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Prevention of blindness is the most important aim of ophthalmology. Prevention of blindness is related to many factors. It is related to many factors, such as science and technology, economy and social behavior. There are worldwide activities by WHO, NGOs and other functions to promote the prevention of blindness in the world. More than 90% of blind population lives in developing world. Cataract is the top causes of blindness which is curable. Onchocerciasis is an endemic disease in west Africa and central America. Onchocerca Control Project (OCP) was formed in 1974 under WHO for the control of oncocerciasis by the funds of developed countries. The control of vector (simulium) as well as new drug are giving the the project the prospect of success in eradicating the disease, thus preventing the blindness by diseases. The situation on blindness by trachoma, childhood blindness, glaucoma, diabetes will be discussed. The progress of molecular genetics of eye disease may open the gate for prevention of blindness by these disease in future.
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PMID:The prevention of blindness--past, present and future. 128 79

Prevention of blindness is the most important aim of ophthalmology. Prevention of blindness is related to many factors. It is related to many factors, such as science and technology, economy and social behavior. There are worldwide activities by WHO, NGOs and other functions to promote the prevention of blindness in the world. More than 90% of blind population lives in developing world. Cataract is the top causes of blindness which is curable. Onchocerciasis is an endemic disease in west Africa and central America. Onchocerca Control Project (OCP) was formed in 1974 under WHO for the control of onchocerciasis by the funds of developed countries. The control of vector (simulium) as well as new drug are giving the the project the prospect of success in eradicating the disease, thus preventing the blindness by diseases. The situation on blindness by trachoma, childhood blindness, glaucoma, diabetes will be discussed. The progress of molecular genetics of eye disease may open the gate for prevention of blindness by these disease in future.
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PMID:[The prevention of blindness--past, present and future]. 129 98

Primary open angle glaucoma is the second most important cause of permanent blindness in the Asia-Pacific region. Thus it is very important to identify epidemiological and other risk factors which are associated with open angle glaucoma. The risk for glaucoma optic nerve damage increases with the age and with the level of the intraocular pressure. In this paper, I will highlight our study of several risk factors for development of the open angle glaucoma like (1) elevated intraocular pressure, (2) myopia, (3) suspicious large optic disc cup, (4) cupping with disc haemorrhages and (5) nerve fibre defect. The general and systemic conditions which are implicated as risk factors are (1) family history of glaucoma. (2) increase in age, (3) diabetes mellitus, (4) cardiovascular conditions like central retinal vein occlusion etc. (5) the endocrine disorders with increased thyroid and increased corticosteroids responsiveness in patients with glaucoma will be discussed.
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PMID:[Epidemiology of glaucoma in Asia-Pacific]. 129 99

Senile cataract is the major cause of curable blindness in Tunisia (51%). Other factors than advanced age seem to play a role in senile cataract. The simultaneous of senile cataract with the trachoma makes the surgical operation problematic. In order to evaluate the frequency of such risk factors, we have realized a prospective study in two groups of patients recruited in 4 hospitals centers in Tunisia. The two groups of patients were homogenous regarding to age (more than 45 old year) sex and geographic origins. Cataract was present in the first group (287), but not in the second group (169) risk factors which were evidenced are: diabetes or abnormal glucose test tolerance, high systemic blood pressure, especially diastolic, low education and non professional occupation, family history of cataract. Evolutive trachoma was found in 5.1% of cases compared to only 0.6% in controls (p = 0.02). Trachoma sequela were found in the two groups. The importance of an evaluation of such risk factors in senile cataract is raised.
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PMID:[Senile cataract and trachoma in Tunisia]. 134 67

Cataract is responsible for 50% of world blindness, with at present an estimated backlog of 13.5 million cases in need of surgery. Low-cost cataract surgery must be made more available in developing countries, making use of alternative approaches for outpatient surgery and optimal management of available resources. Trachoma control needs to be targeted at the worst affected areas in endemic countries, with more emphasis on behavioural, educational and community aspects of the disease. Vitamin A deficiency and xerophthalmia control are becoming matters of maternal and child health care, with early intervention during infancy in view of the mortality issue. There are good prospects for the prevention of blindness from onchocerciasis, through the availability of ivermectin, but large-scale distribution schemes are still needed in most of the African countries concerned. The early detection and management of open-angle glaucoma still poses a major problem in developing countries, and further development of appropriate technology is needed in this field. Another area where more efforts are needed is ocular trauma, which is commonly the cause of unilateral loss of vision. General preventive measures must be enforced and better training provided to health personnel to deal competently with such cases, in order to prevent late complications. Diabetes, finally, is on the increase in many developing countries, giving rise to problems in dealing effectively with the ensuing retinopathy.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:Present challenges in the global prevention of blindness. 138 40

