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When the third edition of this well known book appeared several years ago, it was suggested to the author that its value would be greatly enhanced if he had used a little more care in accurately describing the conditions under which each field was taken and in faithfully recording the findings. At least, the size and color of the test object used, the distance of the screen from the eye and the nature and intensity of the illumination should have been recorded for each field. Yet, by actual count, about 125 cuts, mostly of bilateral fields, taken without any of these necessary data, have been transferred from the second edition of this book, published in 1923, to this new edition.
In describing the methods of taking the fields, the author begins with what he calls the hand method. This is a crude modification of the well known confrontation method, which
Thomasson AH. Principles and Practice of Perimetry. Arch Ophthalmol. 1939;21(3):564–565. doi:10.1001/archopht.1939.00860030172024
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