A treatise on the diseases of the eye / By W. Lawrence.

  • Sir William Lawrence, 1st Baronet
Date:
1847
Catalogue details

Licence: Public Domain Mark

Credit: A treatise on the diseases of the eye / By W. Lawrence. Source: Wellcome Collection.

Provider: This material has been provided by the Harvey Cushing/John Hay Whitney Medical Library at Yale University, through the Medical Heritage Library. The original may be consulted at the Harvey Cushing/John Hay Whitney Medical Library at Yale University.

    876/920 page 838
    ^ introduced by the late Mr. Ware,* of placing in the lachrymal sac and duct what he calls a nail-headed style [see fig. 138], Fig. 138. Fig. 139. that is, a cylindrical piece of silver, about the thick- ness of an ordinary probe, long enough to reach from the corner of the eye to the termination of the nasal duct, with a head like that of a nail placed obliquely at its upper end, which is a little curved, so that the style may sit close in the corner of the eye. The sac must be opened by an external in- cision below the tendon of the orbicularis palpebra- rum [see fig. 140], and the obstruction of the duct must be cleared by adequate pressure with a probe, as in other modes of proceeding. The style may then be introduced, taking care that its head is secured, so as to prevent it from sinking into the wound, as it is intended that its head should rest on the integuments in the corner of the eye, where, being blackened, it appears as a small black patch. Instead of introducing the style immediately, I prefer placing a portion of bougie in the duct, turning down its upper end [fig. 139], so as to prevent it from sinking into the sac. The small end of Fig. 140. u the smallest bougie will answer the purpose; the length should be an inch and a half, or rather less. In one or two days this should be removed, and the passages may be cleared by gently injecting a little tepid water through the wound by means of Anel's syringe, on which a blunt end is screwed when it is employed for this purpose. Another piece of bougie, of the same or a larger size, is then introduced, and this plan is continued, with a gradual increase in the size of the bougie, for a week or ten days. The * Observations on the Treatment of the Fistula Eachrymalis, 8vo., London, 1798. These observations are reprinted, together with an Essay on the Epiphora or Watery Eye, and Additional Remarks on the Epiphora, in a volume of tracts on the eye, pub- lished after the death of the author by his son, Mr. Martin Wake. Plate ii. of this volume contains figures representing the styles.
    digitised image 1
    digitised image 2
    digitised image 3