Iris Repair Techniques
Trauma to the iris can present in various ways depending on its severity and location. Tear at the iris root leads to Iridodialysis, while tears at the pupillary border can damage the sphincter muscle, leading to a partially reactive, atonic or Mydriatic pupil. Tears can be full thickness or partial thickness. Full thickness defect involves the iris stroma and partial thickness involves only the posterior pigment epithelium leading to trans-illumination defects. Traumatic Iridodialysis Traumatic Mydriasis Etiology of iris defects: Iris defects can be a consequence of either: Congenital (iris coloboma) Acquired Iatrogenic (iris lesion removal) Traumatic (traumatic mydriasis or injury resulting in pupil irregularity or muscle tear) Complicated intraocular surgery (can cause dialysis, atonic dilated pupil or iris tissue loss and injury) Symptoms: Patients with photic symptoms due to iris defects complain of: Glare, Haloes in bright light conditions, Diplopia, and Trouble reading Patients
Dr. Hema Joshi, MBBS, DO, DNB · Dr. Sasmita Sanghai