Text-book of ophthalmology . f the dense cicatricial tissue(dystrophies, see page 309). Such processes may give rise to the softening and ulcerativedisintegration of old scars—so-called atheromatous ulcers, which not infrequently induceperforation (page 261). 261. With many scars incarceration of the iris occurs. This is a proofthat there has been an antecedent perforation of the cornea; hence suchscars are always very opaque. It is important to determine in any specialcase whether a scar of the cornea is or is not connected with the iris, sincean incarceration of the iris may entail serious c
Text-book of ophthalmology . f the dense cicatricial tissue(dystrophies, see page 309). Such processes may give rise to the softening and ulcerativedisintegration of old scars—so-called atheromatous ulcers, which not infrequently induceperforation (page 261). 261. With many scars incarceration of the iris occurs. This is a proofthat there has been an antecedent perforation of the cornea; hence suchscars are always very opaque. It is important to determine in any specialcase whether a scar of the cornea is or is not connected with the iris, sincean incarceration of the iris may entail serious consequences. We recognizethe presence of such an anterior synechia by the displacement of the pupiltoward the site of the incarceration, and furthermore by the unequal depthof the anterior chamber, which is always shallower near the place wherethe iris is adherent. In many cases, also, the dark color of the cicatrix givesevidence of the incarcerated iris, the pigment of which shows through thecicatricial tissue (Fig. 118)..
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