Hassan AL-Dhibi

Prof. Hassan AL-Dhibi

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Research Focus & Metrics

Academic Career Length

20Years (2007-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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3 June 2020 in PLOS ONE
Verified
Journal Article
Open access
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PMPaul Mitchell
Paul Mitchell
TSTom G. Sheidow
Tom G. Sheidow
MFMichel E. Farah
Michel E. Farah
SMSajjad Mahmood
Sajjad Mahmood
AMAngelo M. Minnella
Angelo M. Minnella
OIon behalf of the LUMINOUS study investigators
on behalf of the LUMINOUS study investigators
To assess the one-year effectiveness and safety of ranibizumab 0.5 mg in treatment- naïve patients with diabetic macular edema (DME) enrolled in the real-world LUMINOUS study. A 5-year, prospective, observational, open-label, global study which recruited 30,138 patients across all approved indications. Consenting patients (≥18 years) who were treatment-naïve or previously treated with ranibizumab or other ocular treatments were treated as per the local ranibizumab label. Here, we present the change in visual acuity (VA) (Early Treatment Diabetic Retinopathy Study letter score; primary treated eye) at Year 1, as well as the change in VA based on injection frequencies (≤4 and ≥5), treatment exposure, and the overall adverse events (AEs) and serious AEs (SAEs) in treatment-naïve DME patients. Of the 4,710 DME patients enrolled in the study, 1,063 were treatment-naïve. At baseline, mean age was 64.5 years, 54.7% were male, and 69.2% were white. At 1 year, mean VA letter score improved by +3.5 (n = 502) from a baseline of 57.7 with a mean of 4.5 injections. Presented by injection frequencies ≤4 and ≥5, VA letter score gains were 0.5 (n = 264) and 6.9 (n = 238) from baseline letter scores of 56.6 and 59.0, respectively. Over 5 years, the incidence of ocular/non-ocular AEs and SAEs was 7.2%/10.1% and 0.3%/5.8%, respectively. No endophthalmitis cases were reported. The LUMINOUS study included patients with DME with more diverse baseline characteristics than those in randomized clinical trials. The 1-year data showed improvement in VA with low number of injections in treatment- naïve patients with DME. Greater VA gains were observed in patients who received ≥5 injections. No new safety findings were identified. LUMINOUS confirms the effectiveness and safety of ranibizumab for the treatment of patients with DME in a real-world clinical practice.

24 February 2016 in Ocular Immunology and Inflammation
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Journal Article
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HAHassan AL-Dhibi
Hassan AL-Dhibi
HSHanan N. Al Shamsi
Hanan N. Al Shamsi
AAAmmar M. Al-Mahmood
Ammar M. Al-Mahmood
HTHassan M. Al Taweel
Hassan M. Al Taweel
MSMohammed A. Al Shamrani
Mohammed A. Al Shamrani
TGThe KKESH Uveitis Survey Study Group
The KKESH Uveitis Survey Study Group
Purpose: To present the pattern, causes and complications of uveitis in one of the tertiary eye centers in Saudi Arabia. Methods: In this retrospective study, clinical records of randomly selected cases of uveitis attending the King Khaled Eye Specialist Hospital, Saudi Arabia, from 2001 to 2010, were reviewed. Results: Our series included 888 out of 1286 cases of uveitis. Among them, there were 390 men (43.9%) with a mean age of 39.6 ± 11 (range: 6–94 years). The prevalence of uveitis among all eye patients was 1.5% and the annual incidence was 129 cases. Uveitis was bilateral in 567 patients (63.8%), mainly anterior in 27.3%, intermediate in 12.7%, posterior in 7.1%, while 52.9% were panuveitis. Infective etiology was seen in 180 patients (20.3%), of which presumed tuberculous uveitis (PTU) was the commonest cause in 94 patients (52%), followed by herpetic in 46 (26%) and toxoplasmosis in 29 (16%). Vogt–Koyanagi–Harada (VKH) 22%, Behçet uveitis (BU) 14.6%, idiopathic anterior uveitis 12.5%, presumed tuberculous uveitis (PTU) 10.6%, and idiopathic intermediate uveitis (10.1%) accounted for the majority of cases, whereas other diagnostic entities accounted for 30%. The most common cause of anterior uveitis was idiopathic uveitis (101; 41.7%), followed by herpetic (46; 19%). Toxoplasmosis was the most frequent cause of posterior uveitis (29; 46.3%). Intermediate uveitis was most commonly idiopathic (86; 76.1%). VKH disease was the most common cause of panuveitis (195; 41.5%), followed by Behçet disease (118; 25.1%). The common complications of uveitis were glaucoma (34.1%), posterior synechiae (22.3%) and cataract (15.1%). Conclusions: The most common anatomic diagnosis was panuveitis. VKH disease and Behçet disease were the most frequent causes and glaucoma was the most common complication of uveitis.

