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April 1965


Author Affiliations

2003 Market St Camp Hill, Pa

Arch Ophthalmol. 1965;73(4):607-608. doi:10.1001/archopht.1965.00970030609042

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To the Editor:  With the development of pleoptics came a whole new set of ophthalmic equipment and techniques. One concept which acquired emphasized importance was that of eccentric fixation, and the new equipment provided appropriate means of determining it. Another idea was the blanking of the extrafoveal area by means of an intense light, so that the subject could then fix with the unexposed central macular area. Another piece of equipment performed this task.The purpose of this communication is to describe how both of these functions can be accomplished with only standard ophthalmic equipment, and perhaps at least as well as with the new special equipment.

1. Eccentric Fixation.  —This can be determined quite easily merely with the absolutely ordinary examination by an indirect ophthalmoscope (the patient reclining in the usual fashion). A virtual image of the retina is formed by the condensing or hand lens in the air

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