laxed a little or increased a little, without changing any given degree of convergence; this independent portion is known as the relative accommodation. 13. Balance of External Eye Muscles. — The purpose of the various tests for the determination of ocular muscle balance is to destroy the desire to… … away. The rod is thei^wung into a vertical position before the eye with best-vision ; and if the horizontal streak of light which is^^ected upon the retina by means of the cylindricaj ^wion of the rod passes through the unal¬ tered flarae^^ by the other eye, there is said to be ver¬ tical mus^Je…
Eye—Diseases · Color blindness · Eye Diseases · Color Vision Defects
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