The Amsler Grid Test in Radiotherapy

Radiology ◽  
1976 ◽  
Vol 118 (2) ◽  
pp. 468-469
Author(s):  
J. Lawton Smith
Keyword(s):  
Amsler Grid ◽  
Grid Test

scholarly journals Amsler grid test for detection of advanced glaucoma in Ethiopia

PLoS ONE ◽  
2020 ◽  
Vol 15 (3) ◽  
pp. e0230017
Author(s):  
Girum W. Gessesse ◽  
Lemlem Tamrat ◽  
Karim F. Damji
Keyword(s):  
Advanced Glaucoma ◽  
Amsler Grid ◽  
Grid Test

scholarly journals Three-dimensional computer-automated threshold Amsler grid test

2004 ◽  
Vol 9 (1) ◽  
pp. 149 ◽  
Author(s):  
Wolfgang Fink ◽  
Alfredo A. Sadun
Keyword(s):  
Three Dimensional ◽  
Amsler Grid ◽  
Grid Test

Efficacy of the Amsler Grid Test in Evaluating Glaucomatous Central Visual Field Defects

Ophthalmology ◽  
2016 ◽  
Vol 123 (4) ◽  
pp. 737-743 ◽  
Author(s):  
Daniel Su ◽  
Andrew Greenberg ◽  
Joseph L. Simonson ◽  
Christopher C. Teng ◽  
Jeffrey M. Liebmann ◽  
...  
Keyword(s):  
Visual Field ◽  
Visual Field Defects ◽  
Central Visual Field ◽  
Amsler Grid ◽  
Field Defects ◽  
Grid Test

scholarly journals Effectiveness of measuring the central field with the Berkeley field test

2014 ◽  
Vol 6 (2) ◽  
pp. 170-176
Author(s):  
Sanjeeb K Mishra ◽  
Gauri S Shrestha ◽  
Hiral Korani
Keyword(s):  
Visual Field ◽  
Field Test ◽  
Predictive Value ◽  
Scoring System ◽  
Central Field ◽  
Central Visual Field ◽  
Near Vision ◽  
Amsler Grid ◽  
Sensitivity Specificity ◽  
Grid Test

Introduction: There are several limitations of the Amsler chart as a screening tool due to its low sensitivity and high false-negative results. The Berkeley central visual field test (BCFT), which is a simple power-point presentation of a 50-point scoring system for the central 10-degree of the visual field, was devised as an alternative to the Amsler chart.Objectives: To compare the efficacy of measuring the central visual field using the Berkeley central field test (BCFT) and the Amsler grid test.Materials and methods: In a comparative and validity study, 30 subjects with maculopathy and 35 controls were recruited. The maculopathy subjects with the best corrected visual acuity of 20/200 or better and 2.5M for distant and near vision respectively, were included. All the subjects under went a complete eye examination where visual assessment was done using the distant and near vision Log MAR Chart. The subjects were assessed with the Amsler chart-II at a distance of 30 cm. The BCFT was used as a 50- point scoring system. The effectiveness of BCFT was compared with that of the Amsler grid regarding the sensitivity, specificity, positive predictive value (PPV) and negative predictive value (NPV).  Results: Out of 65 subjects, 30 subjects had maculopathy and 35 were normal. The mean age of the 65 subjects was 49.8±9.1 years. Of the 30 subjects with maculopathy, the majority (54%) had age- related macular degeneration. The sensitivity, specificity, PPV and NPV of the Amsler grid test were found to be 80%, 100%, 100% and 87%, respectively, whereas those of the BCFT were 71%, 99%, 98% and 82% (p=0.37). Conclusion: The BCFT test was as good as the Amsler grid test at detecting the presence of maculopathy.DOI: http://dx.doi.org/10.3126/nepjoph.v6i2.11701Nepal J Ophthalmol 2014; 6 (12): 170-176 

Central perpendicular line in macular spectral-domain optical coherence tomography in five eyes

