Abstract
Eyeglasses, required for functional vision by nearly half the world's population, are still needed by more than a billion people. There are a number of constraints on the provision of eyeglasses: product cost, durability, and appearance; traditional approaches to evaluating refraction; and sustainably scaling potential distribution methods. We offer our experience with an immigrant population in a US urban setting using a “Vision Station.” The station allowed for immediate provision of adjustable glasses using self-refraction, ordering of custom lenses from a low-cost website, and referral to primary and eye care physicians for those with medical eye concerns. As with models in development by other groups, Vision Stations connect people with the life-changing provision of functional vision.
Abstract
Las gafas, requeridas para una visión funcional por casi la mitad de la población mundial, siguen siendo necesarias para más de 1000 millones de personas. Existen numerosas limitaciones para la provisión de gafas: el coste del producto, la durabilidad y el aspecto; los enfoques tradicionales para evaluar la refracción; y la modi-fcación de manera sostenible de la escala de los métodos de distribución potenciales. Ofrecemos nuestra experiencia con una población inmigrante en un emplazamiento urbano de los EE. UU. usando una “Estación de la vista”. La estación permitía sumi-nistrar de manera inmediata gafas ajustables usando autorrefracción, encargar lentes personalizadas desde una página web de bajo coste y referir a médicos de atención primaria y ofalmólogos aquellos paci-entes con problemas médicos ocula-res. Al igual que con modelos en desarrollo de otros grupos, las Estaciones de la vista conectan a personas con la provisión de una visión funcional, algo que puede suponer un cambio en sus vidas.
References
- 1.Fallows J. The 50 greatest breakthroughs since the wheel. The Atlantic. 2013. http://www.theatlantic.com/magazine/archive/2013/11/innovations-list/309536/. Accessed February 11, 2015. [Google Scholar]
- 2.Ludwig A. How Warby Parker doubles down on disruption and social change. Forbes. 2014. http://www.forbes.com/sites/techonomy/2014/06/23/how-warby-parker-doubles-down-on-disruption-and-social-change/. Accessed February 12, 2014. [Google Scholar]
- 3.Eyeglass Stores Ratings. http://www.consumerreports.org/cro/money/shop-ping/eyeglass-stores/eyeglass-stores-ratings/ratings-overview.htm. Accessed February 6, 2015.
- 4.Zhang X, Elliott MN, Saaddine JB, et al. Unmet eye care needs among US 5th-grade students. Am J Prev Med. 2012; 43(1): 55–8. [DOI] [PubMed] [Google Scholar]
- 5.Berry JL, Cuzzo LM, Bababeygy SR, Quiros PA. Unmet need for corrective eyeglasses: results from a Los Angeles County Hospital survey. Int Ophthalmol. 2012; 32(3): 245–50. [DOI] [PubMed] [Google Scholar]
- 6.Holden BA, Fricke TR, Ho SM, et al. Global vision impairment due to uncorrected presbyopia. Arch Ophthalmol. 2008; 126(12): 1731–9. [DOI] [PubMed] [Google Scholar]
- 7.Silver JD, Crosby DN, Mackenzie GE, Plimmer MD. Estimating the global need for refractive correction. http://www.vdwoxford.org/resources/090604_VUK_Poster.pdf. Accessed February 12, 2015.
- 8.Vitale S, Ellwein L, Cotch MF, Ferris FL, Sperduto R. Prevalence of refractive error in the United States, 1999-2004. Arch Ophthalmol. 2008; 126(8): 1111–9. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 9.Vitale S, Cotch MF, Sperduto RD. Prevalence of visual impairment in the United States. JAMA. 2006; 295(18): 2158–63. [DOI] [PubMed] [Google Scholar]
- 10.Remote Area Medical official trailer. http://remoteareamedicalmovie.com/. Accessed February 11, 2015.
