• Journal of Korean Ophthalmic Optics Society
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• v.18 no.2
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• pp.143-148
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• 2013

Purpose: The aim of this study was to investigate the distribution of age and gender, types of intraocular lens (IOL), and refractive errors in subjects who had cataract surgery. Methods: 2,217 subjects who had cataract surgery were surveyed at an optometry clinic in Chungbuk from 2010 to 2012. Information about IOL was obtained from case history, reflective and retroillumination images IOL by auto refracto-keratometer. Refractive errors were determined by objective and subjective refraction. Results: The mean age of the subjects was $71.74{\pm}10.62$ years. The number of cataract surgeries increased from 524 persons in 2010 to 888 persons in 2012. Of the subjects surveyed, 52 persons (2.3%) were under the 40 years of age, 144 persons (6.5%) were in 50s, 404 persons (18.2%) were in 60s, 1,132 persons (51.1%) were in 70s, 485 persons (21.9%) were in above 80s. Cataract surgery was significantly prevalent in more female (1,338 persons, 60.4%) than in male (879 persons, 39.6%). Types of IOL were 2,141 persons (96.6%) for monofocal lens, special IOLs such as multifocal, accommodative and toric lens were 76 persons (3.4%). The distribution of refractive errors after cataract operation were 1,588 eyes (38.5%) for simple myopic astigmatism, 327 eyes (7.9%) for simple hyperopic astigmatism, 601 eyes (14.6%) for mixed astigmatism, 1,240 eyes (30.0%) for myopia, 136 eyes (3.3%) for hyperopia, and 234 eyes (5.7%) for emmetropia. The uncorrected and best corrected visual acuity of the subjects were $0.55{\pm}0.25$ and $0.80{\pm}0.23$, respectively. Conclusions: The prevalence of cataract surgery increased with age until 70s years of age, it was more prevalent in men than women over 60s, and frequency of special types of IOL were low. Most cataract surgeries left residual refractive errors. Therefore even after cataract surgery it may need spectacles for better vision at either distance or near.

• International Journal of Fuzzy Logic and Intelligent Systems
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• v.16 no.1
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• pp.21-26
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• 2016

Canine cataract is developed with aging and can cause the blindness or surgical treatment if not treated timely. The first observation must be made by pet owners but they do not have proper equipment and knowledge to see the abnormalities. In this paper, we propose an intelligent image processing method to extract canine cataract suspicious object from non-professional equipment such as ordinary digital camera and cellular phone photographs so that even casual owners of pet dog can make a pre-diagnosis of such a surgery-needed disease as soon as possible. The experiment shows that the proposed method is successful in most cases except the dog has similar colored hair to the color of cataract.

• 대한예방의학회:학술대회논문집
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• 2001.10a
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• pp.195-196
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• 2001

• Biomedical Science Letters
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• v.8 no.3
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• pp.127-135
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• 2002

Anterior subcapsular cataract was developed by opacification with transdifferentiation and abnormal proliferation of lens epithelial cells (LECs) and pathological accumulation of extracellular matrix (ECM). After-cataract also be caused by a similar transdifferentiation of LECs remaining after surgery and the accompanying increase of ECM deposits. It is blown that prostaglandin E2 and cytokine, such as TGF-$\beta$, bFGF, and IL-1, were associated with abnormal proliferation and transdifferentiation of LECs. The aim of this study was to detect the expression of transforming growth factor-$\alpha$ (TGF-$\alpha$), transforming growth factor-$\beta_1$(TGF-$\beta_1$) and basic fibroblast growth factor (bFGF) in LECs of senile and diabetic cataract. The expressions of these growth factors in lens epithelial cells were determined. The sample for growth factor determination were collected in senile cataract patients without metabolic disorder, especially diabetes mellitus and diabetic cataract patients. The mRNA expression of growth factors was detected by semi-quantitative reverse transcription - polymerase chain reaction (RT-PCR) followed by Southern blot analysis. Statistics were analysed using Wilcoxon rank sum test. Semi-quantitative RT-PCR/southern analysis of RNA obtained from thirty surgical specimens demonstrated that the level of mRNA expression of TGF-$\alpha$, -$\beta_1$ and bFGF was increased in diabetic cataract lens tissues compared with senile cataract specimens but non-significant, bFGF and TGF-$\beta_1$ mRNA expression were detected in most patients, expression level of TGF-$\beta_1$ was most high on the basis of normal ocular concentration. Detection rate of TGF-$\alpha$ in diabetic cataract was 1.5 fold higher than in senile cataract (P=0.098). TGF-$\alpha$, TGF-$\beta_1$, and bFGF mRNA expression of LECs were detected in senile and diabetic cataract. In both patient groups, expression level of TGF-$\beta_1$, mRNA was high, so We suggest TGF-$\beta_1$ strong influence in development of senile cataract and of diabetic cataract also. TGF-$\alpha$ expression level was similar but more frequently detected in diabetic cataract than in senile cataract. In conclusion, TGF-$\alpha$ may be associated with early development of diabetic cataract.

