The Causes of Failure after Visual Iridectomy
نویسنده
چکیده
appointment to the patient than this. During the early years of his career the eye-surgeon is also very disappointed with his results after this operation if lie takes the trouble to find out how small the amount of improvement is and he feels inclined to abandon the operation. The common causes of failure are : (1) Iris adherent to cornea. (2) Too small an iridectomy. (3) Extensive opacity of cornea. (4) Adhesions of iris to capsule of lens. (5) Opacity of the lens. Let us next consider the points in operating. In children full chloroform narcosis is essential. Incision.?The text-books tell us that the site of election should be opposite a clear portion of cornea and by preference downwards and inwards, and in this the books are quite right. For the incision a Grtefe's knife should be used and the incision made through sclera and if the patient is steady
منابع مشابه
Optical iridectomy in children with corneal opacities.
BACKGROUND Optical iridectomy creates a clear entrance pupil, improving vision in patients with segmental corneal opacities. An area of clear peripheral cornea can produce retinal images compatible with good visual acuity. MATERIALS AND METHODS The records of 22 children who underwent optical iridectomy from January 2002 to June 2004 were reviewed retrospectively. The optical iridectomy site ...
متن کاملA randomised prospective comparison of operative peripheral iridectomy and Nd:YAG laser iridotomy treatment of acute angle closure glaucoma: 3 year visual acuity and intraocular pressure control outcome.
AIM To compare visual acuity and intraocular pressure outcomes 3 years after treatment of acute angle closure glaucoma (AACG) by operative peripheral iridectomy (PI) or Nd:YAG laser iridotomy (YAG PI). METHODS A prospective study of consecutive patients presenting to one ophthalmology department with uniocular AACG during a 2 year period. Following informed consent patients were randomised to...
متن کاملبررسی تأثیر اعمال جراحی پیوند ثانویه عدسی داخل چشمی
Background and purpose : Many aphahic patients have unfavorable vision either with glasses or contact lens. In this study Visual outcome of Seconary (I.O.L) was implantation in aphakic patients referred to Imam Hossein Haspital 1994 evaluated. Materials and Methods : In a clinical trial with sequential sampling , 30 aphakic patients (26 males , 4 females mean of age 24.4 ± 10.8 years) who...
متن کاملIntraocular production and release of nerve growth factor after iridectomy.
PURPOSE To determine the presence of nerve growth factor (NGF), NGF mRNA, and NGF receptor (TrkA) in rabbit ocular tissues, and whether changes occur in NGF and NGF mRNA levels after experimental iridectomy. METHODS Immunohistochemistry for NGF and TrkA and in situ hybridization for NGF mRNA were performed on rabbit cornea, iris, ciliary body, and lens in the basal state. Quantification of NG...
متن کاملDescemet membrane endothelial keratoplasty for corneal decompensation due to iridoschisis
Purpose To report a case of bilateral iridoschisis with cataracts and corneal decompensation in a patient who underwent cataract extraction and superficial iridectomy followed by Descemet membrane endothelial keratoplasty (DMEK). Observations A 58-year-old man with previously diagnosed iridoschisis, cataracts, and diabetes mellitus experienced progressive vision loss bilaterally due to cornea...
متن کامل