- 11.Fricke T, Holden B, Wilson D, et al. Global cost of correcting vision impairment from uncorrected refractive error. Bull World Health Organ. 2012; 90: 728–38. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 12.Pearce MG. Clinical outcomes following the dispensing of ready-made and recycled spectacles: a systematic literature review. Clin Exp Optom. 2014; 97(3): 225–33. [DOI] [PubMed] [Google Scholar]
- 13.Vitale S, Cotch MF, Sperduto R, Ellwein L. Costs of refractive correction of distance vision impairment in the United States, 1999-2002. Ophthalmology. 2006; 113(12): 2163–70. [DOI] [PubMed] [Google Scholar]
- 14.Su Z, Marvin EK, Wang BQ, et al. Identifying barriers to follow-up eye care for children after failed vision screening in a primary care setting. J AAPOS. 2013; 17(4): 385–90. [DOI] [PubMed] [Google Scholar]
- 15.Ma X, Zhou Z, Yi H, et al. Effect of providing free glasses on children's educational outcomes in China: cluster randomized controlled trial. BMJ. 2014; 349:g5740. doi: http://dx.doi.org/ 10.1136/bmj.g5740 [DOI] [PMC free article] [PubMed] [Google Scholar]
- 16.Christ SL, Zheng DD, Swenor BK, et al. Longitudinal relationships among visual acuity, daily functional status, and mortality: the Salisbury Eye Evaluation Study. JAMA Ophthalmol. 2014; 132(12): 1400–6. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 17.Karnani A, Garrette B, Kassalow J, Lee M. Better vision for the poor. Stanford Soc Innov Rev. http://www.ssireview.org/images/articles/2011SP_CaseStudy_CKarnaniGerretteKassalowLee.pdf. Accessed February 12, 2015. [Google Scholar]
- 18.Rotheram-Borus MJ, Swendeman D, Chorpita BF. Disruptive innovations for designing and diffusing evidence-based interventions. Am Psychol. 2012; 67: 463–76. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 19.Keating C. Great medical discoveries: an Oxford story. Oxford: Bodleian Library; 2013. [Google Scholar]
- 20.Silver J. Adjustable liquid-filled eyeglasses. https://www.ted.com/talks/josh_sil-ver_demos_adjustable_liquid_filled_eyeglasses. Accessed February 12, 2015.
- 21.Centre for Vision in the Developing World. http://www.vdwoxford.org/home/. Accessed February 12, 2015.
- 22.Two-element variable-power spherical lens. http://www.google.com/patents/US3305294. Accessed February 12, 2015.
- 23.Zhang M, Zhang R, He M, et al. Self correction of refractive error among young people in rural China: results of cross sectional investigation. BMJ. 2011; 343:d4767 10.1136/bmj.d4767. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 24.Gudlavalleti VSM, Allagh KP, Gudlavalleti AS. Self-adjustable glasses in the developing world. Clin Ophthalmol. 2014; 8: 405–13. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 25.Rewri P, Kakkar M, Raghav D. Self-vision testing and intervention seeking behavior among school children: a pilot study. Ophthalmic Epidemiol. 2013; 20(5): 315–20. [DOI] [PubMed] [Google Scholar]
- 26.Adlens. Emergensee. https://www.adlens.com/product/emergensee/. Accessed February 6, 2015.
- 27.Child Vision TM. How do you use self-adjustable glasses? http://www.vdwoxford.org/childvision/#oursolution_glasses. Accessed February 6, 2015.
- 28.Ramasamy D, Joseph S, Valaguru V, Mitta VP, Ravilla TD, Cotch MF. Cluster randomized trial to compare spectacle delivery systems at outreach eye camps in South India. Ophthalmic Epidemiol. 2013; 20(5): 308–14. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 29.Treacy MP, Treacy MG, Dimitrov BD, Seager FE, Stamp MA, Murphy CC. A method for the prescription of inexpensive spectacles by non-specialist healthcare workers: S-Glasses. Eye (Lond). 2013; 27(4): 474–9. [DOI] [PMC free article] [PubMed] [Google Scholar]
- 30.Zhou Z, Kecman M, Chen T, et al. Spectacle design preferences among Chinese primary and secondary students and their parents: a qualitative and quantitative study. 2014;9(3):1–8. [DOI] [PMC free article] [PubMed] [Google Scholar]