Posters

OCT-Angiography in geographic atrophy (GA)

Poster Details

First Author: G.Garay-Aramburu SPAIN

Co Author(s):    D. Rodriguez-Feijoo   E. Diaz de Durana Santacoloma   H. Gonzalez-Valdivia   A. Larrauri-Arana                    

Abstract Details

Purpose:

To evaluate the optical coherence tomography angiography (OCT-A) appearance of the superficial, deep capillary plexa and choriocapillaris in eyes affected by geographic atrophy due to age-related macular degeneration (AMD).

Setting:

Araba University Hospital. Ophthalmology Deparment. Vitoria-Gasteiz. Spain

Methods:

Optical coherence tomography angiography data were acquired using a HRA-2 (Heidelberg Engineering, Dossenheim, Germany). Autofluorescence and Multicolour images were performed on the same day.

Results:

Abnormalities of the choriocapillaris can be observed in eyes with atrophic AMD: - a loss of choriocapillaris in the bed of atrophy - a relative reduction of choriocapillaris density - flow inside the GA is impaired. Limitations include bad image quality due to this patient´s poor fixation ability, motion and projection artifact and inability to visualize slow flow lesions

Conclusions:

OCT-A is a non-invasive imaging modality that allows the characterization and quantification of the microvasculature in non-neovascular AMD despite the current limitations.