الفهرس 
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Abstract
Intra-ocular foreign body (IOFB) injuries refer to a foreign body present anywhere inside the interior of the globe.The incidence of foreign body in the eye is high especially in the industrial towns. It can occur at any age and in both genders. Intra-ocular foreign bodies may be removed by pars plana vitrectomy. However, one of the most serious complications of IOFB removal is retinal break, causing retinal detachment, as well as post-traumatic proliferative vitreo-retinopathy (PVR). The current study was conducted to describe the outcomes in cases of retained IOFB after removal by pars plana vitrectomy.The present study is a prospective case series interventional study that was conducted on 34 patients of any age and of both genders, with magnetic or non-magnetic IOFB, who underwent pars plana vitrectomy for surgical removal during the period from November 2019 to October, 2020, and attending to the outpatient and emergency unit of Mansoura Ophthalmic Center, Mansoura University. As regards the demographic characteristics of the studied patients, the mean age of the studied patients was 34.94 ± 10.946 years. The majority of patients (94.1%) were males. Most of the studied patients were at occupational exposure (73.5%).The current results showed that the majority of IOFBs in the studied patients were metallic (64.7%), while 35.3% were non-metallic. Most of the studied foreign bodies were located in the vitreous (50.0%), 32.4% were on the retina, 8.8% were present related to the optic disc, while 8.8% were lenticular. The cornea was the major site of foreign body entry (88.2%), followed by the sclera (11.8%). In addition, the present study displayed that in the 1st visit, the mean value of BCVA improved to 0.13 ± 0.121, and then continue to improve in the follow-up visits to 0.16 ± 0.156 in the 2nd visit, 0.19 ± 0.176 in the 3rd visit, and 0.24 ± 0.223 in the 4th visit. Accordingly, there were statistically significant differences between the mean value of BCVA in the 1st visit and these in the 2nd, 3rd, and 4th follow-up visits.Furthermore, the present work demonstrated strongly significant and positive correlations between BCVA and each of Ocular Trauma Row Score, vitreous foreign body, and initial visual acuity, while statistically significant and negative correlation was found between BCVA and size of foreign body.As well, statistically significant and negative correlation was found between PVR and Ocular Trauma Row Score, while positive correlations were found between PVR and each of lenticular and retinal foreign body impaction.In conclusion, in the current study IOFB removal by PPV through anterior segment approach was effective, safe, with minimal complications as well as Better visual outcome. Initial visual acuity after trauma, mode of the injury, presence of RAPD, posterior extent of the wound, presence of significant vitreous loss adversely affect the final visual outcome. Ocular trauma score (OTS) can successfully predict the final vision outcome in patients with open globe injury and hence should be more widely used by ophthalmologists across the world for counseling of trauma victim and family.Moreover, better visual outcome and improvement of the final BCVA can be predicted when there are smaller foreign body size, vitreous foreign body impaction, more initial visual acuity, less afferent pupillary defect, and more ocular trauma raw score.