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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 Invest+Ophthalmol+Vis+Sci
2015 ; 56
(5
): 3415-26
Nephropedia Template TP
gab.com Text
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English Wikipedia
Localization of damage in progressive hydroxychloroquine retinopathy on and off
the drug: inner versus outer retina, parafovea versus peripheral fovea
#MMPMID26024126
de Sisternes L
; Hu J
; Rubin DL
; Marmor MF
Invest Ophthalmol Vis Sci
2015[May]; 56
(5
): 3415-26
PMID26024126
show ga
PURPOSE: To evaluate the relative involvement of inner and outer retina in
hydroxychloroquine (HCQ) retinopathy while on the drug, and after drug cessation,
using data from spectral-domain optical coherence tomography (SD-OCT). METHODS: A
total of 102 SD-OCT scans were obtained from 11 patients (classified as having
early, moderate, or severe stages of toxicity) over a period of 4 years after
cessation of HCQ. The inner and outer retina boundaries were identified
automatically to measure thickness and characterize progression topographically.
RESULTS: The segmentation of retinal layers was verified in SD-OCT cross-sections
for all eyes and scans included in this study (a total of 102 scans). Topographic
analysis showed that inner retina was not involved in HCQ toxicity to any
meaningful degree, either between stages of retinopathy or after the drug is
stopped. The characteristic bull's eye pattern of outer macula thinning appears
when comparing moderate retinopathy (before any RPE damage) to the early stage.
Later damage, as toxicity evolved to a severe stage, was diffuse across most of
the macula. If the drug was stopped at an early or moderate stage, progression
was limited to the first year and occurred diffusely without parafoveal
localization. CONCLUSIONS: Hydroxychloroquine retinopathy primarily involves
outer retina (photoreceptors). Outer retinal thinning while using HCQ initially
involves the parafovea, but becomes diffuse across the macula as damage
progresses or after drug cessation. When HCQ is stopped at an early or moderate
stage (before RPE damage), progression seems to be limited to the first year.