• Korea Journal of Hospital Management
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• v.25 no.2
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• pp.69-75
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• 2020

Purposes: This study aims to investigate the number of cataract surgeries and predict future trends using 13-year data. Methodology: Trends investigation and comparison of prediction methods was conducted to determine better prediction model using Major Surgery Statistics from Korean Statistical Information Service in 2006-2018. ARIMA(Auto Regressive Integrated Moving Average) was selected and prediction was conducted using R program. Findings: As a results, the number of surgeries will continue to increase. The trends was predicted to increase during January-April, and it declined over time and was the lowest in August. Pratical Implications: Therefore, it is necessary that management will be needed by continuously investigating and predicting the demand and trend for surgery to prepare an alternative to the increase.

• Journal of Yeungnam Medical Science
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• v.11 no.1
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• pp.153-159
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• 1994

Extracapsular cataract extraction with posterior chamber intraocular lens in 24 eyes of 24 diabetics, with and without diabetic retinopathy, were followed up postoperatively for an average of 14 months to determine the incidence of progression of diabetic retinopathy, the final visual acuity and factors predictive of progression of retinopathy and final visual acuity. Overall, retinopathy progressed in 52% of operated-on eyes. Cataract extraction was highly associated with progression of diabetic retinopathy. Women had a significantly increased risk of progression of retinopathy in the operated-on eye compared to men. Visual acuity improved in 22 of 24 orerated-on eyes : however, only 11 eyes achieved a visual acuity of 0.5 or better and only 7 eyes achieved a visual acuity of 0.7 or better. Patients treated with oral hypoglycemic agents had a worse visual prognosis than those treated with insulin. The prognosis of patients with diabetic retinopathy about to undergo cataract surgery, even extracapsular cataract extraction with placement of a posterior chamber lens, is guarded.

• Journal of Korean Ophthalmic Optics Society
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• v.15 no.3
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• pp.275-280
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• 2010

Propose: Due to the rapid growth of medical technologies and the increasing population of older people, we investigated clinical status of ocular dimensions and visual acuity for pre and post cataract surgeries of people over age 90. Methods: From March 2007 to February 2009, we investigated eighty-two eyes of forty-eight patients who had undergone cataract surgeries at an ophthalmic clinic (Ansung, Kyungi-do), investigated maximum corrected vision, axial length, anterior chamber depth and accompanied ocular diseases before and after the surgeries based on the collected data. Results: As patients aged, axial length unchanged but anterior chamber depth decreased over all due to the increase of intraocular lens thickness, and men tended to have a higher degree than women. Seventy-one (86.6%) of eighty-two eyes showed improved corrected vision than before surgeries and forty-three (52.4%) eyes could see more than visual acuity of 0.5. Conclusions: Patients with the systemic disease and accompanied ocular disease showed low vision less than 0.5 after cataract surgery compared to same healthy age peoples. But the others improved correction visual acuity more than 0.5, so the cataract surgery was surely necessary for people over 90 years old and also the presence of ocular disease could have a great influence on correction visual acuity.

• 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.

• Quality Improvement in Health Care
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• v.5 no.1
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• pp.106-118
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• 1998

Background : This study was done to assess the relationship among multiple patient outcomes of cataract surgery perioperatively, 3-4 months and 12 months after surgery. The patient outcomes include changes in visual acuity(operated eye, better eye), visual function(VF-14), patient satisfaction, subjective satisfaction with vision, and subjective overall health status. Methods : For the assessment of relationship, prospective study was performed with 92 patients who had undergone either one or both eye cataract surgery by 3 ophthalmologists practicing at a university hospital. Patients were interviewed. and clinical data were obtained. Doctors were questioned with self-entered questionnaire forms. Medical record was examined to understand surgery process. The survey was conducted at 4 stages : preoperatively, perioperatively, postoperative 3-4 months, and postoperative 12 months. Results : The correlations within patient outcomes at 4 stages - the visual acuity of operated eye and that of better eye, patient satisfaction and VF-14, subjective overall health status and relative health status as against others - were found to be positively correlated. The change in the visual acuity of operated eye and better eye was correlated with VF-14 as well as with patient satisfaction. The change was also correlated with overall health status. However, the correlations between variables were decreased as the postoperative period got longer. Conclusion : As for the postoperative clinical patient outcomes, VF-14 is acted to linker between visual acuity - clinical outcomes and overall health status - endpoint outcomes. Therefore. VF-14 is the index of patient-sided and disease-specific outcome for cataract surgery.

• Advances in Traditional Medicine
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• v.4 no.2
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• pp.82-86
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• 2004

The efficacy of Kohl-Chikni Dawa (KCD), a compound ophthalmic formulation of Unani medicine, to control cataract development was explored in rats fed 25% galactose with the diet for 6 months. When one drop of 3% KCD solution was applied (once and twice daily) in both eyes for 6 months in galactose-fed rats, a significant reduction of lens opacification was noticed. The morphological changes of the lenses were observed every month by slit-lamp biomicroscope. These results suggest that the local application of 3% KCD solution possesses anticataract effect in galactose-fed rats.