Image Image Image Image Image Image Image Image Image Image
Accessibilité
Haut de page

Up

Aidez-nous à arrêter les maladies visuelles dégénératives. Collaborez avec BMF

Dr Jordi Monés, MD, PhDDirecteur

L’Institut est le fruit de la passion et de la vocation de toute une équipe, dirigée par le Dr. Jordi Monés

+ Connaître toute l'équipe

Actualités + Voir plus

Foto espurnes
22/06/2017.
Disfruta de la verbena. Protégete los ojos

Formamos parte de una cultura milenaria que año tras...

Actualités

Foto: Jordi Play - FCB
13/06/2017.
Jordi Monés explains his views on smoking to the Catalan Parliament

The Director of the Institut de la Màcula, Dr. Jordi Monés, appeared...

Actualités

20170526 Begisare v2
05/06/2017.
The Institut de la Màcula welcomes Begisare

The Institut de la Màcula last month received a visit from the Presid...

Actualités

Jordi Monés
01/06/2017.
“We form part of a knowledge hub, connected to the world’s leading institutions”

JORDI MONÉS REVIEWS THE FIRST 10 YEARS OF THE INSTITUT DE LA MÀCULA...

Actualités

Blog

Recherche + Voir plus

Fig 01 ooze
24/04/2017.Drusen Ooze: A Novel Hypothesis in Geographic Atrophy

Monés J, Garcia M, Biarnés M, Lakkaraju A, & Ferraro L. (2017). Drusen Ooze: A Novel Hypothesis in Geographic Atrophy. Ophthalmology Retina.

http://www.ophthalmologyretina.org/article/S2468-6530(16)30172-5/fulltext

Purpose

To describe a subgroup of subjects with soft drusen associated with geographic atrophy (GA) and novel spectral-domain OCT (SD-OCT) findings consistent with presumed drusen leakage. We also propose a mechanism leading to GA progression in these patients.

Design

A retrospective, observational cohort study.

Participants

Forty-eight eyes of 33 patients with soft drusen secondary to age-related macular degeneration (AMD).

Methods

Drusen were evaluated with SD-OCT and retinal imaging to characterize the development of atrophy-associated drusen regression (drusen collapse) over a follow-up period of ≥18 months.

Main Outcome Measures

The presence of isoreflective dots at the outer retinal layers associated with retinal pigment epithelium (RPE) defects. Percentages of previously reported hyperreflective RPE, and hyperreflective dots (HRDs) were also determined.

Results

Nineteen of 48 eyes (39.6%) showed a collapse of ≥1 druse during the follow-up period. Thirty-four foci of collapsed drusen were found to be associated with either isoreflective dots associated with RPE defects (32.4%), hyperreflectivity of the RPE (91.2%), or HRDs (79.4%). A post hoc showed the adjusted odds ratio of drusen collapse for isoreflective dots (65.8), for HRDs (6.0) or both (12.1).

Conclusions

In soft drusen progressing to subsequent atrophy, approximately 33% were associated with isoreflective dots and RPE defects. In addition, overlying hyperreflectivity of the RPE and HRDs were noted with high frequency. Presence of isoreflective dots, with or without HRDs, was associated with a strong risk of developing atrophy compared with drusen without these findings. We hypothesize that these isoreflective dots associated with RPE defects may be debris extruded from the soft drusen into the subretinal space, which we have termed “drusen ooze”. Drusen ooze may activate the RPE apical surfaces, leading to a marked increase in phagocytosis/endocytosis of extracellular debris that eventually overwhelms the RPE capacity, and leads to RPE death, subsequent release of intracellular RPE material and thereby propagate a cycle of cellular death resulting in GA development and progression. Therapeutic targeting of drusen material, prior to its extrusion into the subretinal space and prior to irreversible damage to the RPE, might prevent or delay onset and progression of GA.

 

 

...

Publication

m_iovs_57_10.coverfig
30/08/2016.A Swine Model of Selective Geographic Atrophy of Outer Retinal Layers Mimicking Atrophic AMD: A Phase I Escalating Dose of Subretinal Sodium Iodate

Monés J, Leiva M, Peña T, Martínez G, Biarnés M, Garcia M, Serrano A, Fernandez E. Investigative Ophthalmology & Visual Science. 2016 Aug 1;57(10):3974-83. doi: 10.1167/iovs.16-19355.

...

Publication

neovascularització coroidal
06/04/2016.
Feeder vessel laser photocoagulation for idiopathic, subfoveal polypoidal choroidal vasculopaty not responding to eithelial growth factor therapy or photodynamic therapy

Dr. Jordi Monés, Dr. Josep Badal, Dr. Marc Biarnés. FEEDER VESSEL LASER PHOTOCOAGULATION FOR IDIOPATHIC, SUBFOVEAL POLYPOIDAL CHOROIDAL VASCULOPATHY NOT RESPONDING TO EITHER ANTI-VASCULAR ENDOTHELIAL GROWTH FACTOR THERAPY OR PHOTODYNAMIC THERAPY. Retin Cases Brief Rep. 2016 Winter;10(1):100-3. doi: 10.1097/ICB.0000000000000174.

http://www.ncbi.nlm.nih.gov/pubmed/26200385

PURPOSE:

To describe the management of a subfoveal polypoidal choroidal vasculopathy case refractory to antiangiogenic treatment and to photodynamic therapy.

METHODS:

Case report. A 65-year-old male patient presented with a diagnosis of exudative age-related macular degeneration of his left eye and unsuccessful response to eight antiangiogenic injections. Visual acuity was 20/33. Fluorescein angiography, spectral domain optical coherence tomography, and indocyanine green angiography confirmed the diagnosis of polypoidal choroidal vasculopathy. Two photodynamic therapy sessions along with two ranibizumab injections were performed, but no response was obtained. Identification and photocoagulation of the polyp feeder vessels was performed.

RESULTS

Polypoidal structures regressed, intraretinal and subretinal exudation resolved, and visual acuity was preserved with no adverse events.

CONCLUSION

Indocyanine green angiography-guided feeder vessel diode laser photocoagulation in selected cases of polypoidal choroidal vasculopathy may be considered an effective alternative therapy, especially in those refractory to both photodynamic therapy and antiangiogenic therapy.

...

Publication

Direct Visualization of a New Choroidal Vessel...
06/04/2016.
Direct Visualization of a New Choroidal Vessel on Spectral-Domain Optical Coherence Tomography

Marc Biarnés, PhD; Jordi Monés, MD, PhD. Direct Visualization of a New Choroidal Vessel on Spectral-Domain Optical Coherence Tomography. Ophthalmic Images | March 10, 2016. JAMA Ophthalmol. 2016;134(3):e155017. doi:10.1001/jamaophthalmol.2015.5017.

http://archopht.jamanetwork.com/article.aspx?articleid=2500097

This Ophthalmic Image shows a new choroidal vessel on spectral-domain optical coherence tomography in a man in his 60s.

Spectral-domain optical coherence tomography detects choroidal neovascularization by its indirect effects on the retina.1 However, actual subretinal pigment epithelium (RPE) (type 1) or subretinal (type 2)2 new vessels often are not noted.

...

Publication

Patients internationaux

Vous ne résidez pas à Barcelone et souhaitez vous faire soigner à l'Institut de la Màcula ? Cliquez ici . Vous trouverez toutes les informations dont vous avez besoin.

Chaîne de l'Institut Suivez-nous sur YouTube

Last modified 22 June, 2017 - 9:15