1 January 2013 in World Journal of Diabetes
Verified
Journal Article
Closed access
HAHassan AL-Dhibi
Hassan AL-Dhibi
Diabetic macular edema (DME) is a common cause of visual impairment in diabetic patients. It is caused by an increase in the permeability of the perifoveal capillaries and a disruption of the blood retinal-barrier. The pathogenesis of DME is multifactorial. Several therapeutic modalities have been proposed for the treatment of DME. Corticosteroid treatments have emerged as an alternative therapy for persistent DME or refractory to conventional laser photocoagulation and other modalities, due to anti-inflammatory, anti-vascular endothelial growth factor and anti-proliferative effects. Many studies have demonstrated the beneficial therapeutic effect of corticosteroids with improvement to both retinal thickness and visual acuity in short-term on the treatment of DME. Peribulbar and intravitreal injections have been used to deliver steroids for DME with frequent injections due to the chronic and recurrent nature of the disease. Steroid-related side effects include elevated intraocular pressure, cataract, and injection related complications such as endophthalmitis, vitreous hemorrhage, and retinal detachment particularly with intravitreal steroid injections. In order to reduce the risks, complications and frequent dosing of intravitreal steroids, intravitreal implants have been developed recently to provide sustained release of corticosteroids and reduce repeated intravitreal injections for the management of DME.

27 October 2021 in International Journal of Retina and Vitreous
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Journal Article
Open access
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JAJ. Fernando Arevalo
J. Fernando Arevalo
SRSaba Al Rashaed
Saba Al Rashaed
TATariq A. Alhamad
Tariq A. Alhamad
EKEman Al Kahtani
Eman Al Kahtani
HAHassan AL-Dhibi
Hassan AL-Dhibi
Background: To describe the outcomes of patients with retinitis pigmentosa (RP) who received the Argus II Retinal Prosthesis System. Methods: This retrospective, interventional case series evaluated 10 consecutive patients who received the Argus II retinal implant and underwent visual function tests with the system on and system off. The main outcome measures were safety (the number, seriousness, and relatedness of adverse events), and visual function measured by computer-based objective tests, including square localization (SL) and direction of motion (DOM). Secondary measures included functional vision performance, including orientation and mobility (O&M) tasks. Results: There were no intraoperative complications and all prostheses remained implanted at the end of follow up. The mean patient age was 41.3 years; mean duration of the implant in vivo was 2.1 years. One patient had a suture exposure over the coil suture tab and over the inferior case suture tab at 2 years postoperatively, which was managed successfully. One patient developed mild vitreous hemorrhage that resolved spontaneously. One patient developed high intraocular pressure postoperatively due to a tight scleral band (SB) that was managed successfully. Patients performed significantly better with the Argus II system on than off on all tasks. Conclusion: Patients who received the Argus II had a safety profile out to 4 years post-implantation that was markedly better than that observed in the pre-approval phase of the Argus II. In this population of RP patients, the Argus II retinal prosthesis provided useful visual function over several years that likely translates into improved quality of life. Trial Registration: clinicaltrials.gov identifier, NCT00407602.

1 May 2020 in Ophthalmology Retina
Verified
Journal Article
Closed access
SASulaiman M. Alsulaiman
Sulaiman M. Alsulaiman
AAAbdulelah A. Al-Abdullah
Abdulelah A. Al-Abdullah
AAAdel Alakeely
Adel Alakeely
HAHassan AL-Dhibi
Hassan AL-Dhibi
LELeonore Engelbrecht
Leonore Engelbrecht
MMMarco Mura
Marco Mura

1 January 2014 in Middle East African Journal of Ophthalmology
Verified
Journal Article
Open access
PDF file
HAHassan AL-Dhibi
Hassan AL-Dhibi
AAAmmarM. Al-Mahmood
AmmarM. Al-Mahmood
JAJ.FErnando Arevalo
J.FErnando Arevalo
Uveitis is a common cause of preventable blindness although it is consider a sight-threatening condition particularly in cases with posterior segment inflammation. To deal with emergency conditions in uveitis, we must aware of the essential signs and symptoms that reflect a true uveitic emergency. Failure to recognize these essential signs and symptoms of a true uveitic emergency may result in a devastating visual outcome. This review provides general ophthalmologists and residents, clinical guidelines for the main uveitic entities that require immediate recognition and urgent intervention in the emergency room to prevent severe permanent visual loss.