• Title/Summary/Keyword: cataract

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The etiologic factor of senile cataract and mechanism of occurance of diabetic cataract (노인성 백내장의 원인과 당이 백내장 발생에 미치는 영향에 대한 고찰)

  • Choi, Hae Jung;Chen, Ko Hsien
    • Journal of Korean Ophthalmic Optics Society
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    • v.1 no.2
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    • pp.1-6
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    • 1996
  • The most common cause of blindness is cataract. The possible causes, radiation, sugar, drugs, trauma, nutrition, congenital, secondary to eye disease etc. Generally, the opacification of the lens are the result fa oxidation of the lens fibers. The basis for lens transparency is the structural integrity of lens fibers. Opacities were occur if there is a significant amount of high molecular weight protein aggregates. If Ca ions combined with lens ${\alpha}$-crystallin proteins, the lens fibers were aggregated by high molecular weight proteins and the lens were opacified. If Ca ions detached from lens ${\alpha}$-crystallin proteins, the lens fibers were aggregated by low molecular weight proteins and the lens were re-cleared. We need to find out the variety of factors can initiated the process of age-related cataract. And to understanding the mechanism how the various kind, of diabetic cataracts occur.

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A Study on the Criteria for Selection of Medical Care Facilities by Cataract Patient (백내장 환자의 병원선택기준에 관한 연구 - 서울시내 안과전문병원과 대학병원을 중심으로 -)

  • Kim, Yong-Ran;Ha, Ho-Wook;Sohn, Tae-Yong
    • Korea Journal of Hospital Management
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    • v.5 no.2
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    • pp.59-77
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    • 2000
  • There are increasing interest and need for information on health care consumer with the significance of hospital marketing and strategic planning being increasingly emphasized. This study was conducted to investigate the criteria for selection of medical facilities according to the characteristics of cataract patient. In order to investigate the major factors affecting selection of medical facilities by cataract patient, 300 subjects of cataract patients who was operated at 5 various medical care facilities were selected. Questionnaires are given on March, 2000 and 273 questionnaires were collected. Two types of hospitals(Eye Hospital and University hospital) were combined and analyzed. The main results of this research is as following; 1. In general characteristics of the patients, the variables shown statistically a significant difference between Eye Hospital and University Hospital; The6 educational level and average income are significantly higher in University Hospital Patient. 2. University Hospitals were preferred by the factors of social relationship, social reputation. The critical factors in reference for Eye hospital were kindness, service speed and convenience. This study can be used as a baseline data for marketing planning of hospital management. But the study may be limited in that the results cannot be generalized due to its small sample size and not being able to reflect demographic variables and life style. Further studies to investigate the hospital consumer behavior will be needed.

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Intakes of Antioxidant Nutrients and Carotenoids according to Lens Turbidity Level among Adults Visiting Cataract Clinic (백내장클리닉을 내원한 성인의 렌즈혼탁지수에 따른 항산화 영양소 및 카로티노이드 섭취량 평가)

  • Kim, Ji-Sun;Lee, Seung-Min;Kang, Ja-Heon;Ahn, Hong-Seok
    • Korean Journal of Community Nutrition
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    • v.17 no.2
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    • pp.205-214
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    • 2012
  • This study examined intakes of nutrients, carotenoids and polyphenols according to lens turbidity levels among adults visiting a cataract clinic. A total of 102 males and females aged 40 years or higher agreed to participate in the study, and a face-to-face survey interview was conducted to obtain information on general characteristics, health behaviors, and dietary intakes of each participant. The dietary data were collected by a food frequency questionnaire which was previously validated in a Korean population. In addition to essential nutrients, intakes of a total of 10 carotenoids and polyphenols were calculated based on the tables of food functional composition developed by National Academy of Agricultural Science. The subjects were divided into 3 groups according to turbidity levels (< 16, ${\geq}16$ and < 25, ${\leq}25$), and health behaviors and dietary intakes were compared among the turbidity groups. Data showed seemingly higher energy intake and lower dietary antioxidant (i.e., vitamin A, ${\beta}$-carotene, lutein, zeazanthin, lycopene, cryptozanthin) intakes in the highest turbidity group. However, no statistically significant findings were found in all the comparative analysis on characteristics of health behavior and intakes of nutrients, carotenoids and polyphenols. The current study findings should be cautiously interpreted in consideration of several limitations including a cross-sectional study design, a small sample size, uneven sample size distribution across turbidity groups, and limited generalizability due to using a convenience sample. Therefore we cannot conclude that the risk of cataract is unrelated with dietary antioxidant intakes based solely on the results of this study.

