Document Detail


Subfoveal choroidal blood flow and central retinal function in early glaucoma.
MedLine Citation:
PMID:  22268459     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
PURPOSE: To assess subfoveal choroidal blood flow (ChBF) in patients with early manifest glaucoma (EMG) and to compare blood flow with functional measures of central retinal integrity, standard automated perimetry (SAP) and pattern electroretinogram (PERG).
METHODS: Subfoveal ChBF was determined by confocal, real-time laser Doppler flowmetry in 24 patients with EMG [>-6 dB mean deviation (MD), age range: 29-77 years, visual acuity: 20/25-20/20] and 23 age-matched control subjects. All patients had a therapeutically (topical beta-blockers with or without prostaglandin analogues) controlled intraocular pressure (IOP < 20 mmHg). Subfoveal choroidal blood volume (ChBVol), velocity (ChBVel) and ChBF were determined as the average of three 60 second recordings. In all patients and controls, the PERG and SAP (Humphrey 30-2), following standardized protocols, were also recorded.
RESULTS:   In patients with EMG, reductions in average ChBVel and ChBF were roughly equal, respectively, by 30% and 33.4% (p < 0.01), when compared to control subjects, so that there was no significant difference in ChBVol between the two groups. Pattern electroretinogram amplitudes were reduced by 46% (p < 0.01) in patients compared to controls. No correlation was found between any of the ChBF parameters and PERG amplitude, or Humphrey 30-2 MD and pattern standard deviation.
CONCLUSION:   The results suggest a significant alteration of both ChBVel and ChBF in EMG, which does not appear to be associated with the severity of central retinal dysfunction. These findings may contribute to a better understanding of the pathophysiology of early glaucomatous damage in EMG and have implications for the treatment of this pathologic condition.
Authors:
Dario Marangoni; Benedetto Falsini; Alberto Colotto; Tommaso Salgarello; Gianmario Anselmi; Antonello Fadda; Antonio Di Renzo; Emilio C Campos; Charles E Riva
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-01-23
Journal Detail:
Title:  Acta ophthalmologica     Volume:  90     ISSN:  1755-3768     ISO Abbreviation:  Acta Ophthalmol     Publication Date:  2012 Jun 
Date Detail:
Created Date:  2012-05-29     Completed Date:  2012-08-09     Revised Date:  2014-07-31    
Medline Journal Info:
Nlm Unique ID:  101468102     Medline TA:  Acta Ophthalmol     Country:  England    
Other Details:
Languages:  eng     Pagination:  e288-94     Citation Subset:  IM    
Copyright Information:
© 2012 The Authors. Acta Ophthalmologica © 2012 Acta Ophthalmologica Scandinavica Foundation.
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MeSH Terms
Descriptor/Qualifier:
Adult
Aged
Blood Flow Velocity
Blood Pressure / physiology
Choroid / blood supply*
Electroretinography
Female
Glaucoma / physiopathology*
Humans
Intraocular Pressure / physiology
Laser-Doppler Flowmetry
Male
Middle Aged
Regional Blood Flow / physiology
Retina / physiopathology*
Visual Acuity / physiology
Visual Field Tests

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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