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JOURNAL ARTICLE
RANDOMIZED CONTROLLED TRIAL
The Effect of Treatment of Idiopathic Intracranial Hypertension on Prevalence of Retinal and Choroidal Folds.
American Journal of Ophthalmology 2017 April
PURPOSE: We described 3 types of folds in the retina and a crease in the outer retina associated with papilledema owing to idiopathic intracranial hypertension (IIH) at presentation. We report the change in folds relative to treatment of IIH over the 6 months.
METHODS: In this substudy of a randomized clinical trial, study eyes of subjects assigned to acetazolamide (ACZ, n = 44) or placebo (PLB, n = 43) had spectral-domain optical coherence tomography (SDOCT) images of the optic disc and macula regions at baseline and at 3 and 6 months. Images were evaluated for peripapillary wrinkles (PPW), retinal folds (RF), choroidal folds (CF), and creases using transaxial and en face views. The optic nerve head (ONH) shape, retinal nerve fiber layer (RNFL) thickness, ONH volume, and papilledema grade were measured. Outcome was determination of the presence or absence of PPW, RF, CF, and creases.
RESULTS: At presentation, except for an increase of PPW in ACZ eyes (64% vs 28%), both treatment groups were matched for all OCT features. At 6 months, ACZ-treated, but not PLB-treated, eyes had fewer folds of all types (P < .01), with a 57% reduction in frequency of RF. Creases did not resolve. Resolution of RF, but not of PPW and CF, was associated with significant reduction in RNFL thickness, ONH volume, and papilledema grade.
CONCLUSIONS: The various types of retinal folds associated with papilledema reflect biodynamic processes and show an ACZ treatment effect. Persistence of these folds despite marked improvement in ONH swelling suggests permanent changes in the affected retinal tissues.
METHODS: In this substudy of a randomized clinical trial, study eyes of subjects assigned to acetazolamide (ACZ, n = 44) or placebo (PLB, n = 43) had spectral-domain optical coherence tomography (SDOCT) images of the optic disc and macula regions at baseline and at 3 and 6 months. Images were evaluated for peripapillary wrinkles (PPW), retinal folds (RF), choroidal folds (CF), and creases using transaxial and en face views. The optic nerve head (ONH) shape, retinal nerve fiber layer (RNFL) thickness, ONH volume, and papilledema grade were measured. Outcome was determination of the presence or absence of PPW, RF, CF, and creases.
RESULTS: At presentation, except for an increase of PPW in ACZ eyes (64% vs 28%), both treatment groups were matched for all OCT features. At 6 months, ACZ-treated, but not PLB-treated, eyes had fewer folds of all types (P < .01), with a 57% reduction in frequency of RF. Creases did not resolve. Resolution of RF, but not of PPW and CF, was associated with significant reduction in RNFL thickness, ONH volume, and papilledema grade.
CONCLUSIONS: The various types of retinal folds associated with papilledema reflect biodynamic processes and show an ACZ treatment effect. Persistence of these folds despite marked improvement in ONH swelling suggests permanent changes in the affected retinal tissues.
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