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Multifocal electroretinogram and en‐face OCT in patients who underwent retinal detachment surgery
Author(s) -
Ricouard F.,
Bigan G.,
Tumahai P.,
Flores M.,
Castelbou M.,
Delbosc B.,
Saleh M.
Publication year - 2015
Publication title -
acta ophthalmologica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.534
H-Index - 87
eISSN - 1755-3768
pISSN - 1755-375X
DOI - 10.1111/j.1755-3768.2015.0624
Subject(s) - ophthalmology , erg , electroretinography , medicine , retinal , reflectivity , visual acuity , optics , physics
Purpose To study the anatomical and functional recovery after retinal detachment surgery ( RD ) by studying the reflectivity of the ellipsoid band ( IS e) measured in en‐face OCT and multifocal electroretinography (M‐ ERG ) and investigate the factors involved in the results. Methods Prospective study of 39 patients operated successfully of RD and examined at baseline and at 3 (M3) and 6 months (M6). SD ‐ OCT and M‐ ERG were performed at each visit. A coronal view of the ganglion cell layer ( GCL ) and the cone inner segment ellipsoid ( IS e) band were reconstructed on en‐face OCT . The mean reflectivity in the 2 central degrees was calculated using image J and expressed as a gray level ranging from 0 (black) to 256 (white). Results M‐ ERG waves amplitudes were reduced in RD involving the macula (p < 0.05). Best corrected visual acuity ( BCVA ) was correlated to the M‐ ERG amplitudes at 6 months (p < 0.01). CGL and IS e reflectivity were lower in the group with macular involvement (p < 0.05). IS e reflectivity was correlated with the BCVA at M3 and M6 (p < 0.001). IS e reflectivity was also related to the duration of the macular detachment (p = 0.01). However, we did not observe any correlation between GCL reflectivity and BCVA . While, the GCL reflectivity was correlated with the RMS amplitudes (p = 0.03), there was no correlation between M‐ ERG amplitudes and IS e reflectivity. Conclusions M‐ ERG represents a valuable tool in the assessment of visual function after RD . En‐face OCT brings new insight on the integrity of the retinal structures after surgery, and shows that both inner and outer retinal layers are impaired after RD reattachment.