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N M Peter

Publications and source records attributed to N M Peter.

4 recordsLinked to original sources
PubMed2006

Macular hole surgery without prone positioning.

PURPOSE: To investigate the role of vitrectomy without prone posturing in the anatomic and functional outcome of macular hole surgery (MHS). METHODS: Forty-one consecutive eyes of 41 patients with stage II-IV full-thickness macular holes underwent pars plana vitrectomy and 16% C3F8 tamponade. In 25 cases posturing group (P), subjects were instructed to assume prone positioning for 10 days postoperatively, whereas in 16 cases non-posturing group (NP) patients were advised to avoid lying supine but no other posturing instructions were given. Preoperative, intraoperative and postoperative clinical data were collected, with macular hole closure rate and change in LogMAR visual acuity, contrast sensitivity, metamorphopsia, and 25-Visual Function Questionnaire (VFQ-25) being the primary outcome measures. RESULTS: Over a mean follow-up of 4.21.2 months, anatomical hole closure was noted in 22/25 (88%) and 14/16 (87.5%) in groups P and NP respectively. Visual acuity improved by a mean of eight letters and there was no significant difference in the two groups (P=0.724). Similarly, postoperative prone posturing did not have an effect on the final contrast sensitivity, metamorphopsia, and VFQ-25 composite scores (P=0.238, P=0.472, and P=0.87, respectively). However, eyes in group NP developed significantly more severe cataract in the early postoperative period (P=0.02). CONCLUSIONS: Prone posturing following MHS provides no functional or anatomic benefit but it is associated with slower progression of cataract. Combined phacovitrectomy without face down positioning may be considered for all phakic patients undergoing MHS.

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PubMed2004

Transpupillary thermotherapy for the treatment of subfoveal choroidal neovascularization associated with age-related macular degeneration.

OBJECTIVE: To evaluate the efficacy of transpupillary thermotherapy (TTT) for the treatment of choroidal neovascularization (CNV) secondary to age-related macular degeneration (AMD). DESIGN: Prospective, non-randomized, non-masked, case-selected series. METHODS: All patients with subfoveal CNV due to AMD and initial visual acuity (VA) between 6/9 and 6/60 were offered the opportunity to undergo TTT. Recruited subjects were treated using a diode laser (810 nm) with a beam size of 1.2-3.0 mm and power settings of 460-1200 mW. Treatment was applied for 60 seconds in a subthreshold manner. MAIN OUTCOME MEASURES: Differences in VA and changes in the angiographic appearance of CNV. RESULTS: Thirty-one occult/predominantly occult and five classic/predominantly classic membranes were treated with TTT and were followed-up for a mean of 6.0 +/- 1.2 months. Following an average of 1.5 +/- 0.7 (range 1-4) laser sessions, VA remained stable ( -1 to +1 Snellen line) in 24 (66.7%) eyes, improved by > 1 line in two (5.6%) eyes and decreased significantly (> or = 2 Snellen lines) in 10 (27.8%) eyes. Angiographically confirmed closure of CNV was detected in 22 (61.1%) patients. Membranes persisted in 11 (30.6%) eyes and recurred in three (8.3%) eyes. There was no association between reduction, elimination or persistence of angiographic leakage of CNV and change in VA after treatment (p = 0.347). CONCLUSIONS: Transpupillary thermotherapy may be effective at preserving vision and reducing CNV leakage in a number of patients with exudative AMD. Further studies are required to compare TTT with the natural course of subfoveal CNV and alternative treatment options.

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PubMedDate not supplied

Bilateral lens subluxation associated with atopic eczema.

PURPOSE: Ectopia lentis remains a therapeutic challenge for ophthalmologists. It classically presents with a preceding history of blunt or penetrating ocular trauma, or it may be associated with other ocular disorders such as congenital glaucoma and aniridia, or concomitant hereditary systemic diseases such as Marfan syndrome and homocystinuria. METHODS: Case report. RESULTS: The authors describe a previously unreported mechanism of ocular trauma associated with continuous eye rubbing, resulting in bilateral recurrent subluxation of both intraocular lens and crystalline lens. CONCLUSIONS: It is useful for the ophthalmologist to be aware of this uncommon cause of ectopia lentis, since early advice and appropriate medical or surgical intervention may prevent more severe, sight-threatening complications.

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