. L'ophtalmoscope : son mode d'application expliqué, et sa valeur montrée, dans l'exploration des maladies internes affectant l'oeil. Une grande tache d'ecchymose sous theretina, qui membrance est lacéré; Mais nous ne pouvons pas traquer la source du sang jusqu'à la rupture d'un vaisseau individuel.l'hémorragie rétinienne est généralement limitée dans la mesure; elle peut être profanée lorsqu'elle se produit du choroïde. L'effusion de sang dans l'humeur vitreuse n'est pas ac-compagnée par la rougeur du globe oculaire; l'oeil maintient ex-ternally une apparence parfaitement normale. Les symptômes physiologiques sont une perte soudaine de la vue

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. The ophthalmoscope : its mode of application explained, and its value shown, in the exploration of internal diseases affecting the eye. a large spot of ecchymosis under theretina, which membrance is lacerated; but we cannot tracethe source of the blood to the rupture of an individual vessel.Retinal haemorrhage is generally limited in extent; it may beprofuse when it proceeds from the choroid. Effusion of blood into the vitreous humour is not ac-companied by redness of the eyeball; the eye maintains ex-ternally a perfectly normal appearance. The physiological symptoms are sudden loss of sight, with the appearance before the eye of variously colouredflashes oflight or sparks of fire. If the accident occur during 44 THE OPHTHALMOSCOPE. sleep, the patient discovers his loss of sight in the morningwithout having felt anything. Some patients can still discernlarge objects; but I have never met with any one who couldread even the largest type. In very copious haemorrhages, the prognosis is unfavour-able, and relapses frequently occur; in slight cases, the eyerecovers readily, but often remains weak for several months. Fig. 2.. Nyctalopia, with muscse floating and fixed. (Nyctalopia)—Day Blindness—with Muscle. T. J. aged 46, a sailor in the Queens service, was senthome from Constantinople. He stated that his health hadbeen always good, except on one occasion when he sufferedfrom syphilitic disease seventeen years ago. In the month of THE OPHTHALMOSCOPE. 45 March, while in the Crimea, after having lived entirely onsalt provisions without vegetables, and at the same timeexposed to the cold winds and hail, during three weeks workin snow, he was attacked with a bleeding at the nose whichlasted five hours, which ceased when he was made warm andcomfortable. Four days after this, his eyes were muchinflamed and ran with water; this attack lasted about threeweeks, during which time he found he could only see aboutnight-fall; he was unable to find his way about, and was sentto h

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• bookcentury1800
• bookdecade1850
• bookpublisherlondo
• bookyear1858