The Effects of the Music Therapy on the Anxiety and Satisfaction of Clients with Cataract Surgery under Local Anesthesia (음악 요법이 백내장 수술환자의 불안과 수술 만족도에 미치는 효과)

  • You, Sun-Young;Jung, Hye-Sun;Koo, Jung-Wan
    • Research in Community and Public Health Nursing
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    • v.14 no.3
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    • pp.407-414
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    • 2003
  • Purpose: The purpose of this study was to discern the effects of music therapy on the patients' level of anxiety and operative satisfaction during cataract surgery under local anesthesia. Method: The subjects for this study were fifty patients. Half of the subjects were categorized as an experimental group and the other half as a control group. All of the subjects were admitted to one hospital in Seoul for cataract surgery. This study was conducted from September 7 to October 2, 2002. The level of anxiety determined by self-reporting anxiety, pulse rate, systolic blood pressure, and diastolic blood pressure, was measured before and after the music therapy. The satisfaction degree was measured after the surgery. The tools for this study were Spilberger's state anxiety inventory and Patient Care Management System. Each patient in the experimental group chose the music used in his/her surgery and it was played through an audio system in the operating room. The data analysis was performed using the SAS/pc+(version 8.0). Results: 1. The anxiety of the experimental group decreased significantly compared to the control group. 2. The pulse rate of the experimental group decreased more than the control group. 3. The blood pressure of the experimental group decreased more than the control group. 4. The operative satisfaction of the experimental group was higher than the control group. Conclusion: According to the previous results, music therapy turned out to be a very efficient way to increase the satisfaction of a cataract patient after surgery by reducing the anxiety and the pulse rate of the patient during an operation with local anesthesia.

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Effect of oral antioxidants on the progression of canine senile cataracts: a retrospective study

  • Park, Sanghyun;Kang, Seonmi;Yoo, Sukjong;Park, Youngwoo;Seo, Kangmoon
    • Journal of Veterinary Science
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    • v.23 no.3
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    • pp.43.1-43.14
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    • 2022
  • Background: Cataracts are the leading cause of impaired vision or blindness in dogs. There are many antioxidants that can prevent cataract progression, but whether they are clinically effective in dogs has not been established. Objectives: To analyze the delaying or preventing effect of oral antioxidants on canine senile cataracts through retrospective analysis. Methods: Medical records of dogs from January 1, 2015 to July 10, 2020 were reviewed. Dogs that were 8 yr of age or older with senile cataracts were included in this study. The dogs were divided into two treatment groups (dogs administered with Ocu-GLO supplement and dogs administered with Meni-One Eye R/C supplement) and a control group (dogs that were not administered any supplement). Dogs with incipient and immature cataracts were included in this study. Altogether, 112 dogs (156 eyes) with incipient cataracts and 60 dogs (77 eyes) with immature cataracts were included. The period of time that cataracts progressed from incipient to immature, and from immature to mature was recorded for each dog. Results: There was no significant delaying effect on the progression of incipient cataracts. However, both Ocu-GLO (hazard ratio = 0.265, p = 0.026) and Meni-One (hazard ratio = 0.246, p = 0.005) significantly delayed the progression of immature cataracts compared to the control group. Conclusions: Although there was no significant delaying effect of oral antioxidants on incipient cataract progression, antioxidants could be used to delay the progression of senile immature cataract.

