000			01838cam a2200289 4500
020			_a9241561084
035			_a(Sirsi) a41240
060			_aWW 354
242	1	0	_aProvisión de gafas de bajo costo
242	1	0	_aL' Approvisionnement en lunettes bon marché
245	0	4	_aThe Provision of spectacles at low cost.
260			_aGeneva : _bWorld Health Organization, _c1987.
300			_a32 p.
500			_apor published by: Lisbon : Ministério da Saúde, Departamento de Estudos e Planeamento da Saúde.
520	3		_aPresents arguments, ideas, and technical advice that can help developing countries find ways to provide spectacles at low cost. The book draws many of its arguments from recent experiences demonstrating that local production of spectacles is feasible, requires a relatively small investment, depends upon a minimum of imported materials, and can help stimulate technical development. Readers are introduced to the prevalence of different eye defects in different age groups, the advantages of early detection and correction, and the principal target groups that would benefit most from low-cost spectacles. Simple inexpensive technologies are then described for frame manufacture, lens production, assembly and edging. While items that must be imported are clearly identified, emphasis is placed on ways of keeping costs to a minimum and of conserving foreign exchange.
546			_aeng fre por spa.
546			_anep.
550			_aWHODOC
561			_aWHO monograph
596			_a4
650	0	2	_aEyeglasses _xsupply and distribution.
690			_aCommunity Health and Primary Health Care.
711	0		_aWorking Group on the Provision of Low-Cost Spectacles _d(1985 : _cGeneva)
856			_uhttps://apps.who.int/iris/
008			871207s1987 eng
942			_2NLM _cMONOGRAPH
999			_c12291 _d12291