The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . als the size of the intended pupillary is laid in position and fixed by small retaining hooks. It is thenfilled with the pigment massing, which is brought into direct contactwith the area which is intended to be pigmented. The tattooing isperformed in the included space. The greatest disadvantage thatthe contrivance possesses is that the field of operation cannot bemade visible without removing the instrument. He has devised asecond guide for the corneal size.—
The American encyclopedia and dictionary of ophthalmology Edited by Casey A Wood, assisted by a large staff of collaborators . als the size of the intended pupillary is laid in position and fixed by small retaining hooks. It is thenfilled with the pigment massing, which is brought into direct contactwith the area which is intended to be pigmented. The tattooing isperformed in the included space. The greatest disadvantage thatthe contrivance possesses is that the field of operation cannot bemade visible without removing the instrument. He has devised asecond guide for the corneal size.—(C. A. 0.) 594 ARMAIGNACS TEST Armaignacs test. This device, like so many instruments for thedetection of simulated monocular blindness, is a modification of themirror arrangement in Fles (q. v.) box. The malingerer, unlesshe closes one eye and makes a direct observation, is pretty certainto believe that he is seeing with his admittedly sound eye whenhe really fixes with the alleged amblyopic eye. Armati, Salvino degli. A Florentine of noble family, to whom hasbeen ascribed the invention of spectacles. He died in ^^Ql I J)\\(:f i^AL:,/I^() [ \\\- \\ i • , ni I \/i- IN/! \I(1H Dl.(riJ (H i Modern Bust and Inscription, Copy uf Media-val Tomb of Salvino dArmati. For the sake of completeness, it ought to be added that spectaclesand eyeglasses were wholly unknown to the ancients. All that theweak of sight, whether from age or from any other cause, could do, ARMATURE 595 in antiquity, to improve their sorry lot, was (1) to look at letters, oneeye at a time, through a little role or tube, innocent of lenses, thusby means of isolation securing a certain amount of distinctness; and(2) to strengthen and clarify the eyes with local collyriaor purifications of the body generally. Neros emerald, so oftenreferred to in this connection, was not a lens of any sort, but a con-cave mirror. Spectacles were really invented by someone, nobodynow knows whom, near the middle of the thi
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