The Development and Effects of Timeout Protocol for Safety in Cataract Surgery Patients (백내장 수술 환자 안전을 위한 타임아웃 프로토콜 개발 및 효과)

  • Seo, Eun Hee;Choi, Yeon Hee
    • The Korean Journal of Rehabilitation Nursing
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    • v.18 no.1
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    • pp.29-37
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    • 2015
  • Purpose: This study was conducted to develop effective timeout protocol in coordination with current practice and test its clinical effectiveness in pursuit of safety management for patients undergoing cataract surgery. Methods: A total of subjects were 60 women, 50~65 years old, who visit C ophthalmology clinic in D city. They were assigned to 30 experimental group and 30 control group, respectively. Based on the comprehensive literature review, timeout protocol that was suitable for patients undergoing cataract surgery was developed, and then test its effectiveness by measuring blood pressure, pulse, anxiety and sense of well-being among surgical patients. Results: The timeout protocol was found to reduce blood pressure, pulse, and anxiety and increase well-being among surgical patients. Conclusion: As a results, it is necessary to introduce an effective timeout protocol giving positive responses to surgical patients, hence it should be develop a timeout protocol and explore the effectiveness of the protocol.

The Use of Lens Shielding Device(L.S.D.) for a Conjunctival Lymphoma

  • Cho Hyun Sang;Ju Sang Gyu;Song Ki Won;Park Young Hwan
    • The Journal of Korean Society for Radiation Therapy
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    • v.9 no.1
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    • pp.40-45
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    • 1997
  • When therapeutic irradiation is indicated for the orbital tumors, the greatest concern is the risk of radiation-induced cataract. Conjunctival lymphoma is one of the good examples. We would like to report the procedure of the lens shielding device(L.S.D) and the result of irradiated dose to the lens. L.S.D. consistes of two parts : load alloy to attenuate electron beam, and dental acryl which completely covers the lead alloy to avoid discomfort of cornea from contacting directly with cerrobend and side scattering by cerrobend. And for easy location and removal, side bars were made on each side. Radiation doses were meaured with TLD(TLD 3500 Hawshaw). Markus chamber in a polystyrene phantom. The phantom was irradiated with 9MeV electron beams from Clinac 2100C with $6{\times}6cm$ electron cone. The relative dose at 6mm depth where the lens is located was $4.2\%$ with TLD and $5.1\%$ with Markus chamber clinically when 2600 cGy are irradiated to the eyeball, the mapinary dose to the lens will be 109 cGy or 132 cGy, which will significently reduce the cataract.

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Effect of Flavonoids from Scutellariae Radix on Cataract Formation and Polyol Accumulation in Rat Lens (황금의 Flavonoid 성분들이 Rat 수정체의 백내장 형성과 Polyol 축적에 미치는 효과)

  • Shin, Kuk-Hyun;Chae, Yun-Jung;Chung, Myung-Sook;Lee, Hee-Ju
    • Korean Journal of Pharmacognosy
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    • v.25 no.1
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    • pp.41-46
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    • 1994
  • The ether, ethylacetate and n-butanol soluble fractions from the roots of Scutellaria baicalensis showed a significant inhibition of lens aldose reductase (AR) activity in vitro. During systematic fractionation of the active fractions, 7 flavonoids were isolated and compared their inhibitory activities against rat AR using DL-glyceraldehyde as a substrate, among which baicalin (VII) was found to exhibit the most potent inhibitory activity. Baicalin (VII) and wogonin-7-O-glucuronide (VI), with repeated treatments (30 mg/kg/day, i.p.) throughout the experimental periods caused a significant suppression of cataract formation induced by galactose (40 g/kg/day) as well as the decrease of galactitol accumulation in the rat lens. The flavonoids also exhibited a significant inhibition of sorbitol accumulation in the lenses of diabetic rats induced by streptozotocin (STZ).

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