODS: A total of 48 eyes of 48 chronic renal failure patients undergoing hemodialysis were included in the present study. IOP, blood pressure (systolic and diastolic), serum osmolality, central corneal thickness (CCT), and choroidal thickness were measured before and after hemodialysis. Choroidal thickness was measured using spectral domain ocular coherence tomography (SD-OCT). RESULTS: After hemodialysis, IOP significantly decreased from 14.9 +/- 2.3 mm Hg to 14.3 +/- 2.1 mm Hg (p < 0.001) and choroidal thickness significantly decreased from 352.2 +/- 31.6 microm to 306.6 +/- 29.0 microm (p < 0.001). The other factors that significantly decreased after hemodialysis included serum osmolality (p < 0.001) and blood pressure (p < 0.001) except CCT (p = 0.285). There was a positive correlation between changes in IOP and choroidal thickness after hemodialysis (r = 0.319, p = 0.027). CONCLUSIONS: Decreased choroidal volume and thickness due to fluid loss may be involved in the mechanism of decreased IOP during hemodialysis.
Subject(s)
Humans , Blood Pressure , Choroid , Eye , Intraocular Pressure , Kidney Failure, Chronic , Osmolar Concentration , Renal DialysisABSTRACT
PURPOSE: To report a case of medial canthal tendon fibroma, a rarely observed tumor at the eye or ocular adnexa. CASE SUMMARY: A 47-year-old female visited our clinic with a two-year history of a hard mass in the medial canthal region. On examination, a 7 x 5 mm2 sized, hard and unmovable subcutaneous mass was palpated. The mass was slowly enlarging and the patient had no symptoms including tearing or pain. To confirm the diagnosis, a total excision of the mass was performed under local anesthesia. The tumor was a well-demarcated, 7 x 5 x 2 mm3 sized, white oval mass. The histopathologic examination of the specimen revealed dense collagen bundles with scattered fibroblasts. Based on these findings, the lesion was diagnosed as a fibroma. Although rare, fibromas should be included in the differential diagnosis of medial canthal tumors.
Subject(s)
Female , Humans , Middle Aged , Anesthesia, Local , Collagen , Diagnosis , Diagnosis, Differential , Fibroblasts , Fibroma , TendonsABSTRACT
Here we report a case of central retinal artery occlusion after chiropractic manipulation on the neck. A 49-year old man presented at the hospital because of sudden visual loss in his right eye after chiropractic neck manipulation. He had received chiropractic manipulation of the neck by a chiropractor eight days prior. When he first visited us, his best corrected visual acuity in his right eye was hand motion. A full ophthalmic examination was performed. There was cherry-red spot in the macula in his right eye. We performed a fluorescein angiogram and cervical color Doppler. The arterio-venous transit time in the fluorescein angiogram was delayed, and we detected stenosis of the right internal carotid artery with diffuse atherosclerotic plaques in the right common carotid artery. We prescribed ginko biloba extract (Tanamin). Three years after his first visit, the best corrected visual acuity of his right eye was 20 / 200.
Subject(s)
Humans , Male , Middle Aged , Carotid Artery Diseases/diagnostic imaging , Fluorescein Angiography , Manipulation, Chiropractic/adverse effects , Neck/blood supply , Retinal Artery Occlusion/diagnosis , Vision Disorders/diagnosisABSTRACT
PURPOSE: To report a case of macular injury after exposure to a high energy laser beam used in a laser show. CASE: A 19-year-old female presented 2 days after exposure to a high energy laser beam at a laser show in a night club with decreased vision in her right eye. The patient's best corrected visual acuity of the right eye was hand motion. Fundus examination reveald a retinal swelling in the macular area approximately 5 disc diameter in size and a submacular hemorrhage. Fluorescein angiography of the right eye showed marked hypofluorescence in the macular area and optical coherence tomography (OCT) showed a neurosensory retinal detachment with a macular edema. Three years after exposure, the visual acuity of the right eye improved to 20/600. The fundus revealed scar and depigmented area at the macula. CONCLUSIONS: High-energy laser devices at laser shows should be used carefully with safety education and strict control and can provoke irreversible eye damage if not managed adequately.