Ioannis Papasavvas

Dr. Ioannis Papasavvas

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
5 July 2021 in Journal of Ophthalmic Inflammation and Infection
Verified
Journal Article
Open access
PDF file
IPIoannis Papasavvas
Ioannis Papasavvas
CJCarl P. Herbort Jr
Carl P. Herbort Jr
Background/purpose: Vogt-Koyanagi-Harada (VKH) disease is a primary stromal choroiditis with bilateral granulomatous panuveitis. If initial-onset VKH is treated early and relentlessly the disease can be controlled and even “cured” in a substantial number of cases. We are reporting on a patient treated early and in a sustained fashion who was inflammation free for seven years but who presented a reactivation 6 weeks after the second dose of anti-SARS-CoV-2 vaccination. Case report: A 43-year-old woman presented with severe initial-onset VKH disease which was brought under control using steroidal and non-steroidal Immunosuppression (mycophenolic acid and cyclosporine) with additional infliximab infusions because of the persistence of subclinical choroiditis identified on ICGA. Under infliximab alone disease had been inflammation free with no subclinical disease and absence of sunset glow fundus for 6 years. However, following anti-SARS-CoV-2 vaccination, severe resurgence of the disease occurred with exudative retinal detachments. Disease was rapidly brought again under control with oral prednisone (1 mg/kg) therapy and a new loading scheme of infliximab therapy. Conclusion: VKH disease results from an autoimmune process directed against melanocyte associated antigens which can be controlled when early and sustained immunosuppressive treatment is introduced. It seems that anti-SARS-CoV-2 vaccination can be at the origin of reactivation of long-time controlled disease.

18 December 2021 in Journal of Ophthalmic Inflammation and Infection
Verified
Journal Article
Open access
PDF file
IPIoannis Papasavvas
Ioannis Papasavvas
AMAlessandro Mantovani
Alessandro Mantovani
ITIlknur Tugal-Tutkun
Ilknur Tugal-Tutkun
CJCarl P. Herbort Jr
Carl P. Herbort Jr
Background: Multiple evanescent white dot syndrome (MEWDS) is a rare inflammatory eye condition affecting the outer retina as a consequence of choriocapillaris non perfusion. The pathophysiology of MEWDS will be discussed based clinical appraisal and on multimodal imaging appraisal. Methods: Narrative review and perspective opinion. Results: Literature review results helped us to put forward (1) the specific symptomatology (decreased/blurred vision, photopsia, subjective scotomas), (2) the ill-asserted character of clinical findings (foveal granularity, white dots in fundoscopy), (3) and the crucial importance of multimodal imaging with the diagnostic triad of ICGA hypofluorescent areas, BL-FAF hyperautofluorescent areas and loss/damage of IS/OS-ellipsoid zone on SD-OCT that characterise the disease and can practically help the clinician to diagnose MEWDS. A comprehensive alternative perspective of the disease was formulated. Conclusions: The bulk of evidence that we are presenting in this review, thanks to new performing non-invasive and invasive imaging modalities, is sufficiently compelling to consider MEWDS as a primary choriocapillaritis/inflammatory choriocapillaropathy. Multimodal imaging allows the clinician to diagnose MEWDS with a high level of certainty and ensures a precise follow-up.

24 May 2021 in Diagnostics
Verified
Journal Article
Open access
PDF file
CJCarl P. Herbort Jr
Carl P. Herbort Jr
AMAlessandro Mantovani
Alessandro Mantovani
ITIlknur Tugal-Tutkun
Ilknur Tugal-Tutkun
IPIoannis Papasavvas
Ioannis Papasavvas
The choroid was poorly accessible to imaging investigation until the last decade of the last century. With the availability of more precise imaging methods such as indocyanine green angiography (ICGA) and, later, optical coherence tomography (OCT), enhanced depth OCT (EDI-OCT), and OCT angiography (OCTA), appraisal of choroidal inflammation has substantially gained in accuracy. This allowed to precisely determine which structures were touched in the different non-infectious choroiditis entities and made it possible to classify this group of diseases, ICGA signs, mainly hypofluorescent lesions, were identified and described. Previous publications have divided angiographic findings into two main sets of signs: (1) irregular “geographic” hypofluorescent areas corresponding to choriocapillaris non-perfusion and (2) round more regular, hypofluorescent dark dots more evenly distributed in the fundus corresponding to more deep choroidal stromal foci. These distinct findings allowed to subdivide and classify choroiditis into choriocapillaritis and stromal choroiditis. Additional signs were identified from EDI-OCT and OCTA examination supporting the classification of choroiditis into choriocapillaritis and stromal choroiditis. Results: Diseases involving principally the choriocapillaris included Multiple Evanescent White Dot Syndrome (MEWDS), Acute Posterior Multifocal Placoid Pigment Epitheliopathy (APMPPE), Idiopathic Multifocal Choroiditis (MFC), and Serpiginous Choroiditis (SC) as well as mixed forms. Diseases primarily involving the choroidal stroma included HLA-A29 Birdshot Retinochoroiditis (BRC), Vogt-Koyanagi-Harada disease (VKH), Sympathetic Ophthalmia (SO), and Sarcoidosis chorioretinitis (SARC). Thanks to new imaging investigations of the choroid, it is now possible to classify and understand the diverse clinicopathological mechanisms in the group of non-infectious choroiditis entities.

