Regional assessment of cone system function following uncomplicated retinal detachment surgery

Lucrezia Montrone, Lucia Ziccardi, Giovanna Stifano, Marco Piccardi, Fernando Molle, Francesco Focosi, Antonello Fadda, Benedetto Falsini

Research output: Contribution to journalArticlepeer-review


Purpose: 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. Methods: FERGs in response to either a central (eccentricity: 0-2.25 de g) 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/m2 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. Results: Compared to control eyes, affected eyes' central and paracentral FERGs were on average reduced in amplitude (by 40% and 28%, respectively, p

Original languageEnglish
Pages (from-to)103-110
Number of pages8
JournalDocumenta Ophthalmologica
Issue number1
Publication statusPublished - Jan 2005


  • Cone system
  • Focal electroretinogram
  • Functional recovery
  • Retinal detachment
  • Surgery

ASJC Scopus subject areas

  • Ophthalmology


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