The Influence of Silicone Oil on Nerve Fiber Layer Thickness After Pars Plana Vitrectomy
Panoramica dello studio
Stato
Intervento / Trattamento
Descrizione dettagliata
The aim of the study is to evaluate the influence of silicone oil on thickness of the retinal nerve fiber layer by using optical coherence tomography (OCT) in patients following pars plana vitrectomy.
The study will include 60 patients with a temporary silicone oil tamponade who will be surgically treated with pars plana vitrectomy for rhegmatogenous retinal detachment and proliferative vitreoretinopathy. All subjects will be subdued to complete ophthalmologic examinations, measurements of the retinal nerve fiber layer thickness by an OCT examination, tests of the visual field with the use of an Octopus computed perimeter (automated static perimetry) and FDT-perimetry - both prior to the surgery, and on control visits for check-up during the postoperative period.
All results provided by postoperative examinations will be compared with one another.
The study is expected to provide data on the effect of the silicone oil on thickness of the retinal nerve fiber layer. It is also planned to show possibilities and advantages of OCT as a method of choice in the follow-up of patients with intraocular silicone oil tamponade.
Tipo di studio
Iscrizione (Effettivo)
Contatti e Sedi
Luoghi di studio
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Zagreb, Croazia, 10000
- University Department of Ophthalmology, University Hospital "Sestre milosrdnice", Vinogradska 29
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Criteri di partecipazione
Criteri di ammissibilità
Età idonea allo studio
Accetta volontari sani
Sessi ammissibili allo studio
Metodo di campionamento
Popolazione di studio
Descrizione
Inclusion Criteria:
- patients with rhegmatogenous retinal detachment
Exclusion Criteria:
- preexistent glaucoma
- previous retinal surgery
- placement of scleral buckle during surgery
- patients with more than 1/2 of emulsified silicone oil in anterior chamber postoperatively
- patients who develop silicone oil keratopathy postoperatively
- patients who develop silicone oil cataract which blocks visualization of posterior segment
Piano di studio
Come è strutturato lo studio?
Dettagli di progettazione
- Modelli osservazionali: Caso di controllo
- Prospettive temporali: Prospettiva
Coorti e interventi
Gruppo / Coorte |
Intervento / Trattamento |
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NO IOP
Patients without raised IOP
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Optical coherence tomography will be performed in all study patients following pars plans vitrectomy and silicone oil tamponade. A fellow eye of each patient will serve as a control. Each patient enrolled in a study will receive 4 measurements:
Altri nomi:
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RAISED IOP
Patients with raised IOP
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Optical coherence tomography will be performed in all study patients following pars plans vitrectomy and silicone oil tamponade. A fellow eye of each patient will serve as a control. Each patient enrolled in a study will receive 4 measurements:
Altri nomi:
In patients with raised intraocular pressure following medications will be employed in order to control the intraocular pressure: Cosopt (dorzolamide hydrochloride-timolol maleate ophthalmic solution; b.i.d.) Ganfort (Bimatoprost, timolol maleate ophthalmic solution; once daily) Alphagan (Brimonidine ophthalmic solution; b.i.d.) In patients with intraocular pressure less than 27 mmHg Alphagan will be prescribed. In patients with intraocular pressure greater than 27 mmHg either Cosopt, or Ganfort will be prescribed under the discretion of treating physician. If intraocular pressure in patients treated with either Cosopt or Ganfort does not drop under 21 mmHg, Alphagan will be added.
Altri nomi:
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Cosa sta misurando lo studio?
Misure di risultato primarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
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Evidence of Retinal Nerve Fibre Layer Thickness Change Measured by Optical Coherence Tomography
Lasso di tempo: 6 months
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Retinal nerve fiber layer thickness change measured by optical coherence tomography might be an additional parameter that could provide new insights into clinical decision making in patients with silicone oil tamponade.
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6 months
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Misure di risultato secondarie
Misura del risultato |
Misura Descrizione |
Lasso di tempo |
|---|---|---|
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Retinal Nerve Fiber Layer Thickness Change in Patients With Raised Intraocular Pressure Secondary to Silicone Oil Endotamponade
Lasso di tempo: 6 months
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To assess whether retinal nerve fiber layer thickness changes in patients with raised intraocular pressure secondary to silicone oil endotamponade.
