. A treatise on diseases of the eye . PLATE IX. Pupillary Light Reflex Arc; Sympathetic, Cortical, andSensory Dilator Tracts. Red and Cr^^w.—Centripetal tract of the light reflex arc. (Crossing at the sphincter centresnot shown.) Yellow.—Centrifugal tract of the light reflex arc. Blue.—Sympathetic tract containing the nerve fibers which innervate the dilator pupillze. Black.—Cortical and sensory tracts. (Uhthoff.) IRIS 121 shaded—the indirect or consensual light reflex. Both reactions are (hieto the integrity of what is termed the light reflex arc, whieli consists offibers runnins; from the ey
. A treatise on diseases of the eye . PLATE IX. Pupillary Light Reflex Arc; Sympathetic, Cortical, andSensory Dilator Tracts. Red and Cr^^w.—Centripetal tract of the light reflex arc. (Crossing at the sphincter centresnot shown.) Yellow.—Centrifugal tract of the light reflex arc. Blue.—Sympathetic tract containing the nerve fibers which innervate the dilator pupillze. Black.—Cortical and sensory tracts. (Uhthoff.) IRIS 121 shaded—the indirect or consensual light reflex. Both reactions are (hieto the integrity of what is termed the light reflex arc, whieli consists offibers runnins; from the eye to tlie brain, ccntripcfal fibers, and fibersrunning from the brain (nucleus of the tiiird nerve) to the iris, cenlrifnijalfibers. Centripetal Fibers.—The centripetal fibers have their origin in theretina, being apparently most plentiful in the region of the posteriorpole, having the same distribution as the fibers concerned in vision, thatis, those that decussate come from the nasal half of each retina, the non-decussating from
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecteyediseases, bookyear
