Abstract
The purpose of this study is to evaluate pattern electroretinogram optimized for glaucoma screening (PERGLA) and retinal nerve fiber layer (RNFL) at spectral optical coherence tomography (OCT) in eyes with suspected glaucoma (GS) and in eyes with ocular hypertension (OHT). This is a cross-sectional, observational study. Twenty-four patients with GS (BCVA 20/20, normal visual field, intraocular pressure, IOP, less than 21 mmHg, and glaucomatous optic neuropathy, GON) and 14 patients with OHT (BCVA 20/20, intraocular pressure 25 mmHg, absence of glaucomatous optic neuropathy and normal visual field) were considered in this study. GON was intended as vertical cup-disk ratio of 0.5 or more; asymmetry of greater than 0.2, disk notching, disk splinter hemorrhages. PERGLA amplitude and phase were measured, while thickness of the RNFL was obtained with spectral OCT. A control group of 50 age-matched healthy patients was added. In the GS group, 16 eyes (66.7%) showed normal average RNFL analysis and normal PERGLA, 3 eyes (12.5%) showed abnormal average RNFL analysis and abnormal PERGLA, 5 eyes (20.8%) presented with normal average RNFL analysis and abnormal PERGLA. In the OHT group, 11 eyes (78.6%) showed an average normal RNFL and normal PERGLA, while 3 eyes (21.4%) presented with an average normal RNFL and abnormal PERGLA. PERGLA is a non-invasive, fast, and fully automatic version of the pattern ERG. In eyes with OHT and in eyes with GS, PERGLA abnormalities in presence of a normal RNFL could suggest an early functional damage of viable retinal ganglion cells.
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Fiorentini A, Maffei L, Pirchio M, Spinelli D, Porciatti V (1981) The ERG in response to alternating gratings in patients with diseases of the peripheral visual pathway. Invest Ophthalmol Vis Sci 21:490–493
Porciatti V, Ventura LM (2009) Adaptive changes of inner retina function in response to sustained pattern stimulation. Vis Res 49:505–513
Ventura LM, Porciatti V (2006) Pattern electroretinogram in glaucoma. Curr Opin Ophthalmol 17(2):196–202
Parikh RS, Parikh S, Sekhar GC, Kumar RS, Prabakaran S, Babu JG, Thomas R (2007) Diagnostic capability of optical coherence tomography (Stratus OCT 3) in early glaucoma. Ophthalmology 114:2238–2243
Naithani P, Sihota R, Sony P, Dada T, Gupta V, Kondal D, Pandey RM (2007) Evaluation of optical coherence tomography and heidelberg retinal tomography parameters in detecting early and moderate glaucoma. Invest Ophthalmol Vis Sci 48:3138–3145
Lalezary M, Medeiros FA, Weinreb RN, Bowd C, Sample PA, Tavares IM, Tafreshi A, Zangwill LM (2006) Baseline optical coherence tomography predicts the development of glaucomatous change in glaucoma suspects. Am J Ophthalmol 142(4):576–582
Panagakis E, Moschos M (1998) Pattern ERG changes in suspected glaucoma. Ophthalmologica 212:112–114
Parisi V, Manni G, Gandolfi SA, Centofanti M, Colacino G, Bucci MG (1999) Visual function correlates with nerve fiber layer thickness in eyes affected by ocular hypertension. Invest Ophthalmol Vis Sci 40:1828–1833
Ventura LM, Sorokac N, De Los Santos R, Feuer WJ, Porciatti V (2006) The relationship between retinal ganglion cell function and retinal nerve fiber thickness in early glaucoma. Invest Ophthalmol Vis Sci 47:3904–3911
Porciatti V, Ventura LM (2004) Normative data for a user-friendly paradigm for pattern electroretinogram recording. Ophthalmology 111:161–168
Yang A, Swanson WH (2007) A new pattern electroretinogram paradigm evaluated in terms of user friendliness and agreement with perimetry. Ophthalmology 114:671–679
