A Strategy for Averaged Estimates of Visual Field Threshold

Rosa, Manuel González de la; González-Hernández, Marta

doi:10.1097/ijg.0b013e318239c1a3

Cited by 11 publications

(6 citation statements)

References 23 publications

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“…SPARK perimetry appears to show useful sensitivity and specificity, and good agreement with the morphology. 12,25 In our study, even though the exact determination of retinal sensitivity thresholds varied between devices, the average mean difference for global indices was relatively small, and a moderate correlation between them was found. In addition, when it comes to structure-functional correlation analysis, it should be noted the greater coefficient of determination values we found between OCT's RNFL thickness and EF MD, when compared to HFA MD values.…”

Section: Discussionmentioning

confidence: 48%

“…These statistical relationships are derived from almost 100,000 VF examinations. 12,13 Overall, by adopting this different methodology, the strategy aims to provide a faster exam and mitigate fatigue-related issues. On the other hand, it is still to be better understood how this new approach would influence the final retinal sensitivity estimation in comparison to other more well-established VF tests.…”

Section: Introductionmentioning

confidence: 99%

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<p>Retinal Sensitivity Thresholds Obtained Through Easyfield and Humphrey Perimeters in Eyes with Glaucoma: A Cross-Sectional Comparative Study</p>

Nazareth

Rocha

Scoralick

et al. 2020

OPTH

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Objective: To compare global retinal sensitivity thresholds obtained through the Easyfield perimeter (EF) and Humphrey visual field analyzer (HFA). Design: Observational cross-sectional study. Participants: Glaucomatous patients and glaucoma suspects enrolled between October 2018 and April 2019. Materials and Methods: All participants underwent EF (SPARK Precision) and HFA perimetry (SITA-Standard). After inclusion, demographic and ocular data were collected, including measurements of retinal nerve fiber layer (RNFL) thickness obtained from spectraldomain optical coherence tomography (SD-OCT). Global indices (mean deviation, MD; pattern standard deviation, PSD) values were compared between perimeters, and their correlation and agreement were evaluated. We used regression analysis to investigate structure-functional correlations between SD-OCT measurements and MD index of each perimeter. Results: We investigated 111 eyes from 69 patients. Mean MD (mean difference=1.49dB) and PSD values (mean difference=0.42dB) from the HFA were significantly larger than those from the EF perimeter (p<0.001). There were significant linear correlations between EF-MD and HFA-MD (r=0.56), and EF-PSD and HFA-PSD (r=0.38; p<0.001). We found significant non-linear associations between average RNFL thickness and MD values derived from both EF (R 2 =0.41) and HFA (R 2 =0.17) perimeters (p≤0.012). A difference <2dB between EF-MD and HFA-MD was found in 53% of the eyes, while 71% of them had a difference <1dB between EF-PSD and HFA-PSD. Conclusion: While we found a moderate correlation and a small mean sensitivity difference between test results, EF's correlation with structural measurements was at least comparable to that of the HFA. Our findings suggest that although these tests should not be used interchangeably, EF SPARK Precision could be used as an alternative for functional assessment in eyes with mild glaucoma.

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Section: Discussionmentioning

confidence: 48%

Section: Introductionmentioning

confidence: 99%

<p>Retinal Sensitivity Thresholds Obtained Through Easyfield and Humphrey Perimeters in Eyes with Glaucoma: A Cross-Sectional Comparative Study</p>

Nazareth

Rocha

Scoralick

et al. 2020

OPTH

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“…Also, four perimetric examinations were performed on the same day, twice with the OCULUS Smartfield perimeter (OCULUS Optikgeräte GmbH, Wetzlar, Germany) using SPARK strategy 24,25 and twice with the Humphrey Analyzer (Carl Zeiss Meditec, Irvine, CA, USA) using 24–2 SITA-Fast strategy, 26 after at least two previous examinations. SPARK examines 66 points and SITA 52 points.…”

Section: Methodsmentioning

confidence: 99%

New visual field indices of disharmony for early diagnosis of glaucoma, alone or associated with conventional parameters

Abreu-González¹,

González-Hernández

Pena-Betancor

et al. 2018

European Journal of Ophthalmology

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“…The new Spark strategy (16) was used in an Easyfield perimeter (Oculus Optikgeräte GmbH, Wetzlar, Germany). It examines 66 central visual field points, separated by 6 degrees, in less than 3 minutes.…”

Section: Perimetrymentioning

confidence: 99%

Glaucoma Morphologic Damage Estimated from Functional Tests

Rosa

González-Hernández

Alayón

2015

European Journal of Ophthalmology

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A Strategy for Averaged Estimates of Visual Field Threshold

Abstract: Bearing in mind threshold fluctuation, the strategy allows for several possible outcomes, and provides averaged and theoretically more stable results.

Cited by 11 publications

References 23 publications

<p>Retinal Sensitivity Thresholds Obtained Through Easyfield and Humphrey Perimeters in Eyes with Glaucoma: A Cross-Sectional Comparative Study</p>

<p>Retinal Sensitivity Thresholds Obtained Through Easyfield and Humphrey Perimeters in Eyes with Glaucoma: A Cross-Sectional Comparative Study</p>

New visual field indices of disharmony for early diagnosis of glaucoma, alone or associated with conventional parameters

Glaucoma Morphologic Damage Estimated from Functional Tests

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