Nutritional Night Blindness

Wilbur, Dwight L.; Eusterman, George B.

doi:10.1001/jama.1934.02750050030009

Cited by 19 publications

(2 citation statements)

References 11 publications

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“…20 The patient, a male of 48 years, had persistent diarrhea due to a gastrocolic fistula, but was, however, ambulatory. In spite of an adequate diet, the frequent bowel movements led to vitamin A deficiency and night blindness.…”

Section: Casementioning

confidence: 99%

Night Blindness Due to Vitamin A Deficiency: A Consideration of Its Importance in Traffic Problems

Jeghers¹

1937

N Engl J Med

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operations should have died is evidence of bad obstetrics. Elective cesarean sections were done for specious reasons. Some were done on badly infected cases. It is interesting to note that no craniotomies were found in this whole series.A report such as this is depressing. Good obstetrics is practiced in Boston, but this report brings out the fact that there is also a good deal of bad obstetrics. The results of this study are a direct challenge to those men that have done poor work, and it is their duty to perform, in the future, only work that they are capable of doing. The report is a direct warning to all physicians that improperly selected operations or operations badly performed carry with them a high maternal mortality. It is also a direct challenge to the hospitals that have allowed bad obstetrics to be practiced by members of their staffs.NIGHT blindness, often called hemeralopia, dysaptatio visualis, or erroneously, nyctalopia, is the difficulty, and occasional inability, of adapting the faculty of vision to very faint illumination. While this condition may result from various intraocular diseases, such as glaucoma, detached retina, choroiditis, retinitis pigmentosa and optic neuritis, it may also occur without any ophthalmoscopically demonstrable lesion being present in the eye and is then termed essential or idiopathic hemeralopia.1'2 To establish satisfactorily the presence or absence, of this type of hemeralopiat requires the performance of a test not commonly used at present.In a recent paper on the subject, Frandsen1 summarizes the objective data concerning essential hemeralopia as follows: "These patients show an increased minimum light visible. In reduced illumination the acuity of vision is lowered, the field of vision is narrowed for white as well as for colored objects, so that the field of vision for blue in higher degrees of hemeralopia becomes smaller than' the field for red. Dark scotoma appears at higher clarity than in the ease of normal light sense, the adaptation time is prolonged, the power of distinction is lowered-all signs which signify that the range of adaptation is reduced." These objective manifestations can be quantitatively measured and constitute the means available at present of detecting mild to moderate degrees of night blindness. The practical aspects of these different methods are discussed clsewhere.3 There is, now abundant evidence available to show that in older children and adults essential

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Section: Casementioning

confidence: 99%

Night Blindness Due to Vitamin A Deficiency: A Consideration of Its Importance in Traffic Problems

Jeghers¹

1937

N Engl J Med

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“…Some of the causes ascribed to this condition are : 1 The influence of direct light of the sun during daylight, exposure, and overwork, Nutritional deficiency (vitamin A), Intra-ocular diseases, etc., as retinitis pigmentosa, optic atrophy, glaucoma, choroiditis. (Also included here should be mentioned arteriosclerosis, miosis, syphilis, and toxicosis such as excessive use of tobacco, coffee, and vaso-constricting drugs.)…”

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confidence: 99%