. A treatise on the diseases of the eye. 34 INTRODUCTION. The oblique or focal illumination is in constant requisition for ascertainingthe condition of the structures of the anterior half of the eyeball. By itsaid we are enabled to examine, with great minuteness, the appearancespresented by the cornea, iris, pupil, lens, and even the most anterior por-tion of the vitreous humor [and to detect foreign bodies [and delicate exuda- [Fig. 2.]. tions.—B.] in the anterior chamber, delicate false membranes in the pupil-lary space, minute deposits upon the iris and capsule of the lens, and slightnebuli
. A treatise on the diseases of the eye. 34 INTRODUCTION. The oblique or focal illumination is in constant requisition for ascertainingthe condition of the structures of the anterior half of the eyeball. By itsaid we are enabled to examine, with great minuteness, the appearancespresented by the cornea, iris, pupil, lens, and even the most anterior por-tion of the vitreous humor [and to detect foreign bodies [and delicate exuda- [Fig. 2.]. tions.—B.] in the anterior chamber, delicate false membranes in the pupil-lary space, minute deposits upon the iris and capsule of the lens, and slightnebulie of the cornea, which would often escape the observation of the un-aided eye.—H.]. This mode of examination is to be thus conducted : Alamp being placed somewhat in front and to one side of the patient, at adistance of from 2 to il feet (Fig. .3), and on a level with his eye, the light Fiii-. ?,.
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