Document 5krDvwX0Jbw1w7ZXvKGVbRBRz

Industrial Hygiene Digest - 14 January, 1950 41 Common Problems In Industrial Ophthalmology. C.W. Lepard. Med, del Departe y del Trabajo l4, 2BB1-2W7 (Oct. 1949). (English Section) Removal of foreign bodies from the eye Is a major problem In industrial ophthalmology. The steps in removal of a foreign body from the cornea are: (1) obtaining an accurate history; (2) anesthesia of the conjunctiva and cornea; (3) finding the foreign body; end (4) removing It. Each stage In* volves complications that are discussed. Effects of ultraviolet and Infrared radiation, visual requirements for various Jobs, Including color perception, and safety glasses are considered briefly. 42 Excretion of Silver In a Patient vlth Argyrosis. Ineffectiveness of Treat ment vith BAL. F.S. Oerbasl and A.R. Robinson. Am. J. Clin. Path. 19 , 668-675 (1949). In a case of chronic argyrosis, during treatment vlth BAL (2,3 dimercaptopropanol), silver In urine and feces vas determined by the Lundegardh flame or the copper-spark technique. Although small amounts of silver vere ex creted In the urine, there vas no change In excretion before and after admini stration of BAL, nor in the concentration of silver In the skin. -- Chem. Absts. 43 Vital Capacity Measurements In CornlBh Tin Miners. Jessie Garrad. Brit. J.Ind. Med. 6, 221-229 (Oct.~1949). Cornish tin-miners,in Geevor and South Crofty Mines, vere examined clinically and radiologicolly In order to determine the association between vital capacity and radiological lung changes, and, to assess the vital capacity measurement as an index of a man's pulmonary condition during a survey lasting several years. The initial survey In 1946 shoved that at both mines the mean vital capacity of men vith abnormal x-rays (Groups II, III, and IV) vas smaller than that of the normal (Group I) and at Geevor this difference vas significant. The decrease in the observed vital capacity of abnormal men both In this Burvey and the followup survey in 1947 vas shown to be a function of age. In the 1947 Geevor survey the vital capacity vas related to the radiological chest volume, which vas found to be unaffected Iby age or radiological lung changes. When the "expected" vital capacity vas calculated from the radiological chest volume, similar and overlapping values vere obtained far each of the four x-ray groups. Therefore, a comparison of the observed and "expected" vital capacities is of no diag nostic value. . The limits vithIn which a man'B "expected" vital capacity vould fall are so vide.as to Include the whole possible range of his observed volume. Therefore, this comparison cannot be used to trace a man's annual progress. If the standard deviation of the "expected" vital capacity Is Ignored In such a comparison, anomalous and misleading figures may result. The literature is briefly outlined. -- Condensed from Author's Summary 44 A Tropical Occupational Disease due to Perris, vlth Investigations of the Effect of Derr is an Goldfish. R.D.O.P. Simons. Act. Derm, vehereol. Stockh. 20, p. 601 (1948) Swedish. The bark of the derris root contains rotenane, degue.line, tephroslne, and toxlcarol. In experiments vlth goldfish, derris powder vas found to