Transactions . h airwas not thought necessary under the circumstances, or onaccount of the expense for the installation of a fresh-airpump, I am unable to state. Consequently there was noventilation in the interior of the vat, as the only openingsinto it were small pipe-holes in the top, and one about largeenough to permit the workman to crawl through into theinterior. Denatured alcohol is cheaper than methyl alcohol, butthe latter is used because it cuts or dissolves the shellac Tyson: Amblyopia from Inhalation of Methijl Alcohol. 153 quicker, constituting a saving of from five to eight hours
Transactions . h airwas not thought necessary under the circumstances, or onaccount of the expense for the installation of a fresh-airpump, I am unable to state. Consequently there was noventilation in the interior of the vat, as the only openingsinto it were small pipe-holes in the top, and one about largeenough to permit the workman to crawl through into theinterior. Denatured alcohol is cheaper than methyl alcohol, butthe latter is used because it cuts or dissolves the shellac Tyson: Amblyopia from Inhalation of Methijl Alcohol. 153 quicker, constituting a saving of from five to eight hours intime, and, as in this strenuous age the employers apparentlyprefer time savers to life savers, especially as it is difficult toget damages or a conviction under the present laws, theyappear willing to take a chance with the courts. Two additional cases of amblyopia from inhalation ofmethyl alcohol, which have recently come under my ob-servation and have never been reported, are as follows: /////I -Ul^LI Fig. 7.—Fields for white. Case 2.—Miss E. W., aged thirty years, works at polish-ing lead-pencils and uses varnish made from wood a former patient with vision |^ with error of refractioncorrected. The history is negative as to syphiUs, tubercu-losis, or nasal discharges. On April 13, 1912, she consultedme about an attack of headache, with vertigo, weakness,nausea, but no vomiting; also had dizziness and obscura-tion of vision while working, and thought her glasses re-quired changing. = f|+, with -1 cyl. axis90° = H; = ^oir,with cyl. axis*90° = ^. Rela-tive central scotomata for red and green with color fields 154 Tyson: Amblyopia from Inhalation of Methyl Alcohol. for green contracted to 5° and for red to 10° in both eyes;also irregularly contracted fields for white and form, andan enlarged horizontally oval blind spot in the right eye,extending from near fixation to 20 T. and a scotoma on 150°meridian from 10° to 20° parallel. I
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectophthalmology, bookye
