Related Experiment Video
Updated: Aug 9, 2026
05:22
Iris Fixation via External Pentagram Suturing
Published on: May 5, 2022
Optical iridectomy for corneal opacities in Peter's anomaly
G W Zaidman1, Y Rabinowitz, S L Forstot
1Department of Ophthalmology, Westchester County Medical Center, New York Medical College, Valhalla 10595, USA.
Journal of Cataract and Refractive Surgery
|June 4, 1998
Summary
Optical iridectomy is a viable surgical option for congenital corneal opacities in Peter's anomaly type 1. This procedure can improve vision by repositioning the pupil away from the opacity, aiding visual development.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Corneal Surgery
Background:
- Peter's anomaly type 1 presents with partial corneal opacity and anterior segment anomalies in children.
- Congenital corneal opacities can obstruct the visual axis, impacting visual development.
- Traditional treatments like penetrating keratoplasty may have limitations in certain pediatric cases.
Observation:
- Three children with Peter's anomaly type 1 and off-center corneal scars encroaching on the visual axis were studied.
- Glaucoma, when present, was medically or surgically controlled prior to the iridectomy.
- An optical iridectomy was performed in each affected eye as an alternative to corneal transplantation.
Findings:
- Following optical iridectomy, the pupil successfully extended beyond the corneal opacity in all patients.
- A slight decrease in corneal opacity was observed post-surgery.
- All children demonstrated improved visual fixation and following abilities around the opacity.
Implications:
- Optical iridectomy offers a potential surgical solution for selected cases of congenital corneal opacities.
- This technique may be a valuable alternative to penetrating keratoplasty in pediatric patients with Peter's anomaly.
- Early intervention with optical iridectomy could positively influence visual development in affected children.
Related Concept Videos
01:25Glaucoma: Overview
Glaucoma is an eye condition characterized by increased intraocular pressure that damages the retina and optic nerve, leading to irreversible blindness if left untreated. The human eye has various components, including the cornea, iris, pupil, lens, and optic nerve. Aqueous humor is secreted by the epithelium of the ciliary body in the posterior chamber and flows through the trabecular meshwork and canal of Schlemm, maintaining normal intraocular pressure. The trabecular meshwork and the canal...
01:27Open Angle Glaucoma: Treatment
In open-angle glaucoma, the iridocorneal angle remains open, but the trabecular meshwork becomes stiff, slowing down the outflow of aqueous humor. This causes a buildup of aqueous humor in the anterior chamber, leading to a sudden increase in intraocular pressure. The treatment for open-angle glaucoma focuses on reducing the elevated intraocular pressure by either decreasing the secretion of aqueous humor or increasing its outflow.
Drugs such as carbonic anhydrase inhibitors, α2- and...
Drugs such as carbonic anhydrase inhibitors, α2- and...
01:28Angle Closure Glaucoma: Treatment
Angle-closure glaucoma, or closed-angle glaucoma, is an eye condition where the iris bulges out and blocks the iridocorneal angle, resulting in a buildup of aqueous humor and increased intraocular pressure. Immediate medical attention is necessary due to the sudden onset of symptoms. The treatment for angle-closure glaucoma includes short-term and long-term approaches. Short-term treatment involves using eye drops like pilocarpine to lower intraocular pressure by increasing aqueous humor...