الفهرس 
List of ContentsOnly 14 pages are availabe for public view
 |  | from | 113 |  |  |
| | | from | 113 | | |
Abstract
Retinal detachment of various types is considered one of the main ocular diseases. Pars plana vitrectomy (PPV) is considered one of the main lines of treatment. Silicone oil (SO) provides excellent structural support to maintain retinal attachment due to its high viscosity and surface tension. However, its use has been associated with many complications. Optical coherence tomography (OCT) is a non-invasive technique which provides high-resolution images of the macular layers. In addition, it is a beneficial tool for identification of silicone oil maculopathy even in clinically normal maculae. The current study was conducted to evaluate optical coherence tomography to detect macular changes after the use of silicone oil and its potential impact on decision making of timing of silicone removal in silicone filled eyes that had undergone successful pars plana vitrectomy (PPV) for complicated retinal detachment. The current study was a prospective observational analytical study conducted on 40 eyes of 40 patients with history of retinal detachment (RD) at Ophthalmology Outpatient Clinic at Kafr El-sheikh Main University Hospital from June 2018 to December 2019. For all cases, full history taking followed by complete ophthalmic examination was done. OCT was done within 2 weeks, 3 months and 6 months after PPV and intravitreal injection of SO (5000 cs), to assess thickness of macula, detect macular changes.The most common consistent finding of OCT was epiretinal membrane (16%) followed by disrupted IS/OS (15%), foveal thinning (12.5%), cystoid edema (12.5%), diffuse macular edema (10%) and finally lamellar macular hole (5%). Cases with detached macula had thinner CMT in comparison with cases with attached macula. The thickness of peripapillary retinal nerve fiber layer (RNFL) didn’t show significant changes at the three measurement times. The current study suggested that performing non-contact OCT before the removal of SO is important. It also helps detect macular edema and thinning that could not be detected clinically or intraoperatively during SOR. This procedure should be performed routinely as follow up after PPV and SO endotamponade and before the removal of SO whenever the media allow. OCT is very helpful in decision making of timing of silicone oil removal.