The CHAT classification separates various current and historical presentations of cerebrovascular disease in an effort to determine important prognostic clues for management and prognosis. To evaluate known risk factors for late stroke and death, we followed up for an average of 44 months 633 patients who had undergone 714 carotid operations. We analyzed the indication for surgery (by CHAT) and the effect of preoperative risk factors (age, hypertension, cardiac disease, tobacco use, diabetes, hyperlipidemia, renal disease, pulmonary disease, and total risk factor score) on the end points of late stroke and death. Ipsilateral stroke was uncommon after carotid endarterectomy: with life-table analysis, the probability of late stroke at 5 years after carotid endarterectomy was 3%. Among the 127 patients with amaurosis fugax, the incidence of late stroke and of mortality was a combined total of 1% per year, and the 17 patients who had been first seen with permanent ocular stroke (blindness) fared equally well. The 28 patients who were first seen with vertebrobasilar symptoms and were treated by carotid endarterectomy also fared particularly well, with no late strokes or deaths within the first 5 years. Logistic regression analyses revealed that the various indications for carotid endarterectomy were associated with differing patterns of risk factors as significant predictors of late stroke or death. For patients first seen with asymptomatic lesions, only diabetes was an important predictor for late stroke (p = 0.05) and renal disease was the only marker for early death (p = 0.05). On the other hand, those factors were not significant risk factors for patients first seen with amaurosis fugax, for whom tobacco use was a negative predictor for stroke (p = 0.06) and male gender a negative predictor for early death (p = 0.03). After cortical transient ischemic attacks and carotid endarterectomy, there were no risk factors predictive of late stroke or of death. For patients with prior stroke, age was a very strong predictor of stroke (p = 0.01) and both age and a history of cardiac disease were significant risk factors for early death (p = 0.007). In contrast to the results in reports of patients treated medically for transient ischemic attacks and stroke, we found that several risk factors appeared to play relatively minor roles. In conclusion, stroke after carotid endarterectomy was uncommon, least common after ocular symptoms, and most likely after permanent cortical stroke. Specific risk factors were less important for patients after carotid endarterectomy than for the medically treated stroke patient.
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PMID:CHAT analysis of the influence of specific risk factors on late results after carotid endarterectomy. 140 78

Diabetic retinopathy progresses through three distinct stages. A rational approach to management is based on an understanding of the pathophysiology of each stage. Based on the results of national multicentered clinical trials of laser photocoagulation and other treatments, advances in our understanding of the pathogenesis and treatment can now make a dramatic impact on blindness in the diabetic population: Panretinal laser photocoagulation treatment can reduce the risk of vision loss from high-risk proliferative diabetic retinopathy by at least 50%. Laser photocoagulation treatment of clinically significant diabetic macular edema can reduce the risk of vision loss by more than 50%. Vitrectomy can restore useful vision to some patients with severe diabetic retinopathy and vitreous hemorrhage with or without an accompanying traction retinal detachment. Diabetes 2000 is a new project sponsored by the American Academy of Ophthalmology, the goal of which is to eliminate preventable blindness from diabetes by the year 2000. As its name implies, Diabetes 2000 will be a long-term project aimed at a specific disease--diabetic retinopathy and its complications. It will provide the latest research findings to ophthalmologists and primary care physicians as the first priority, followed by the education of patients and the general public. Recent advances and treatment guidelines for the medical and surgical treatment of diabetic eye disease will be emphasized through the continuing education of ophthalmologists, other physicians, and allied health professionals. In later phases, educational programs for diabetic persons and the public will be developed. Ultimately, improved access of diabetic patients to ophthalmologic care and a close working relationship between ophthalmologists and primary care physicians will ensure early detection of diabetic retinopathy and the timely delivery of state-of-the-art treatments.
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PMID:Current management of diabetic retinopathy. 141 52

