Text-book of ophthalmology . seclusion of the pupil is not yet indeed complete, but is onthe verge of being so, only one small spot of the pupillary margin being free from if we are dealing with a chronic irido-cyclitis, we can count upon this small spotsoon becoming adherent too, and in that case it is better not to wait for the seclusionof the pupil to become complete. It is particularly advisable not to do so if the patientlives far from the physician, and might perhaps let the proper moment for the iridec-tomy pass by. In seclusio pupillae the iridectomy is made upward. If occlusio
Text-book of ophthalmology . seclusion of the pupil is not yet indeed complete, but is onthe verge of being so, only one small spot of the pupillary margin being free from if we are dealing with a chronic irido-cyclitis, we can count upon this small spotsoon becoming adherent too, and in that case it is better not to wait for the seclusionof the pupil to become complete. It is particularly advisable not to do so if the patientlives far from the physician, and might perhaps let the proper moment for the iridec-tomy pass by. In seclusio pupillae the iridectomy is made upward. If occlusio pupillae is simul-taneously present, we should, according to the rules laid down for an optical iridectomyin § 856, make the coloboma to the inner side and below. But even in these cases it isadvisable to make the iridectomy upward, because it is so often the case that the lensafterward becomes opaque, and in that case a coloboma situated above will be of advan-tage in performing the extraction that will be required 440 TEXT-BOOK OF OPHTHALMOLOGY II. Injuries of the Iris 390. In addition to what has been already said in the previous sectionsin regard to injuries of the iris and their consequences, the following specialvarieties of injury, which are most frequently observed after contusions ofthe eye, may be mentioned: (l) Under the name of iridodialysis9 is designated the separation of theiris from the ciliary body. We then find on one side, at the ciliary marginof the iris, a black crescent which is formed by the separation of the iris fromits insertion at this spot, so that we can there look into the interior of the eye(Fig. 185). When the separation is pretty considerable, the edge of the lens(I), the ciliary processes (p), and the fibers of the zonula of Zinn stretchingbetween the two can be recognized by means of lateral illumination in the gap that is thus produced. The pupil haslost its round form, owing to the factthat the pupillary margin toward theside of the
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