Atlas of the external diseases of the eye : including a brief treatise on the pathology and treatment / by O. Haab ; Authorized translation from the German, edited by G.E. de Schweinitz.
- Haab O. (Otto), 1850-1931.
- Date:
- 1899
Licence: Public Domain Mark
Credit: Atlas of the external diseases of the eye : including a brief treatise on the pathology and treatment / by O. Haab ; Authorized translation from the German, edited by G.E. de Schweinitz. Source: Wellcome Collection.
Provider: This material has been provided by the Royal College of Physicians of Edinburgh. The original may be consulted at the Royal College of Physicians of Edinburgh.
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![the loss of more or less vitreous body, such perforating wounds are the means of introducing infectious material into the interior of the globe, and as the latter is an ex- cellent culture-medium, the purulent inflammation rapidly spreads to the retina and uveal tract. In exceptional cases ru})ture of the sclera takes [)lace without tearing the conjunctiva, so that the rent does not communicate with the outside. In such cases the lens, instead of being forced completely through tlie rent, as it usually is, may only prolapse as far as the conjunctiva (Plate 34, b). Piipt- ure usually takes place above the cornea, in a line parallel to the margin; sometimes to one side of the cornea (Plate 34, b). The accident is very often followed by a large hemorrhage into the vitreous—hemophthalmos—the retina becomes seriously involved (retinitis proliferans), and total or partial blindness usually results. A large escape of vitreous, especially if mixed with blood, is followed sooner or later by separation of the retina and total blindness. Wounds inflicted with a knife, scissors, or broken glass may heal satisfactorily, if they do not become septic; they are not attended with as great a loss of vitreous as is a rupture caused by c*ompression of the bulb. A foreign bodij is not as likely to bury itself in the sclera as it is in the cornea; it usually penetrates into the globe and lodges in the vitreous or on the retina. This is particularly the case with piece's of iron, which acquire sufficient momentum to ])ieree the tissues of the sclera. Pieces of copj)er also, from exploding dynamite caps, chips of stone scattered by powder or dynamite blasting, and glass sj)linters from the explosion of glass vessels in labo- ratorv work, etc., often penetrate the sclera. If the splinter is large, it may inflict a considerable wound with- out remaining in the globe; these cases are rare, however, compared witli those in which the splinter penetrates into the interior of the globe ; and the latter event is always to be considered the most likely in making a diagnosis. A perforating wound of the sclera, if extensive and before the edges have become united, reveals itself by re-](https://iiif.wellcomecollection.org/image/b21691587_0232.jp2/full/800%2C/0/default.jpg)