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6 months
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Collaboratori e investigatori
Investigatori
- Investigatore principale: Mia Zoric Geber, MD, University department of Ophthalmology, University Hospital "Sestre milosrdnice"
Pubblicazioni e link utili
Pubblicazioni generali
- Honavar SG, Goyal M, Majji AB, Sen PK, Naduvilath T, Dandona L. Glaucoma after pars plana vitrectomy and silicone oil injection for complicated retinal detachments. Ophthalmology. 1999 Jan;106(1):169-76; discussion 177. doi: 10.1016/S0161-6420(99)90017-9.
- Al-Jazzaf AM, Netland PA, Charles S. Incidence and management of elevated intraocular pressure after silicone oil injection. J Glaucoma. 2005 Feb;14(1):40-6. doi: 10.1097/01.ijg.0000145811.62095.fa.
- Mastropasqua L, Carpineto P, Ciancaglini M, Falconio G, Harris A. Reproducibility of nerve fiber layer thickness measurements using optical coherence tomography in silicone oil-filled eyes. Ophthalmologica. 2001 Mar-Apr;215(2):91-6. doi: 10.1159/000050836.
- Leung CK, Cheung CY, Weinreb RN, Qiu Q, Liu S, Li H, Xu G, Fan N, Huang L, Pang CP, Lam DS. Retinal nerve fiber layer imaging with spectral-domain optical coherence tomography: a variability and diagnostic performance study. Ophthalmology. 2009 Jul;116(7):1257-63, 1263.e1-2. doi: 10.1016/j.ophtha.2009.04.013. Epub 2009 May 22.
- Kee C, Cho C. Evaluation of retinal nerve fiber layer thickness in the area of apparently normal hemifield in glaucomatous eyes with optical coherence tomography. J Glaucoma. 2003 Jun;12(3):250-4. doi: 10.1097/00061198-200306000-00012.
- Wollstein G, Schuman JS, Price LL, Aydin A, Beaton SA, Stark PC, Fujimoto JG, Ishikawa H. Optical coherence tomography (OCT) macular and peripapillary retinal nerve fiber layer measurements and automated visual fields. Am J Ophthalmol. 2004 Aug;138(2):218-25. doi: 10.1016/j.ajo.2004.03.019.
- Shah NN, Bowd C, Medeiros FA, Weinreb RN, Sample PA, Hoffmann EM, Zangwill LM. Combining structural and functional testing for detection of glaucoma. Ophthalmology. 2006 Sep;113(9):1593-602. doi: 10.1016/j.ophtha.2006.06.004.
- Yalvac IS, Altunsoy M, Cansever S, Satana B, Eksioglu U, Duman S. The correlation between visual field defects and focal nerve fiber layer thickness measured with optical coherence tomography in the evaluation of glaucoma. J Glaucoma. 2009 Jan;18(1):53-61. doi: 10.1097/IJG.0b013e318179f751.
- Inoue M, Iriyama A, Kadonosono K, Tamaki Y, Yanagi Y. Effects of perfluorocarbon liquids and silicone oil on human retinal pigment epithelial cells and retinal ganglion cells. Retina. 2009 May;29(5):677-81. doi: 10.1097/IAE.0b013e318196fca1.
- Zoric Geber M, Bencic G, Vatavuk Z, Ivekovic R, Friberg TR. Retinal nerve fibre layer thickness measurements after successful retinal detachment repair with silicone oil endotamponade. Br J Ophthalmol. 2015 Jun;99(6):853-8. doi: 10.1136/bjophthalmol-2014-305839. Epub 2014 Dec 15.
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Inizio studio
Completamento primario (Effettivo)
Completamento dello studio (Effettivo)
Date di iscrizione allo studio
Primo inviato
Primo inviato che soddisfa i criteri di controllo qualità
Primo Inserito (Stima)
Aggiornamenti dei record di studio
Ultimo aggiornamento pubblicato (Stima)
Ultimo aggiornamento inviato che soddisfa i criteri QC
Ultimo verificato
Maggiori informazioni
Termini relativi a questo studio
Parole chiave
Termini MeSH pertinenti aggiuntivi
- Malattie degli occhi
- Malattie retiniche
- Distacco della retina
- Effetti fisiologici delle droghe
- Agenti adrenergici
- Agenti neurotrasmettitori
- Meccanismi molecolari dell'azione farmacologica
- Agenti antipertensivi
- Agonisti del recettore adrenergico alfa-2
- Alfa-agonisti adrenergici
- Agonisti adrenergici
- Brimonidina Tartrato
Altri numeri di identificazione dello studio
- KBSM-30-1/10
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