16 September 2021 in Journal of Ophthalmic Inflammation and Infection
Verified
Journal Article
Open access
PDF file
IPIoannis Papasavvas
Ioannis Papasavvas
CCChristian de Courten
Christian de Courten
CJCarl P. Herbort Jr
Carl P. Herbort Jr
Purpose: We are reporting 3 patients who presented acute zoster ophthalmicus (HZO), an activation of varicella-zoster virus, after mRNA anti-SARS-CoV-2 vaccination, seen directly or referred to our center. Cases: A 73-year-old woman with history of ocular sarcoidosis presented HZO in the right V1 dermatome 16 days after a single booster dose of vaccination (Pfizer BioNTech). A 69-year-old woman presented HZO in her V1 left dermatome, occurring 10 days after her first dose of Pfizer BioNTech vaccine. A 72-year-old woman with no history of autoimmune pathology, candidate for cataract surgery, presented 13 days after the first dose of a Moderna mRNA vaccine with an eruption in the left V1 dermatome. All patients presented the VZV infection after their first dose of a mRNA type of vaccine. Treatment with Valacyclovir 1000 mg × 3/ day for 7–14 days was efficient in all cases. Conclusion: Vaccines have been reported in the past to trigger different types of side effects such as viral or flu-like symptoms. It is only logical to note many different side effects for SARS-CoV-2 vaccines as the population vaccinated is exceeding any other number in history. VZV is one of the more severe side effects that can, however, be treated. It is quite obvious that, as far as mRNA vaccines are concerned, and probably also other anti-SARS-CoV-2 vaccines, that the benefit of vaccination certainly outweighs the possible but very low risk of ocular side effects that can mostly be treated.

17 November 2021 in Journal of Ophthalmic Inflammation and Infection
Verified
Journal Article
Open access
PDF file
CHCarl P. Herbort
Carl P. Herbort
PNPiergiorgio Neri
Piergiorgio Neri
IPIoannis Papasavvas
Ioannis Papasavvas
Choroidal imaging investigation techniques were very limited until 2–3 decades ago.Fluorescein angiography (FA) was not suited for the analysis of the choroidal compartment and B-scan ultrasonography did not provide enough accuracy. It was on this background that a purely phenomenological approach was attempted to classify these choroiditis diseases by regrouping them under the vague potpourri term of “white dot syndromes”. With the availability of precise investigational modalities of choroidal inflammation or choroiditis-induced lesions, such as indocyanine green angiography (ICGA), spectral domain optical coherence tomography (SD-OCT) and enhanced depth imaging optical coherence tomography (EDI-OCT) it became possible to better classify these diseases based on clinico-pathological mechanisms rather than on purely phenomenological observation.Recently OCT-angiography has implemented the armamentarium of diagnostic techniques possibly also contributing to the classification of choroidal inflammatory diseases.Based on pioneering pragmatism, the aim of this article was to give a clear classification of non-infectious choroiditis. Thanks to new imaging investigations of the choroid, it is now possible to classify and understand the diverse clinicopathological mechanisms in the group of non-infectious choroiditis entities.

8 August 2022 in Medicina
Verified
Journal Article
Open access
PDF file
IPIoannis Papasavvas
Ioannis Papasavvas
AMAlessandro Mantovani
Alessandro Mantovani
CJCarl P. Herbort Jr
Carl P. Herbort Jr
Background and objectives: Acute posterior multifocal pigment epitheliopathy/acute multifocal ischaemic choriocapillaritis (APMPPE/AMIC) is part of the group of choriocapillaritis entities. The aim of this article was to report a series of patients with emphasis on the clinical presentation and treatment paradigms. Materials and Methods: Retrospective case series study performed in the Centre for Ophthalmic Specialised care (COS), Lausanne, Switzerland, on patients diagnosed from 2000 to 2021 with APMPPE/AMIC. Procedures performed at presentation and upon follow-up (when available) included best corrected visual acuity (BCVA), routine ocular examination, laser flare photometry (LFP) microperimetry (when available) and visual field testing. Imaging investigations included spectral domain optical coherence tomography (SD-OCT)/enhanced depth imaging OCT (EDI-OCT), OCT angiography (OCT-A) as well as fluorescein and indocyanine green angiography (FA, ICGA). The presence or not of prodromal systemic viral-like symptoms was noted. The localisation of lesions whether foveal or extrafoveal, divided the patients into 2 groups (foveal, peri-or parafoveal). Exclusion criteria were patients diagnosed with APMPPE/AMIC and a positive QuantiFERON test and/or VDRL-TPHA tests. Results: Nineteen (35 eyes) of 1664 new patients (1.14%) were diagnosed with APMPPE/AMIC and included in our study. 13 (68%) were male and 6 (32%) were female. The mean age was 33.1 ± 9.2 years. 16 (84%) patients mentioned a viral prodromal episode or other systemic symptoms, and 3 (16%) did not mention any episode before the onset of ocular symptoms. 15 (39%) out of 38 eyes had foveal localisation of the lesions, 20 (52.6%) had peri- or para-foveal localisations and 3 eyes were normal [3 unilateral cases (15%)]. Mean BCVA at presentation was 0.83 ± 0.24 for the whole group. It was 0.58 ± 0.28 for the group with foveal lesions, increasing to 0.97 ± 0.13 at last follow-up (p = 0.0028). For the group with extrafoveal lesions mean BCVA at presentation was 0.94 ± 0.18, improving to 1.18± 0.10 at last follow-up (p = 0.0039). 13 (68%) patients received prednisone treatment, of whom 2 (10%) received additionally at least one immunosuppressive agent, 4 (20%) patients received no treatment and in 2 patients the information was unavailable. All patients in the foveal lesion group received corticosteroid treatment except one who evolved to bilateral macular atrophy. Conclusions: APMPPE/AMIC is a primary choriocapillaritis. Although it is thought that the disease is self-limited, treatment is necessary in most cases, especially when lesions are located in the fovea.