Iridoschisis; essential iris atrophy

Iridoschisis-A Systematic Review

Iridoschisis is a rare condition defined as a separation of the anterior iris stroma from the posterior stroma and muscle layers. In this paper, we review current data about the epidemiology, pathophysiology, clinical characteristics and differential diagnoses of this condition and discuss the specificity of surgical treatment of concomitant ocular diseases in iridoschisis patients. Iridoschisis may pose a challenge for both an ophthalmologist in an outpatient setting and an ophthalmic surgeon. Glaucoma, primarily angle-closure glaucoma, is the most often described condition concomitant to iridoschisis. Other ocular abnormalities found relatively often in iridoschisis patients include cataract, lens subluxation and corneal abnormalities. Special attention has been paid to potential complications of cataract surgery and prevention thereof. Beside addressing the practical aspects, we point to discrepancies and suggest topics for further investigation.

Problemi di Genetica Oculistica: V. Coppia gemellare DZ con Atrofia dell'Iride concordante e Buftalmo discordante

The Authors report on dizygotic twins of 7 months and of different sex. Both twins were affected by iris atrophy, which in the male was associated with buphthalmos acquired at about 6 months of age.

The hypothesis is made that the primitive heredity consists in the iris malformation and that in this case the buphthalmos is secondary to it.

Iridoschisis: case report and review of the literature

Iridoschisis is a rare condition that consists of the separation of the anterior mesodermic layer of the iris. In more than two-thirds of cases it is associated with glaucoma. We report the case of an 80-year-old patient who had bilateral iridoschisis and presented with acute angle-closure glaucoma. The patient was free from a history of ocular trauma or of heritable ocular disease. Chronic open-angle glaucoma, as well as intermittent angle-closure glaucoma, should be excluded in all patients with iridoschisis, and regular follow-up should be established upon diagnosis of the entity.

Iridoschisis

Iridoschisis is a rare condition in which a localised area of iris stroma is cleaved in two with the anterior atrophic portion disintegrating into fibrils. The most common presentation of iridoschisis is as an age-related iris atrophy in association with glaucoma. The association includes angle-closure glaucoma, angle-recession glaucoma and open-angle glaucoma. A finding of iridoschisis is a warning to the clinician to assess the patient for pre-existing glaucoma and to monitor for glaucomatous changes as it is unclear if iridoschisis is a cause or an effect of raised intraocular pressure (IOP).

A family with iridoschisis, narrow anterior chamber angle, and presenile cataract

Familial iridoschisis is a rare ocular disease and is probably transmitted as an autosomal dominant trait. The underlying abnormalities are not understood. Family members should be screened for this condition as well as for associated ocular abnormalities, namely presenile cataracts and narrow anterior chamber angle.