Fredette MJ, Anderson DR, Porciatti V, Feuer W (2008) Reproducibility of pattern electroretinogram in glaucoma patients with a range of severity of disease with the new glaucoma paradigm. Ophthalmology 115:957–963
Bowd C, Vizzeri G, Tafreshi A, Zangwill LM, Sample PA, Weinreb RN (2009) Diagnostic accuracy of pattern electroretinogram optimized for glaucoma detection. Ophthalmology 116:437–443
Gordon MO, Kass MA (1999) Ocular hypertension treatment study group. The ocular hypertension treatment study: design and baseline description of the participants. Arch Ophthalmol 117:573–583
Ventura LM, Porciatti V, Ishida K, Feuer WJ, Parrish RK 2nd (2005) Pattern electroretinogram abnormality and glaucoma. Ophthalmology 112:10–19
Bach M, Unsoeld AS, Philippin H et al (2006) Pattern ERG as an early glaucoma indicator in ocular hypertension: a long-term, prospective study. Invest Ophthalmol Vis Sci 47:4881–4887
Falsini B, Marangoni D, Salgarello T et al (2008) Structure-function relationship in ocular hypertension and glaucoma: interindividual and interocular analysis by OCT and pattern ERG. Graefes Arch Clin Exp Ophthalmol 246:1153–1162
Bach M (2001) Electrophysiological approaches for early detection of glaucoma. Eur J Ophthalmol 11(suppl 2):41–49
Bach M, Pfeiffer N, Birkner-Binder D (1992) Pattern-electroretinogram reflects diffuse retinal damage in early glaucoma. Clin Vision Sci 7:335–340
Ventura LM, Porciatti V (2005) Restoration of retinal ganglion cell function in early glaucoma after intraocular pressure reduction: a pilot study. Ophthalmology 112:20–27
Bach M, Hiss P, Rover J (1988) Check-size specific changes of pattern electroretinogram in patients with early open-angle glaucoma. Doc Ophthalmol 69:315–322
Porciatti V, Falsini B, Brunori S, Colotto A, Moretti G (1987) Pattern electroretinogram as a function of spatial frequency in ocular hypertension and early glaucoma. Doc Ophthalmol 65:349–355
Ambrosio G, Arienzo G, Aurilia P, Colasanti A, Fusco R (1988) Pattern electroretinograms in ocular hypertension. Doc Ophthalmol 69:161–165
Bach M, Speidel-Fiaux A (1989) Pattern electroretinogram in glaucoma and ocular hypertension. Doc Ophthalmol 73:173–181
Parisi V, Manni G, Centofanti M, Gandolfi SA, Olzi D, Bucci MG (2001) Correlation between optical coherence tomography, pattern electroretinogram, and visual evoked potentials in open-angle glaucoma patients. Ophthalmology 108(5):905–912
Gonzalvo Ibanez FJ, Fernandez Tirado FJ, Almarcegui Lafita C, Polo Llorens V, Sanchez Perez A, Honrubia Lopez FM (2001) Predictive value of the pattern-electroretinogram in glaucoma. Arch Soc Esp Oftalmol 76:485–491
Bayer AU, Maag KP, Erb C (2002) Detection of optic neuropathy in glaucomatous eyes with normal standard visual fields using a test battery of short-wavelength automated perimetry and pattern electroretinography. Ophthalmology 109:1350–1361
Bach M, Sulimma F, Gerling J (1997) Little correlation of the pattern electroretinogram (PERG) and visual field measures in early glaucoma. Doc Ophthalmol 94:253–263
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Forte, R., Ambrosio, L., Bonavolontà, P. et al. Pattern electroretinogram optimized for glaucoma screening (PERGLA) and retinal nerve fiber thickness in suspected glaucoma and ocular hypertension. Doc Ophthalmol 120, 187–192 (2010). https://doi.org/10.1007/s10633-009-9211-8
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DOI: https://doi.org/10.1007/s10633-009-9211-8