• A visual fixation device that is useful for maintaining subject gaze in one direction during ophthalmologic examinations has been devised. The unit can be constructed from a few inexpensive electronic components.
Brubaker RF. A Do-It-Yourself Fixation Device for the Ophthalmologist's Office. Arch Ophthalmol. 1976;94(8):1400. doi:10.1001/archopht.1976.03910040268020
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