While the exact standardization of all the steps used in accurate field taking is probably impossible at present, in my opinion, certain steps in the process of taking and recording fields can be rendered sufficiently uniform to enable one more correctly to interpret and more accurately to reproduce published fields than is now possible. Even a superficial review of the literature quickly reveals the importance of an effort in this direction. In the first place, a great variety of test objects are used with little thought of adapting the size of the object to the visual acuity ; often little attention is given to the lighting conditions, and the results are recorded incompletely on charts of great variety and of different sizes. In order to make possible the correct interpretation of published fields it is of the greatest importance that the following facts be given in recording fields : the visual acuity,
THOMASSON AH. A PLEA FOR GREATER UNIFORMITY IN METHODS OF FIELD TAKING. Arch Ophthalmol. 1934;12(1):21–32. doi:10.1001/archopht.1934.00830140029002
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