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REFRACTIVE ERROR CHANGE IN APPROACH Overview of Refractive Error Prevalence and Delivery Models
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Kocur, 2008
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Refractive Error Working Group: Significant Refractive Error < 6/12 in children in the better eye < 6/18 in adults in the better eye. Myopia >= 0.50 Ds. Astigmatism >= 1.50 Dcyl Hyperopia >= 2.0 Ds ( >=1.0 Ds in > 40 yrs) Anisometropia >= 2.0 Ds (children)
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Country Hyperopia >2.0 (%) Myopia > 0.50 (%) Astig. >0.75 (%) S Africa - Urban1.82.99.2 India - Rural0.84.12.8 India - Urban7.77.45.4 China - Rural3.516.215.0 China - Urban5.835.133.6 Chile - Urban16.36.819.0 Malaysia - Urban1.319.315.7 Nepal - Rural1.41.22.2 Refractive Errors in Children(RESC)
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Burden of URE Resnikoff S, et al. (2008). "Global magnitude of visual impairment caused by uncorrected refractive errors in 2004.." Bull World Health Organ 86(1): 8.
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Burden of URE - Regions *millions Resnikoff S, et al., 2008
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Global Estimates Reference: Global estimates of visual impairment: 2010; Pascolini and Mariotti. BJO 2012, 96: 614 -618 December 2011
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Major cause of VI - Uncorrected refractive errors 43% Global Estimates 2010 … Pascolini, D. and S. P. Mariotti "Global estimates of visual impairment: 2010." Br J Ophthalmol. 43 % (123 million)
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1.04 billion people globally 517 million of whom had no spectacles or inadequate spectacles. 410 million prevented from performing near tasks in the way required. 94% from less and least-developed countries Presbyopia - Estimates Holden, B et al., (2008) Global Vision Impairment Due to Uncorrected Presbyopia. Arch Ophthalmol. 26(12):1731-1739
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25.8-39.8 17.4-43.3 26.8-39.1 14.6-66.3 15.4-47.8 7.6-49.6 29.0-35.3 Mingguang et al, 2012
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0.07-98.7 4.62-63.3 2.38-92.31.34-93.6 0.32-95.4 1.1-87.7 0.84-39.3 Mingguang et al, 2012
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0.1-98.4 4.67-50.8 2.3-89.1 0.44-86.9 0.67-93.8 0.72-91.4 0.84-69.2 Mingguang et al, 2012
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Global Visual Impairment (<6/18) 123 Mil Dist 517 Mil Near 640 million
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The vicious cycle of uncorrected refractive error Visual Impairment Limits Educational Oppotunities Unemployment PovertyQuality of Life
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International Centre for Eyecare Education (ICEE) 269 billion dollars lost productivity Smith et al, 2009 >50 yrs No Producitivity 121.4 billion dollars
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How many Optometrists are there? Global Estimate (D. Wilson et al., BHVI 2010) 281 748 Varies tremendously from country to country −from 0.1 per million population −to 600 per million population 281 748
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Number of Optometrists per Million population 0.9 194 14
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Number of Optometrists and Ophthalmologists per Million population
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RE Programs: Core Activities Sustainable, Accessible, Affordable SCALABLE
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Community Regional National Global WHO, IAPB, NGOs Regional IAPB offices MOH, NGOs, Professional bodies Local government bodies, Community clinic setting, Community bodies, Advocacy
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Human Resource Development Who is the refractive services workforce? Individuals with clearly defined: −Roles and responsibilities −Job descriptions −Career structure All cadres, should possess: −Competencies and skills −Complementary functions with other cadres −TEAM APPROACH
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Who is the refractive services workforce Optometrists Ophthalmologists Mid-level personnel Primary level personnel Optical dispensers Spectacle technicians Optical Dispensary Staff
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The strategy for eye care delivery determines where the work force operates Community Level Vision Centre Training Centre Specialists Service Centre Mid-level personnel Vision 2020 WHO, IAPB, NGOs Specialists – Ophthalmologists, Optometrists, Disp & Manuf technicians Optometrists, Ophthalmics Nurses Ophthalmic technicians Vision technicians Community Worker, Teachers, Primary health care worker Case finding Screening Refraction Dispensing Refraction Diagnosis & Management
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Challenges to HRD Personnel retention Multi-tasking Sustainability Career path Remote communities Maintaining standards Changing scope of practice
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Providing refractive correction Providing the refractive correction depends on local conditions and resources Accessibility −Providing a supply chain Quality −Equipment sourced and incorporated into service delivery programmes −Ready made spectacles Lower cost Rapid treatment −Adaptive Spectacles
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An optical supply chain with social and economic benefit GLOBAL RESOURCE CENTRE GLOBAL RESOURCE CENTRE SUPPLIER PATIENTS VISION CENTRES VISION CENTRES NGOs & PUBLIC HEALTH SECTOR Cost Recovery / Minimum Markup = Affordable to Pts Purchase in bulk (no middle man) = reduced product cost Purchase in bulk (no middle man) = reduced product cost Minimum Price Mark Up Minimum Price Mark Up
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Service Delivery Refractive Service/Vision Centres/Refraction Clinics Partnerships with governments NGO led Entrepreneurship
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NON- SPECIALIST HEALTH DISTRICT 3 o LEVEL CARE SPECIALISED SERVICES SPECIALIST & SUPER- SPECIALIST CARE (4 0 ) Fig 1. CLINIC DISTRICT HOSPITAL COMMUNITY HEALTH CENTRE PROVINCIAL HOSPITAL REGIONAL HOSPITAL District Health System COMMUNITY HEALTH CENTRE DISTRICT HOSPITAL REGIONAL HOSPITAL
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Primary Eye Care Integration of primary eye care into primary health care Strong primary health care development = strong eye care programmes Different personnel in different contexts Roles and tasks need to be clarified
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Service Delivery in KZN 3 3 2 4 2 2 1 2 3 3 8 33 optometrists 11 Districts 123 clinics 1000 000 patients
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Social Entrepreneurship and Public Private Partnership Addressing Poverty and Eye Health through entrepreneurship and within a health systems perspective Have to balance public protection with profitability and a purely financial model cannot be adopted
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Infrastructure & Service Development Vision Centres LVPEI model An eye care facility that provides a range of eye care services, including: Eye examinations Refraction (i.e. determining the spectacle prescription required) Supply and dispensing of affordable spectacles Detection of potentially blinding diseases Treatment of minor eye diseases
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Tanzania Vision Centers
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Enterprise for Sight Program in South Africa
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Partnerships with private practitioners D Get private optometrists involved for our mission Package of 20 to 30 affordable frames and ready-made spectacles Supported by Optometry Associations CPD for participating optometrists Target customers: Low income consumers (working poor)
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Vision screening in China Screening in Lechang, China, 2010 SCHOOL HEALTH AND SCHOOL EYE HEALTH
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Strategic partnerships to support sustainability Governments Major Development Agencies Rural agencies Women's Groups Professional Associations Business Development Units Micro-finance Groups
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THANK YOU k.naidoo@brienholdenvision.org
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