Regional assessment of cone system function following uncomplicated retinal detachment surgery

To evaluate regional cone system function after uncomplicated retinal detachment (RD) surgery, by recording focal electroretinograms (FERGs) from the central and paracentral regions of the posterior pole. FERGs in response to either a central (eccentricity: 0-2.25 deg) or a paracentral annular (2.25...

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Bibliographic Details
Published in:Documenta ophthalmologica 2005-01, Vol.110 (1), p.103-110
Main Authors: Montrone, Lucrezia, Ziccardi, Lucia, Stifano, Giovanna, Piccardi, Marco, Molle, Fernando, Focosi, Francesco, Fadda, Antonello, Falsini, Benedetto
Format: Article
Language:English
Subjects:
Adolescent
Adult
Aged
Aged, 80 and over
Electroretinography
Follow-Up Studies
Humans
Middle Aged
Ophthalmologic Surgical Procedures
Postoperative Period
Retinal Cone Photoreceptor Cells - physiology
Retinal Detachment - physiopathology
Retinal Detachment - surgery
Visual Acuity
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Summary:To evaluate regional cone system function after uncomplicated retinal detachment (RD) surgery, by recording focal electroretinograms (FERGs) from the central and paracentral regions of the posterior pole. FERGs in response to either a central (eccentricity: 0-2.25 deg) or a paracentral annular (2.25-9 deg) uniform field, presented on a light adapting background and sinusoidally flickered at 41 Hz (95% modulation depth, 93 cd/m(2) mean luminance) were recorded from 16 eyes (16 patients) 2 weeks to 420 months following uncomplicated RD surgery (encircling procedure with or without scleral buckling). Pre-operatively, 10 out of 16 eyes had a macular RD. Mean time elapsed from onset of symptoms to surgery was 20 days (range: 5-90 days). Post-operatively, visual acuity ranged 0.1 to 1.0. Eight age-matched normal subjects served as controls. Amplitude and phase of the FERG fundamental harmonic were measured. Compared to control eyes, affected eyes' central and paracentral FERGs were on average reduced in amplitude (by 40% and 28%, respectively, p
ISSN:0012-4486
1573-2622
DOI:10.1007/s10633-005-7554-3