One to ten years after laser coagulation for diabetic retinopathy, 229 type I diabetics (mean age 44.3 years) and 157 type II diabetics (mean age 65 years) were re-studied for morbidity and mortality (progression of late damage, duration of survival, cause of death). The duration of diabetes at the first laser coagulation averaged 23.1 years for type I diabetics (15.9 years for type II). Average period from the first laser coagulation to the re-examination was 6.5 years for type I, 5.1 for type II diabetics. Of those patients still alive 6.7% had gone blind (type II: 7.3%). 2.1% and 4.6%, respectively, were receiving dialysis treatment, while renal transplantation had been performed in 3.1 and 1.8%, respectively. Stroke was the most frequent macrovascular complications (8.4 and 16.5%), followed by leg amputation (3.6 and 14.7%) and myocardial infarction (3.7 and 18.3%). 83 patients had died: 35 (15.3%) type I and 48 (30.6%) type II diabetics. Causes of death were septicaemia 14.3% (0%), uraemia 11.4% (8.3%), myocardial infarction 14.3% (33.3%), heart failure 8.6% (29.2%) and stroke 5.7% (6.3%). 10.7% (24.2%) had died within the first 5 years after laser coagulation. Despite a lower incidence of blindness in patients with diabetic retinopathy, the vascular disease progresses in other vascular regions so that a large proportion of diabetics will develop renal failure or die early from macrovascular complications.
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PMID:[Morbidity and mortality in type 1 and type 2 diabetes mellitus after the diagnosis of diabetic retinopathy]. 142 83

Non-insulin-dependent diabetes mellitus is epidemic among African-American women in the United States; reports of its prevalence among African Americans range from 50% to 60% higher than among whites. African Americans also incur higher rates of diabetes-related complications such as blindness, end-stage renal disease, and amputations. Data indicate that non-insulin-dependent diabetes among African Americans is associated with lower socioeconomic status and with obesity. Because obesity has been hypothesized as contributing to the growing numbers of non-insulin-dependent diabetics among African-American women, new strategies are urgently needed to promote weight loss in this population. Community organization can broaden health education and facilitate behavior change toward development of life- and self-mastery skills. Specific strategies of this approach include (1) integrating community values into health messages, (2) facilitating neighborhood "ownership" and decision-making, (3) utilizing existing formal and informal networks, and (4) empowering individuals and community. Community organization may be a promising strategy among low-income minority communities to reduce the risk of non-insulin-dependent diabetes by promoting changes in dietary patterns, because it ensures that the health messages and programs that emerge will be consistent with existing sociocultural norms and beliefs.
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PMID:Community organization to reduce the risk of non-insulin-dependent diabetes among low-income African-American women. 146 55

Both physicians and diabetic persons must be educated about the need for regular ophthalmologic examinations to prevent blindness. A large population-based study of diabetic persons living in Southern Wisconsin (Wisconsin Epidemiologic Study of Diabetic Retinopathy), designed to evaluate the incidence and associated risk factors for diabetic retinopathy, provided the opportunity to evaluate an intervention to increase ophthalmologic care. As part of this study, a sample of persons less than 80 years of age with older onset diabetes of less than 15 years duration was identified and examined in both 1980-1982 and 1984-1986 (n = 619) using standardized protocols. Study subjects received educational material on diabetic eye disease, and examination findings were conveyed to each participant and their primary physician. To evaluate the effect of this intervention, a random representative sample of diabetic persons who were not selected for examination (a nonintervention control group) was identified and interviews were completed with 241 (80%) of the surviving subjects. The two study groups were similar with respect to demographic factors, employment status, medical history, and frequency of physician visits and hospitalizations, but not for income. Self-assessments of general health were also identical between the selected and nonintervention groups. Overall, both groups reported very similar patterns of ophthalmologic care, visual impairment, and knowledge of retinopathy. These results suggest that a more intensive intervention is needed to improve the ophthalmologic care patterns of the diabetic population at risk of eye disease.
J Diabetes Complications
PMID:Education to increase ophthalmologic care in older onset diabetes patients: indications from the Wisconsin Epidemiologic Study of Diabetic Retinopathy. 148 78


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