We measured the horizontal and vertical diameter of the cornea, axial length and lens power in 314 patients who were admitted for cataract extraction. The data was analyzed by Minicomputer (honewel level 6 Model 57, U.S.A.) Cobal language. The results were as follows; 1) The average of the horizontal corneal diameter was 11.47 mm in the males and 11.17 mm in the females, and difference of the horizontal corneal diameter was 0.30 mm between both sexes. The average of the vertical corneal diameter was 10.80 mm in the males and 10.48 mm in the females and the difference of the vertical corneal diameter was 0.32 mm between both sexes. The horizontal and vertical corneal diameter in the males was loger than that of the females in adult. 2) The coeneal diameter was longest in the 41~50 years old group in male and 51~60 yaers old group in femele. The horizontal and vertical corneal diameter showed a tendency to decrease with age in adult. 3) We obtained significant changes statistically in that the cornea diameter showed atendency to increase as axial length increased in adult. 4) The corneal diameter was longest in the 15.01~16.00 Diopter group in lens power and the cornea diameter showed a tendency to decrease as lens power increased.
Adult ; Cataract Extraction ; Cornea ; Female ; Humans ; Male ; Minicomputers ; Statistics as Topic*

PURPOSE: This purpose of this report was to study trends in cataract and refractive surgeries conducted during the past twelve years and to compare results to previous reports from the ASCRS and New Zealand (NZ) in order to forecast future medical services. METHODS: We surveyed members of the Korean Society of Cataract and Refractive Surgery (KSCRS) every year from 1995 to 2006, and studied changes in cataract and refractive surgeries (RS). RESULTS: The duration of hospitalization has been gradually decreasing to the point that a one day hospitalization following surgery has become common. The rate of topical anesthesia use has significantly increased since 1998. Sutureless incision methods are now commonly practiced. The use of acryl IOL as an optic material has been gradually increasing for cataract surgeries. KSCRS members showed an interest in the special intraocular lenses as multifocal IOL. While Excimer laser PRK was the most popular refractive surgery during the first stage, KSCRS members increasingly prefer LASIK to the Excimer laser PRK. Regression of the corrected visual acuity, dry eye, night halo, and flashes were the most common complications following refractive surgeries. Medical disputes related to PRK and LASIK have been gradually increasing throughout the study period. CONCLUSIONS: We confirm that the KSCRS practice styles for cataract and RS are similar to those of the ASCRS and NZ. We infer a world-wide trend from the comparison of these three societies.
Adult ; Cataract Extraction/statistics & numerical data/*trends ; Humans ; Keratomileusis, Laser In Situ/statistics & numerical data/trends ; Laser Therapy/statistics & numerical data/trends ; Lasers, Excimer ; Lenses, Intraocular/statistics & numerical data/trends ; Middle Aged ; Ophthalmology/statistics & numerical data/*trends ; Photorefractive Keratectomy/statistics & numerical data/trends ; Professional Practice/statistics & numerical data/*trends ; Questionnaires ; Refractive Surgical Procedures/statistics & numerical data/*trends ; Republic of Korea ; Societies, Medical

INTRODUCTIONPerioperative glycaemic control is an important aspect of clinical management in diabetic patients undergoing cataract surgery under local anaesthesia. While poor long-term glycaemic control has significant implications for surgery, perioperative hypoglycaemia or hyperglycaemia may also compromise patient safety and surgical outcomes. We aimed to survey ophthalmologists and anaesthesiologists on their approach and to identify the prevalent practice patterns in Singapore.

METHODSThis was a cross-sectional questionnaire-based survey conducted in four public hospitals in Singapore with established ophthalmology and anaesthesia units. Respondents were approached individually, and the self-administered questionnaires comprised questions related to practice patterns, clinical scenarios and awareness of pre-existing guidelines.

RESULTSA total of 129 doctors responded to the questionnaire survey. 76 (58.9%) were from ophthalmology departments and 53 (41.1%) were from anaesthesia departments. The majority chose to withhold oral hypoglycaemic agents (82.9%) and/or insulin (69.8%), and keep the patient fasted preoperatively. A blood glucose level ≥ 17 mmol/L prompted 86.0%-93.8% of respondents to adopt a treat-and-defer strategy, while a level ≥ 23 mmol/L prompted 86.0%-96.9% of respondents to cancel the cataract surgery. The respondents were consistently more concerned about perioperative hyperglycaemia (n = 99, 76.7%) than intraoperative hypoglycaemia (n = 83, 64.3%).

CONCLUSIONThe current study presented the prevalent practice patterns of ophthalmologists and anaesthesiologists in the perioperative management of diabetic patients undergoing cataract surgery in four public hospitals in Singapore. Further research in this field is required, and may be useful for the future formulation of formal guidelines and protocols.

Adult ; Anesthesia, Local ; methods ; Anesthesiologists ; statistics & numerical data ; Blood Glucose ; analysis ; Cataract Extraction ; Cross-Sectional Studies ; Diabetes Mellitus ; blood ; epidemiology ; Female ; Humans ; Incidence ; Male ; Middle Aged ; Ophthalmologists ; statistics & numerical data ; Perioperative Care ; methods ; Singapore ; epidemiology ; Surveys and Questionnaires