Text-book of ophthalmology . Fig. 10A. Fio. 10B. Fig. IOC. [ A.—Lorings ophthalmoscope; front view. The perforated mirror in this case is cut into a quad-rangular shape, BO thai it pan be rotated slightly ftono side to side (tilting mirror). This is to make thereflection of lighl less oblique in using the direct method. The lower disk contains s series of lenseswhich c;ui be rotated by the pressure of the finger on the serrated edge of the disk, so that any desired in be broughl in front of the sight-hole. Usually there is added s quadranl on the back, contain-ing additional l
Text-book of ophthalmology . Fig. 10A. Fio. 10B. Fig. IOC. [ A.—Lorings ophthalmoscope; front view. The perforated mirror in this case is cut into a quad-rangular shape, BO thai it pan be rotated slightly ftono side to side (tilting mirror). This is to make thereflection of lighl less oblique in using the direct method. The lower disk contains s series of lenseswhich c;ui be rotated by the pressure of the finger on the serrated edge of the disk, so that any desired in be broughl in front of the sight-hole. Usually there is added s quadranl on the back, contain-ing additional lenses, which being BUperimpoaed over those in the revolving disk make a great varietyof combinations B. Marples modification of Dennetts electric ophthalmoscope C. — Mortons ophthalmoscope; rear view, showing the chain of lenses and the mechanism bywhich each one in succession can be brought in front of the sight-hole in the disk at the top which con-tains the mirror D I OBJECTIVE EXAMINATION OF THE EYES. TJ# v; r £1 •5 aSo* ffl T3 g r^2 a 2 a *3 S-3!32 So
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Keywords: ., bookcentury1900, bookdecade1910, booksubjecteye, booksubjectophth
