Motor fusion, also known as fusional vergence or fusional reserves, is the maximum amount the eyes can converge or diverge while still maintaining binocular single vision. Positive fusional reserves, measured with base-out prisms, represent the eyes’ maximum convergence ability. Negative fusional reserves, measured with base-in prisms, represent maximum divergence.
Motor fusion, also known as fusional vergence or fusional reserves, is the maximum amount the eyes can converge or diverge while still maintaining binocular single vision. Positive fusional reserves, measured with base-out prisms, represent the eyes’ maximum convergence ability. Negative fusional reserves, measured with base-in prisms, represent maximum divergence.
motor fusion (fusional reserves)
Sources
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