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Arch Ophthalmol. 2001;119:717.

	Since this article does not have an abstract, we have provided the first 105 words of the full text and any section headings.

Dr George E. Deschweinitz of Philadelphia, read (by invitation) a paper on ocular headaches. Eye strain due to refractive error, heterophoria and accommodative dysfunction, is responsible, in whole or in part, for about 60 per cent of functional headaches; small error of refraction are often more potent in this respect than the larger ones; all types of refractive error and muscle imbalance are capable of causing headache, simple and compound astigmatism and hyperphoria being the most potent refractive defects in this list.

Reference: Webster D. Report of the Proceedings of the Section on Ophthalmology of the New York Academy of Medicine. Arch Ophthalmol. 1925;54:489-490.