Transpupillary Thermotherapy in Circumscribed Choroidal Hemangioma

PURPOSE: We described a patient with decreased vision due to circumscribed choroidal hemangioma and the patient was treated with transpupillary thermotherapy. METHODS: A 40-year-old male with circumscribed choroidal hemangioma combined with serous retinal detachment involving macula was managed by 2 sessions of transpupillary thermotherapy with 810 mm infrared diode laser. RESULTS: Improvement of central visual acuity, atrophy of circumscribed choroidal hemangioma and reabsorption of serous retinal detachment were observed without any complication during 6 months follow up period after 2 sessions of transpupillary thermotherapy. CONCLUSIONS: Transpupillary thermotherapy is a safer and alternatively effective treatment in circumscribed choroidal hemangioma with serous retinal detachment rather than ordinary photocoagulation or radiotherapy.

The Usefulness of Standard Electroretinogram in Classification of Central Retinal Vein Occlusion

PURPOSE: Central retinal vein occlusion is classified as ischemic and non-ischemic types. Ischemic type has poor visual prognosis because of neovascular complications. Fluorescein angiography shows lower reproducibility and predictability of neovascularization and has complications although it has been the standard method for classification. This study was made to determine the usefulness of the electroretinogram (ERG) in the classification and predictor of neovascularization. METHODS: Forty-two eyes with central retinal vein occlusion were classified as ischemic and non-ischemic groups by means of indirect ophthalmoscope and fluorescein angiography finding. All patients were examined with standard electroretinogram and followed. During the follow-up period, development of neovascularization was evaluated. All parameters of electroretinogram were analyzed. RESULTS: Compared to the control group, a and b wave amplitudes in maximal combined response, b/a ratio, b wave amplitude in cone response, and b wave implicit time in 30Hz flicker response showed statistically significant difference in only ischemic central retinal vein occlusion (P<0.05). Compared to the control group, a and b wave amplitudes in maximal combined response, b/a ratio show statistically significant difference in only central retinal vein occlusion with rubeosis. CONCLUSIONS: Standard electroretinogram is thought to be a useful method for classifying the central retinal vein occlusion and predicting the rubeosis in central retinal vein occlusion.

The Clinical Analysis of Surgical Methods in Intermittent Exotropia

PURPOSE: The outcome after operations for intermittent exotropia were frequently unsatisfactory because of high incidence of postoperative undercorrection, overcorrection or recurrence. The author studied surgical outcome of each operation method in intermittent exotropia. METHODS: The results of surgical treatment in 90 patients with intermittent exotropia were reviewed. The operative procedure were devided into 3 groups-bilateral rectus muscle recessions, unilateral lateral rectus muscle recession and medial rectus muscle resection and medial rectus muscle resection of dominant eye and lateral rectus muscle recession of non-dominant eye. The success of operation was defined as a final alignment of orthotropia, esotropia less than 5 prism diopter or exotropia less than 10 prism diopter in primary position at postoperative 6 months. RESULTS: The method of of operation in medial rectus muscle resection of dominant eye and lateral rectus muscle recession of non-dominant eye lead to higher success rate than other surgical method (96.7%) and the difference with statistically significant (p=0.03). The success rate of bilateral rectus muscle recessions group was 76.6%, and that of unilateral lateral rectus muscle recession and medial rectus muscle resection group was 80.0%. CONCLUSIONS: This result suggested that medial rectus muscle resection of dominant eye and lateral rectus muscle recession of non-dominant eye might be a most effective surgical method for intermittent exotropia.

A Clinical Study of the Rhegmatogenous Retinal Detachment

PURPOSE: This study aimed to analyze the clinical characteristics, results of operational method and causes of operational failure in rhegmatogenous retinal detachment except macula hole induced retinal detachment, and to analyze several factors of vision. METHOD: We reviewed the records of 720 patients, 743 eyes with regmatogenous retinal detachment who had undergone operation from January 1990 to December 1999, and followed up for at least 3 months or longer. RESULT: Scleral buckling (728 eyes, 98.0%), gas injection (9 eyes, 1.2%) and vitrctomy (6 eyes, 0.8%) were done as a primary operation. Anatomical success rate was 684 eyes(34.9%). A good visual acuity ( V A >or=0.5) was achieved in 239 eyes (34.9%), reasonable vision (VA 0.4~0.15) in 192 eyes(28.1%), ambulatory vision (VA 0.1~0.02) in 95 eyes (13.8%), whereas 158 eyes (23.2%) became blind (VA

mechanism of Cell Death induced by ZnCl2 and Calmodulin Antagonist in Human Retinoblastoma Cells

No Abstract Available.