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Refractive Error Changes Following Strabismus Surgery

When severe, anterior segment ischemia can progress to necrosis and phthisis bulbi, but most cases resolve with corticosteroids over time. Furthermore, topographic irregularity may be judged inconsistently if quantitative standards are not applied. The authors measured the patients’ best-corrected visual acuity and ocular alignment using the prism cover test and the Modified Krimsky tests,respectively. I have found that the change in some cases is significant enough but I am currently collecting only the retrospective data. Source

AAO, Basic and Clinical Science Course, Section 6: Pediatric Ophthalmology and Strabismus, 2009-2010. 2. Most of the blood supply to the anterior segment flows through the ciliary arteries within the four rectus muscles. Awad AH, Mullaney PB, Al-Hazmi A, et al. We found no significant change in the spherical equivalent between the pre- and postoperative measurements. http://www.ncbi.nlm.nih.gov/pubmed/1432517

Login Login with your LWW Journals username and password. AAPOS Frequently Asked Questions about Strabismus Surgery References[edit | edit source] 1. Therefore, a larger prospective control trialwould be necessary to definitively answer this question.Keywords: Astigmatism, Horizontal strabismus surgeryChanges in refractive error have been reportedafter horizontal rectus muscle surgery. Suh, M.D.,FAAP Review: Assigned status Update Pending by Donny W.

In addition, dellen or exposed and loosened sutures can be identified and treated. Other forms of specialized testing, such as an iris angiogram for anterior segment ischemia, are typically performed in a research setting rather than in standard clinical practice. For a lost muscle, an attempt should be made to retrieve the muscle promptly, during the same surgery if possible. Small amounts of residual vertical or torsional misalignments can be difficult to fuse into a single image, particularly if the misalignment is opposite to the pre-operative misalignment (overcorrection).

YinY. The changes inrefractive status following routine strabismussurgery. and Yasser I.Abdullah, MD Assigned editor: Donny W. http://www.healio.com/ophthalmology/journals/jpos/1992-9-29-5/%7Bd3231b97-6a6a-46db-882a-fc82802d728e%7D/refractive-error-changes-following-strabismus-surgery For example, operating on two horizontal muscles can induce a small with-the-rule astigmatism.

A lost muscle can occur with any type of strabismus surgery, but is more common when operating on the medial rectus and inferior rectus because of the shorter arc of contact Email: Password Sent Link to reset your password has been sent to specified email address. Saunders RA, Bluestein EC, Wilson ME, Berland JE. The exact etiology is unclear, since the occurrence rate appears equal in primary and secondary surgeries and the existence of a prior granuloma does not appear predictive of subsequent granulomas.

Descriptive statistics were used to analyze the data. • Results: A total of 30 patients (50 eyes) were enrolled in the present study. More Help Copyright © 2016 Wolters Kluwer Health, Inc. For infections, gram stains and cultures (either of the conjunctiva or, in the case of scleral perforation and possible endophthalmitis, of the vitreous) can aid with diagnosis and treatment. The risk can also be reduced by direct placement of scleral sutures at the site of the new insertion, instead of utilizing a hang-back technique from the original insertion.

You'll get easier access to your articles, collections, media, and all your other content, even if you close your browser or shut down your computer. this contact form Schworm HD, Ullrich S, Hoing C, Dittus C, BoergenKP. Of those, 35 patients received unilateral lateral rectus recession (BLR group, 35 eyes) and 34 patients received unilateral lateral rectus recession and medial rectus resection (R&R group, 34 eyes). This complication can be exacerbated by advancement of Tenon’s capsule too close to the limbus, particularly during a resection, or by advancement of the plica semilunaris onto the bulbar conjunctiva.

Scleral perforations are more likely if the sclera is thinned from any of a number of eye conditions, most commonly high myopia. Full-text · Article · Jan 1995 M K SmolekS D KlyceN MaedaRead full-textShow moreRecommended publicationsArticleKerato refractive Surgery: New horizonOctober 2016 · AORN journalNeil C GastonRead moreArticleConductive keratoplasty.October 2016 · IEEE Engineering Suh, MD,FAAP, K. have a peek here A prospec-tive, controlled trial with long-term follow-up wouldhave more power to find out the final refractive statusof the patient.AcknowledgmentThe authors wish to thank Mr.

The risk of anterior segment ischemia can be minimized by limiting the number of muscles operated on in each eye, by utilizing botulinum toxin, and by using special surgical techniques to Postoperative refractive changes in childrenwith congenital esotropia: a preliminary study.Ophthalmic Surg 1989; 20: 57-62.4. Diplopia is a necessary but short-lived complication of eye muscle surgery in many patients.

J Cataract Refract Surg 1992; 18:429-43.15.

Surgical follow up[edit | edit source] Post-operative follow up should follow the standard of care for the surgery performed. The system returned: (22) Invalid argument The remote host or network may be down. Preplaced marking sutures can allow easy identification of the edges of the conjunctival wound at the end of surgery, allowing easy distinction from the underlying Tenon’s capsule. Anterior segment ischemia is more common in older patients with microvascular risks factors such as diabetes and hypertension.

There was no statistically significant difference in the magnitude of changes in SE, J0 and J45 between the two groups after the 6-month follow-up (p = 0.500, p = 0.244 and Foreign body granulomas occur sporadically in susceptible patients. The granuloma typically presents at the suture site as a localized, elevated, hyperemic mass that is less than 1 cm in diameter. Check This Out The risk of scleral perforations is increased if the sclera is thinned and also if there is significant scarring or hemorrhage (more common during a re-operation) that may impede exposure of

Hainsworth DP, Bierly JR, Schmeisser ET, BakerRS. In contrast to previous studies, astigmatism was not significantly affected by horizontal rectus muscle surgery; however, the present study population was small. Nine patients (56.25%) had exotro-pia and seven (43.75%) esotropia. Prisms may also be used in select cases to alleviate diplopia.

Occasionally, the patient may not notice a problem for many months or even years, as in the case of a conjunctival inclusion cyst or late change in eye alignment. It can be difficult to create space at the muscle insertion to allow a full-thickness suture pass to encompass both the muscle capsule and muscle belly. We found no significant change in the spherical equivalent between the pre- and postoperative measurements. Thompson WE, Reinecke RD.

Invest Ophthalmol Vis Sci1984; 25: 88-92.17. In other situations, the prisms can be weaned slowly over time as fusional mechanisms build, allowing single binocular vision without prisms. The risk of a lost muscle increases with poor overall systemic health, with extensive scarring from prior eye surgery, and with surgery on a tight, contracted muscle. An initially unsatisfactory post-operative alignment may or may not require surgical correction.

Sometimes, these reactions can be difficult to distinguish from post-operative infections since they tend to occur in the same time frame. All rights reserved.About us · Contact us · Careers · Developers · News · Help Center · Privacy · Terms · Copyright | Advertising · Recruiting We use cookies to give you the best possible experience on ResearchGate. It is commonly thought that these astigmatic changes are due to transmittance of tractional forces on the cornea from the extraocular muscles causing a change in the curvature of the cornea. Slipped and lost extraocular muscles.