Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study
Purpose. To investigate the effects of Bangerter filters on the visual field in healthy and in amblyopic patients. Materials and Methods. Fifteen normal adults and fifteen anisometropic amblyopia patients were analysed with standard automated perimetry (SAP) and frequency doubling technology (FDT) a...
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Wiley
2015-01-01
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| Series: | Journal of Ophthalmology |
| Online Access: | http://dx.doi.org/10.1155/2015/909848 |
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| author | Costantino Schiavi Filippo Tassi Alessandro Finzi Mauro Cellini |
| author_facet | Costantino Schiavi Filippo Tassi Alessandro Finzi Mauro Cellini |
| author_sort | Costantino Schiavi |
| collection | DOAJ |
| description | Purpose. To investigate the effects of Bangerter filters on the visual field in healthy and in amblyopic patients. Materials and Methods. Fifteen normal adults and fifteen anisometropic amblyopia patients were analysed with standard automated perimetry (SAP) and frequency doubling technology (FDT) at baseline and with filters 0.8 and 0.1.
Results. With 0.1 filter in SAP there was an increase of MD compared with controls (−10.24 ± 1.09 dB) in either the amblyopic (−11.34 ± 2.06 dB; P<0.050) or sound eyes (−11.34 ± 1.66 dB; P<0.030). With filters 0.8 the PSD was increased in the amblyopic eyes (2.09 ± 0.70 dB; P<0.007) and in the sound eyes (1.92 ± 0.29 dB; P<0.004) compared with controls. The FDT-PSD values in the control group were increased with the interposition of the filters compared to baseline (0.8; P<0.0004 and 0.1; P<0.0010). We did not find significant differences of the baseline PSD between amblyopic eyes (3.80 ± 2.21 dB) and the sound eyes (4.33 ± 1.31 dB) and when comparing the filters 0.8 (4.55 ± 1.50 versus 4.53 ± 1.76 dB) and 0.1 (4.66 ± 1.80 versus 5.10 ± 2.04 dB). Conclusions. The use of Bangerter filters leads to a reduction of the functionality of the magno- and parvocellular pathway. |
| format | Article |
| id | doaj-art-9006b80b51d64df186bdb6d92aa53c16 |
| institution | Kabale University |
| issn | 2090-004X 2090-0058 |
| language | English |
| publishDate | 2015-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Ophthalmology |
| spelling | doaj-art-9006b80b51d64df186bdb6d92aa53c162025-02-03T06:12:09ZengWileyJournal of Ophthalmology2090-004X2090-00582015-01-01201510.1155/2015/909848909848Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry StudyCostantino Schiavi0Filippo Tassi1Alessandro Finzi2Mauro Cellini3Department of Specialized, Diagnostic and Experimental Medicine, Ophthalmology Service, University of Bologna, 40100 Bologna, ItalyDepartment of Specialized, Diagnostic and Experimental Medicine, Ophthalmology Service, University of Bologna, 40100 Bologna, ItalyDepartment of Specialized, Diagnostic and Experimental Medicine, Ophthalmology Service, University of Bologna, 40100 Bologna, ItalyDepartment of Specialized, Diagnostic and Experimental Medicine, Ophthalmology Service, University of Bologna, 40100 Bologna, ItalyPurpose. To investigate the effects of Bangerter filters on the visual field in healthy and in amblyopic patients. Materials and Methods. Fifteen normal adults and fifteen anisometropic amblyopia patients were analysed with standard automated perimetry (SAP) and frequency doubling technology (FDT) at baseline and with filters 0.8 and 0.1. Results. With 0.1 filter in SAP there was an increase of MD compared with controls (−10.24 ± 1.09 dB) in either the amblyopic (−11.34 ± 2.06 dB; P<0.050) or sound eyes (−11.34 ± 1.66 dB; P<0.030). With filters 0.8 the PSD was increased in the amblyopic eyes (2.09 ± 0.70 dB; P<0.007) and in the sound eyes (1.92 ± 0.29 dB; P<0.004) compared with controls. The FDT-PSD values in the control group were increased with the interposition of the filters compared to baseline (0.8; P<0.0004 and 0.1; P<0.0010). We did not find significant differences of the baseline PSD between amblyopic eyes (3.80 ± 2.21 dB) and the sound eyes (4.33 ± 1.31 dB) and when comparing the filters 0.8 (4.55 ± 1.50 versus 4.53 ± 1.76 dB) and 0.1 (4.66 ± 1.80 versus 5.10 ± 2.04 dB). Conclusions. The use of Bangerter filters leads to a reduction of the functionality of the magno- and parvocellular pathway.http://dx.doi.org/10.1155/2015/909848 |
| spellingShingle | Costantino Schiavi Filippo Tassi Alessandro Finzi Mauro Cellini Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study Journal of Ophthalmology |
| title | Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study |
| title_full | Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study |
| title_fullStr | Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study |
| title_full_unstemmed | Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study |
| title_short | Alterations Induced by Bangerter Filters on the Visual Field: A Frequency Doubling Technology and Standard Automated Perimetry Study |
| title_sort | alterations induced by bangerter filters on the visual field a frequency doubling technology and standard automated perimetry study |
| url | http://dx.doi.org/10.1155/2015/909848 |
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