Valmore A Semidey

Dr. Valmore A Semidey

orcid

Research Focus & Metrics

Academic Career Length

7Years (2020-Present)

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

Representative Publications

View All Publications
25 October 2021 in Case Reports in Ophthalmology
Verified
Journal Article
Open access
PDF file
RARaid Alhayaza
Raid Alhayaza
SKSaud A. Khan
Saud A. Khan
VSValmore A Semidey
Valmore A Semidey
OOOhoud Owaidhah
Ohoud Owaidhah
Sturge-Weber syndrome (SWS) is a congenital neurological disorder that is characterized by hamartomas involving the skin, brain, and eyes and marked by the presence of the facial port-wine stain, which consequently leads to various ocular complications. Among all ocular comorbidities, glaucoma is the most frequently witnessed in SWS patients with a prevalence of 30%–70%. If glaucoma is refractory to conventional medical management, surgical intervention can be considered. Common complications of glaucoma procedures in SWS are choroidal detachment and suprachoroidal hemorrhage. Moreover, we report a 6-year-old girl, known case of unilateral congenital glaucoma secondary to SWS. Despite being on maximal antiglaucoma drops and undergoing multiple surgical interventions, the patient had uncontrolled intraocular pressure of her right eye. A decision to proceed with Ahmed glaucoma valve implantation (AGVI) to the right eye was made. In the immediate postoperative period, the patient developed hemorrhagic choroidal detachment and exudative retinal detachment. A trial of oral propranolol (1.5–2 mg/kg/day) was then initiated for 4 months. After 30 days from oral propranolol course initiation, we started noticing a significant improvement of the hemorrhagic choroidal and exudative retinal detachment. Spontaneously, a marked reduction in subretinal fluid and suprachoroidal hemorrhage was also seen. Thus, the improvement was correlated with the propranolol therapy. Here, we report a significant improvement of the postoperative complications of AGVI in a patient with SWS, following 4 months of oral propranolol course (1.5–2 mg/kg/day). Further studies are needed to determine the dosage, duration, and optimal mechanism by which propranolol works in this situation.

1 January 2021 in Clinical Ophthalmology
Verified
Journal Article
Open access
PDF file
BABudoor Albabtain
Budoor Albabtain
MMMarco Mura
Marco Mura
PSPatrik Schatz
Patrik Schatz
SASulaiman M Alsulaiman
Sulaiman M Alsulaiman
WAWael A Alsakran
Wael A Alsakran
VSValmore A Semidey
Valmore A Semidey
Purpose: To compare the specificity of diagnosing posterior vitreous detachment (PVD) using preoperative optical coherence tomography (OCT) versus intraoperative triamcinolone acetonide (TA) staining in patients undergoing vitrectomy. Patients and Methods: This retrospective cohort study included patients undergoing pars plana vitrectomy for diverse retinal pathologies. Intraoperatively, surgeons evaluated the posterior hyaloid status with TA staining and compared it with preoperative OCT findings. Results: One hundred six patients underwent intraoperative assessments of posterior hyaloid status, with 72% (76/106) of the eyes showing positive staining. Sixty-two patients had also undergone preoperative OCT. Of the patients diagnosed with PVD on preoperative OCT, 50% (15/30) showed positive TA staining intraoperatively. The sensitivity of preoperative OCT assessment was 83.3%, and its specificity was 65.9%. Conclusion: Preoperative OCT imaging is associated with lower sensitivity and specificity for diagnosing PVD when compared to intraoperative TA staining.

10 November 2021 in American Journal of Ophthalmology Case Reports
Verified
Journal Article
Open access
AAAbdulaziz Al-Shehri
Abdulaziz Al-Shehri
SASaud Aljohani
Saud Aljohani
VSValmore A Semidey
Valmore A Semidey
To report a case of bilateral endogenous endophthalmitis, caused by the Trichoderma species, in a severely immunocompromised patient. A 39-year-old man with acute myeloid leukemia, in a relapsed state on high-dose chemotherapy, experienced profound neutropenia and immunosuppression. The patient reported two weeks of severe bilateral vision loss. The diagnosis of bilateral endogenous endophthalmitis was initially established based on the patient's history, immune status, clinical findings, and confirmed positive vitreous culture. The patient was initially managed with vitreous tap, pars plana vitrectomy with silicone oil injection in the left eye, and vitreous tap and antibiotic injection of the right eye. Eventually, the right eye underwent pars plana vitrectomy as well. Cultures of the vitreous sample grew a filamentous fungus, identified as the Trichoderma species. His blood and urine culture tested negative. The patient was kept on systemic amphotericin B over 52 weeks, and his condition improved dramatically. Three months post phacoemulsification and silicone oil removal, best-corrected visual acuity values were 20/50 in both eyes. This is the first reported case of bilateral endogenous endophthalmitis, caused by the Trichoderma species, in an immunocompromised patient. Early recognition and intervention were associated with good functional and anatomical outcomes.

