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5 results on '"Islam S H Ahmed"'

1. The Flip and Fix internal limiting flap technique versus the classic temporal flap for macular hole repair

Author

Mohsen Abou Shousha, Mohamed M Lolah, and Islam S H Ahmed

Subjects
internal limiting membrane, macular hole, nonheparinized blood, pars plana vitrectomy, perfluorocarbon liquid, Ophthalmology, RE1-994
Abstract

Purpose: To describe a novel technique of macular hole (MH) repair and compare it to the perfluorocarbon liquid (PFCL)-assisted temporal internal limiting membrane (ILM) flap technique. Methods: Twenty-two eyes of 22 patients with MH were randomized on a 1:1 basis into two groups. Group A cases were treated using the Flip and Fix technique, in which the single-layer ILM flap was flipped, flattened over the macula using PFCL, and fixed in place using two drops of autologous nonheparinized blood over the superonasal and inferonasal edges of the flap (away from the MH center). Group B patients had the classic temporal ILM flap technique without using the PFCL or autologous blood. All patients were followed up for a period of 6 months after the surgery. Results: No significant difference was observed in initial and final visual acuities between Groups A and B. Intraoperative flap displacement did not occur in Group A and occurred in two eyes in Group B (18.2%). One of them showed failed MH closure and required reoperation. These two cases had a final (W shape) MH closure and a worse final vision than the remaining cases, which had either a U shape or V shape final MH closure. Conclusions: The study results show that the Flip and Fix technique is as effective as the PFCL-assisted temporal ILM flap technique and is associated with less ILM flap displacement risk for the repair of macular holes.

Published
2024
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2. Development and international validation of custom-engineered and code-free deep-learning models for detection of plus disease in retinopathy of prematurity: a retrospective study

Author

Siegfried K Wagner, Bart Liefers, Meera Radia, Gongyu Zhang, Robbert Struyven, Livia Faes, Jonathan Than, Shafi Balal, Charlie Hennings, Caroline Kilduff, Pakinee Pooprasert, Sophie Glinton, Meena Arunakirinathan, Periklis Giannakis, Imoro Zeba Braimah, Islam S H Ahmed, Mariam Al-Feky, Hagar Khalid, Daniel Ferraz, Juliana Vieira, Rodrigo Jorge, Shahid Husain, Janette Ravelo, Anne-Marie Hinds, Robert Henderson, Himanshu I Patel, Susan Ostmo, J Peter Campbell, Nikolas Pontikos, Praveen J Patel, Pearse A Keane, Gill Adams, and Konstantinos Balaskas

Subjects
Health Information Management, Medicine (miscellaneous), Decision Sciences (miscellaneous), Health Informatics
Published
2023

3. Prevalence of diabetic retinopathy in patients with diabetes in Alexandria and North-West Delta, Egypt

Author

Ahmed Elmassry, Islam S. H. Ahmed, Noha Adly, and Marwan Torki

Subjects
Ophthalmology
Abstract

Purpose The purpose of this research was to estimate the prevalence of DR in Alexandria and the North-West Delta region. Methods All diabetic patients attending the general ophthalmology clinics (Group 1), diabetic internal medicine clinics (Group 2), or reached out in the local communities (Group 3) were eligible to participate. Fundus photographs were graded according to the Scottish DR grading system by three independent UK-certified graders. Adjudication by a consultant was done when needed. Results Out of 11,033 screened patients, 10,811 had a gradable fundus photograph in at least one eye and were included. The numbers of cases in groups 1, 2 and 3 were 3940, 2826, and 4045, respectively. Males represented 38.35% of the cases. Mean age was 55 ± 12.63. For the whole sample, groups 1, 2 and 3, the DR prevalence was 32.49, 46.4%, 29.13%, and 21.29%, respectively. The prevalence of proliferative DR (grade R4) was 6.16%, 11.83%, 5.02%, and 1.45%, respectively, and of referable maculopathy (Grade M2) was 19.95%, 31.42%, 15.92%, and 11.59%, respectively. In univariate analysis, older age, higher random blood glucose, and longer DM duration were associated with a higher risk of both DR and referable diabetic maculopathy. This association was maintained in multivariate analysis for the high random blood glucose level and the longer duration of DM (but not for the older age). Conclusion A significantly higher prevalence of DR, grades R4 and M2 was found in the hospital-recruited patients than in diabetics from the local communities.

Published
2023

4. Evaluation of the use of NGage® Nitinol stone extractor for intraocular foreign body removal

Author

Samir Mohammed, El-Baha, Mohsen Ahmed, Abou Shousha, Tarek Abdelrazek, Hafez, and Islam S H, Ahmed

Subjects
Male, Eye Foreign Bodies, Vitrectomy, Alloys, Humans, Eye Injuries, Penetrating, Retrospective Studies
Abstract

To describe a novel technique to use the NGage® Nitinol Stone Extractor for large IOFB extraction.We conducted a retrospective case series study by reviewing the data of 4 eyes with retained large IOFB extracted with the use of the NGage® Nitinol Stone Extractor. The study was conducted in a single tertiary referral center on four eyes of four patients with large retained IOFB. Studied eyes were treated by pars plana vitrectomy (PPV) and IOFB extraction by using the NGage® Nitinol Stone Extractor through a limbal incision.Four eyes of four male patients with large Retained IOFB were included in the study. The nature of the IOFB was metallic in 2 eyes, glass in 1 eye or ceramic 1 eye. All the IOFB were removed from a limbal wound. Silicone oil tamponade was required in 3 eyes. Two eyes required reoperation. At 6 months postoperative, the final visual acuity using Snellen chart ranged between PL and 0.1.The NGage® Nitinol Stone Extractor can be a useful tool for the extraction of the large retained IOFB.

Published
2021

5. Trimanual vitrectomy for severe proliferative diabetic retinopathy

Author

Samir Mohammed, El-Baha and Islam S H, Ahmed

Subjects
Adult, Diabetic Retinopathy, Vitrectomy, Diabetes Mellitus, Retinal Detachment, Visual Acuity, Humans, Prospective Studies, Middle Aged, Aged, Retrospective Studies
Abstract

To describe and evaluate a novel technique of pars plana vitrectomy (PPV) under chandelier illumination which is aided with the vital dyes and perfluorocarbon liquids for the management of the complex diabetic vitrectomy cases.We conducted a prospective interventional comparative study on 40 eyes of 36 patients with advanced diabetic eye disease requiring PPV. The study was conducted in a single tertiary referral center. Eyes were divided on 1:1 basis by stratified randomization into two groups. Group 1 had trimanual vitrectomy done assisted with chandelier illumination, perfluorocarbon liquid (PFCL) and vital dyes. Group 2 had the conventional bimanual vitrectomy done assisted with chandelier illumination only. All patients were followed up for a minimum of 6 months after the surgery.Forty eyes of 36 patients with the mean age of 51.42 years (range 28-69) were evaluated. The anatomical success at 6 months could be achieved in all the eyes in both groups. The complete removal of the pre-retinal proliferations could be accomplished in all the eyes in the trimanual PPV group, and only in 85% of the eyes in the bimanual PPV group. Operative time was significantly shorter in the trimanual PPV group (p 0.001). More eyes in the trimanual PPV group (55.0%) could achieve better vision ( 6/60) 6 months after the operation compared to the bimanual PPV group (50.0%), but this difference was not statistically significant.Trimanual PPV is a novel, safe and effective technique that can improve the results of the complex diabetic PPV.

Published
2021

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