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This classic manual has been enlarged, expanded, and augmented by the addition of a nontechnical explanation of basic optical principles.
As in the first edition, there is a general description of optical aids, accessory devices, and teaching equipment, followed by listing of recommended devices according to type and sources of supply. Prices are not included. Testing procedures at distance and near stress the importance of careful subjective refraction using logarithmically graded letters. Magnifiers are usefully grouped according to the level of reading vision for which each is suited.
The use of M units, as introduced by the senior author, should be understood by ophthalmologists and others concerned with the testing and correction of low vision, including students and practitioners of optometry.
The National Society for the Prevention of Blindness has done the public and the profession a great service by making this new edition available at a modest price.
A. H. Recommended Aids for the Partially Sighted. Arch Ophthalmol. 1972;88(1):121. doi:10.1001/archopht.1972.01000030123032