Word: ophthalmograph
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Dates: during 1930-1939
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First step in Dr. Center's clinic is to measure hops, fixations and regressions with an ophthalmograph. which takes motion pictures of a reader's eye movements. The resulting picture looks like sets of stairs, recording the eye's stops and jerks. If the reader is efficient, the stairs are regular...
Some discoveries through the ophthalmograph...
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