1 September 2020 in American Journal of Ophthalmology Case Reports
Verified
Journal Article
Open access
MMMarco Mura
Marco Mura
LELeonore Engelbrecht
Leonore Engelbrecht
MSMarc D. de Smet
Marc D. de Smet
PSPatrik Schatz
Patrik Schatz
DIDanilo Iannetta
Danilo Iannetta
JAJ. Fernando Arevalo
J. Fernando Arevalo
This study evaluates a new surgical technique consisting of minimal vitreous removal under air (minimal interface vitrectomy; MIV) to reduce postoperative complications while preserving the ability to address surgical factors at the retinal break. This retrospective analysis examined the outcomes of minimal interface vitrectomies in consecutive cases, with a minimum 12-month follow-up period, of primary rhegmatogenous retinal detachment (RRD), recurrent RRD after pars plana vitrectomy (PPV), or failed surgery after primary scleral buckling surgery (SBS). Twelve eyes of 12 patients with RRD underwent MIV. The total surgical duration was 190-300 s (mean, 245.25 s). Eight (66.7%) eyes were treated with cryotherapy, and 4 (33.3%) with endolaser to seal the retinal break. Successful, complete retinal reattachment was achieved in all eyes and maintained during follow-up. No intra- or postoperative complications occurred and no patients developed inflammation or cataract during follow-up. We effectively removed traction and subretinal fluid and treated breaks with endolaser or cryotherapy by using a novel minimal interface vitrectomy technique in this selected population.

1 January 2021 in Middle East African Journal of Ophthalmology
Verified
Journal Article
Open access
PDF file
BABedoor AlBloushi
Bedoor AlBloushi
MMMarco Mura
Marco Mura
RKRajiv Khandekar
Rajiv Khandekar
SASaleh AlMesfer
Saleh AlMesfer
AAAbdulmalik AlYahya
Abdulmalik AlYahya
VSValmore A Semidey
Valmore A Semidey
PURPOSE: To determine the incidence of endophthalmitis after pars plana vitrectomy (PPV), organisms' profile, and management outcomes at a tertiary eye hospital in a Middle East country. METHODS: In this single-arm cohort study conducted in 2020, medical records of patients who underwent PPV not accompanied by any other intraocular surgery were reviewed; those with a diagnosis of acute endophthalmitis in the immediate postoperative period (within 6 weeks) during the past 6 years were analyzed. RESULTS: A total of 8153 records of PPV surgeries were reviewed. Five cases had endophthalmitis post-PPV with an incidence of 0.061%. Three (0.037%) had positive cultures, all of them for Staphylococcus epidermidis. The interval between PPV and diagnosis of endophthalmitis ranged from 3 to 25 days (mean, 15.8 days). Final vision after treatment ranged from 20/400 to no light perception, and one eye was eviscerated. CONCLUSION: The incidence of endophthalmitis post PPV is low. Despite prompt diagnosis and standard management, visual prognosis seems to be poor. The infective agents for endophthalmitis were commensals from the ocular surface.

5 February 2022 in American Journal of Ophthalmology Case Reports
Verified
Journal Article
Open access
AAAhmed Algethami
Ahmed Algethami
SSSilvana Artioli Schellini
Silvana Artioli Schellini
SESahar M. Elkhamary
Sahar M. Elkhamary
MTMohammad A. Talea
Mohammad A. Talea
VSValmore A Semidey
Valmore A Semidey
To report a very rare case of silicone oil (SO) migration and emphysema development in the orbit and periorbital tissue, including the lids and subconjunctival space, after a fourth pars plana vitrectomy (PPV) for retinal detachment (RD) treatment. A 53-year-old woman with a recurrent rhegmatogenous RD in the right eye underwent a fourth PPV under local anesthesia and 23-gauge vitrectomy with fluid-air exchange and SO injection. Localized choroidal detachment occurred during fluid–air exchange near the end of the surgery. High-pressure infusion of air was used as a temporary control measure prior to SO injection. In the early postoperative period, the patient developed hemifacial and periorbital swelling and the air trapped in the upper lid was associated with lid ptosis and conjunctival chemosis. The emphysema resolved with clinical management, and the mechanical ptosis subsided after partial SO removal from the lid. The SO migration and emphysema in our case were presumably related to the multiple previous sclerotomies. Periorbital emphysema can show spontaneous resolution, but the migrated SO requires surgical management.