Atlas of the external diseases of the eye : including a brief treatise on the pathology and treatment / by O. Haab ; edited by G. E. de Schweinitz.

  • Haab, O. (Otto), 1850-1931.
Date:
1899
Catalogue details

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 ; edited by G. E. de Schweinitz. Source: Wellcome Collection.

Provider: This material has been provided by UCL Library Services. The original may be consulted at UCL (University College London)

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    face, differences in the palpebral fissures of the two eyes and in the size and shape of the eyeballs, are best appre- ciated from a distance. If there is a squint of one eye, we test the mobility of the eyeball by making the patient look to either side and up and down. The same examination is repeated if one eye is more prominent than its fellow, a condition called pro- trusion. Under certain circumstances testing the mobility may have to be postponed, and inspection is continued. The region of the lachrymal sac (to the nasal side of the inner can thus) is first examined. If the least degree of swelling, and especially if redness, is observed, it ought to suggest catarrh or inflammation of the lachrymal sac—in short, dacryostenosis, which must then be borne in mind. The abnormal contents of the sac can often be squeezed out by pressure with the finger through the lachrymal pnncta, even when there is no visible swelling of the lachrymal sac, and only a slight increase of fluid in the eye—so- called swimming of the eye—to suggest defective dis- charge of the lachrymal fluid. Dacryostenosis cannot be diagnosed with certainty with- out flushing the lachrymal duct, a procedure which is best undertaken at the end of the examination. We shall dis- cuss this point in detail when we come to treat of disease of the lachrymal apparatus. Before proceeding to the study of the eye itself and any defects there may be in it, a rapid inspection is made of the eyelids for the purpose of noting any abnormal condi- tions, such as misplaced cilia or deformed or diseased palpebral margins ; for these structures are frequently the seat of disease. It should be carefully noted whether the lachrymal puncta are in their proper places (at the nasal extremity of the lid) and whether they communicate with the tear-lake (lacus lacrimalis). If the eye is opened naturally, the region of the palpe- bral fissure is inspected without touching the lids. If the palpebral fissure is too narrow, the lids may be gently drawn apart and. the inner surface of the lower lid ex-