Since the publication of Berlin’s original paper few cases of _commotio retinæ_ have been recorded. Indeed, the retinal changes are of so fleeting a nature that an opportunity for observing them must occur comparatively seldom. This fact leads me to place upon record brief notes of a somewhat interesting case:
E. S., aged eleven years. First seen on July 25, 1899.
_History._—At 6.45 P. M., on July 24, the patient was struck in the right eye with a cricket ball, made of cork and covered with rag cloth.
_Present State._—Right eye: Small abrasion of the skin of the lower lid, with a surrounding area of redness. Some general conjunctival congestion, with a definite ecchymosis in the ocular conjunctiva, opposite the lower-outer quadrant of the cornea. Tension minus 1. The pupil distinctly sluggish and a trifle larger than the other one. Anterior chamber deep. A narrow line of blood clot lay at the bottom of the anterior chamber. V. 5/9 (ii. letters). Pupil dilates imperfectly to a mydriatic. With the mirror alone some parts of the fundus oculi were seen to be unduly white. When examined more closely with the ophthalmoscope there was found a wide but defective zone of whitish fundus, situated peripherally upward, inward, and outward. No such appearances could be made out in the lower part of the fundus. The retinal vessels, which lay anterior to the affected areas, showed no changes. In most places it was possible to get beyond the whitish patches so as to see the edges of the latter. These margins were irregular, and showed white, tongue-like projections running into normal fundus. Some small islands of cloudiness lay, however, beyond the area of general haziness. Around the yellow-spot region was a white radiating appearance, but no definite white mass was present in that place. Left eye: No fundus changes. V. 5/5 (iv. letters). Tension normal.
_Treatment._—Vaseline to abrasion of skin of lid; atropine drops (2 grs. to the ounce—to each eye twice a day); rest in bed.
_Progress._—July 26. R. V. 5/12; tension still rather low. The blood clot present in anterior chamber and also on anterior capsule of lens renders it difficult to see the fundus clearly; but no white patches can be made out in the fundus.