2019 ◽  
Vol 30 (2) ◽  
pp. NP16-NP22
Author(s):  
María Carmen Guixeres Esteve ◽  
Laurence Postelmans
Keyword(s):  
Optical Coherence Tomography ◽  
Visual Acuity ◽  
Spectral Domain ◽  
Optical Coherence ◽  
Perpendicular Line ◽  
Corrected Visual Acuity ◽  
Amsler Grid ◽  
Interdigitation Zone ◽  
Best Corrected Visual Acuity ◽  
Grid Test

Purpose: The aim of this study is to report a rare spectral-domain optical coherence tomography finding in the macula. Methods: This is a descriptive consecutive case series. Patients diagnosed with hyperreflective central perpendicular line in the macular spectral-domain optical coherence tomography were included. Best-corrected visual acuity assessment, standard Amsler grid test, biomicroscopic examination and macular spectral-domain optical coherence tomography were performed. Results: We examined three men and one woman, aged 56 to 91 years (average age: 75.25 years). Spectral-domain optical coherence tomography showed a hyperreflective central perpendicular line in five eyes accompanied by vitreofoveal adhesion in all of them. In two eyes, we observed a lifting of the ellipsoid zone, and in one eye the external limiting membrane was also pulled. In one eye, a subtle lifting of the interdigitation zone was revealed. In another eye, we also found a triangular foveolar detachment of the interdigitation zone. Snellen’s best-corrected visual acuity ranged from 0.2 to −0.1 logMAR (average of 0.006 logMAR). Amsler grid test was unremarkable in four eyes and metamorphopsia was detected in one eye. One eye developed a full-thickness macular hole several weeks after the phacoemulsification cataract surgery. Conclusion: The presence of a central perpendicular line can be revealed by the macular spectral-domain optical coherence tomography. We hypothesize that this finding could be considered as a sign of vitreomacular traction. In our patients, best-corrected visual acuity was only mildly reduced, and Amsler grid test was affected in only one eye.

Visual Field Examination in Glaucoma Patients : Humphrey Visual Field Analysis vs Amsler Grid

2017 ◽  
Vol 43 (2) ◽  
pp. 124
Author(s):  
Ivana Tanoko ◽  
Fifin L Rahmi
Keyword(s):  
Visual Field ◽  
Visual Field Defect ◽  
Glaucoma Patient ◽  
Field Analysis ◽  
Glaucomatous Optic Neuropathy ◽  
Visual Field Examination ◽  
Cross Sectional ◽  
Rnfl Thickness ◽  
Amsler Grid ◽  
Field Defect

Introduction and Objective: Glaucoma is the leading cause of global irreversible blindness, signed by glaucomatous optic neuropathy related to visual field defect. The purpose of the study is comparing visual field defect examination using HVFA to Amsler Grid in glaucoma patient at dr. Kariadi Hospital. Methods: This is a cross-sectional study. Amsler Grid were performed to the patients who have reliable HVFA at last 6 months and presented as descriptive analytic results. Result: There were 40 eyes involved in this study from 27 patients (15 men, 12 women), 26-68 years old and visual acuity 1/60-6/6. Seventeen eyes showed visual field defect in HVFA and Amsler Grid had average MD - 24.97 dB, CDR 0.89 and RNFL thickness 51.74. We found that 11 eyes didn’t showed in both of examination had average MD -8.06, CDR 0.63 and RNFL thickness 103.23 and those parameters are significantly different to the 17 eyes before (p<0.05). Data from 12 eyes that showed visual field defect only one of examination (9 only in HVFA and 3 in Amsler Grid) didn’t show difference statistically each other. Conclusion: HFVA and Amsler Grid seemed to be comparable in detecting visual field defect in advanced glaucoma.

scholarly journals Alternate Arm Converters-Based HVDC Model Compatible With the CIGRE B4 DC Grid Test System

2019 ◽  
Vol 34 (1) ◽  
pp. 149-159 ◽  
Author(s):  
Harith R. Wickramasinghe ◽  
Georgios Konstantinou ◽  
Zixin Li ◽  
Josep Pou
Keyword(s):  
Test System ◽  
Grid Test
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