Clinical evaluation of frequency doubling technology perimetry using the Humphrey Matrix 24-2 threshold strategy

Spry, Paul G.; Hussin, H M; Sparrow, J M

doi:10.1136/bjo.2004.057778

Cited by 56 publications

(70 citation statements)

References 12 publications

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“…Spry and colleagues, 176 in a cohort study set in the UK, reported the test accuracy of the FDT C-20 matrix (Humphrey matrix 24-2). An abnormal test result was defined as a GHT outside the normal limit and/or p < 0.05 with the pattern standard deviation global index in one or both eyes.…”

Section: Fdt (C-20 Full Threshold and C-20 Matrix)mentioning

confidence: 99%

“…164 For the common cut-off, sensitivity ranged from 25% (sufficient points to drop the indicator into the suspicious zone or below) 164 to 90% (at least four abnormal points in any single quadrant), 162 while specificity ranged from 67% (absolute or relative defects ജ17) 168 to 96% (sufficient points to drop the indicator into the suspicious zone or below). 164 The pooled sensitivity, specificity and DOR from the meta-analysis models for the common cut-off 186 Ivers, 2001 157 Katz, 1993 159 Marraffa, 1989 174 Mundorf, 1989 162 Vernon, 1990 164 Vitale, 2000 166 Wang, 1998 157 Katz, 1993 159 Mundorf, 1989 162 Vernon, 1990 164 Wang 1998 168 Harper, 1994 182 Ieong 176 and two case-control studies.…”

Section: Figure 31(a) and (B)mentioning

confidence: 99%

“…The earliest study took place in 1963 21 and the latest in 2003/04, 156,176 while 21 studies gave no indication of the period in which they were carried out. Thirteen studies took place in the USA, 22,158,159,162,166,168,170,172,175,181,[187][188][189] nine in the UK, 21,164,176,177,180,182,186,190,191 four in Australia, 115,157,163,173 two each in Italy, 106,174 The Netherlands, 169,183 Spain 99,179 and Sweden, 100,171 one each in Belgium, 155 Canada, 156 Greece, 112 India 161 and Norway, 154 and one in Canada and Finland. 178 Twenty-six studies gave details of the gender of their participants, 51% of whom were women.…”

Section: Characteristics Of Studiesmentioning

confidence: 99%

See 2 more Smart Citations

The clinical effectiveness and cost-effectiveness of screening for open angle glaucoma: a systematic review and economic evaluation

Burr¹,

Mowatt²,

Hernández³

et al. 2007

Health Technol Assess

330

380

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Non-UK purchasers will have to pay a small fee for post and packing. For European countries the cost is £2 per monograph and for the rest of the world £3 per monograph.You can order HTA monographs from our Despatch Agents:-fax (with credit card or official purchase order) -post (with credit card or official purchase order or cheque) -phone during office hours (credit card only).Additionally the HTA website allows you either to pay securely by credit card or to print out your order and then post or fax it. NHS libraries can subscribe free of charge. Public libraries can subscribe at a very reduced cost of £100 for each volume (normally comprising 30-40 titles). The commercial subscription rate is £300 per volume. Please see our website for details. Subscriptions can only be purchased for the current or forthcoming volume. Contact details are as follows: Payment methods Paying by chequeIf you pay by cheque, the cheque must be in pounds sterling, made payable to Direct Mail Works Ltd and drawn on a bank with a UK address. Paying by credit cardThe following cards are accepted by phone, fax, post or via the website ordering pages: Delta, Eurocard, Mastercard, Solo, Switch and Visa. We advise against sending credit card details in a plain email. Paying by official purchase orderYou can post or fax these, but they must be from public bodies (i.e. NHS or universities) within the UK. We cannot at present accept purchase orders from commercial companies or from outside the UK. How do I get a copy of HTA on CD?Please use the form on the HTA website (www.hta.ac.uk/htacd.htm). Or contact Direct Mail Works (see contact details above) by email, post, fax or phone. HTA on CD is currently free of charge worldwide.The website also provides information about the HTA Programme and lists the membership of the various committees. HTA NIHR Health Technology Assessment ProgrammeT he Health Technology Assessment (HTA) programme, now part of the National Institute for Health Research (NIHR), was set up in 1993. It produces high-quality research information on the costs, effectiveness and broader impact of health technologies for those who use, manage and provide care in the NHS. 'Health technologies' are broadly defined to include all interventions used to promote health, prevent and treat disease, and improve rehabilitation and long-term care, rather than settings of care. The research findings from the HTA Programme directly influence decision-making bodies such as the National Institute for Health and Clinical Excellence (NICE) and the National Screening Committee (NSC). HTA findings also help to improve the quality of clinical practice in the NHS indirectly in that they form a key component of the 'National Knowledge Service'. The HTA Programme is needs-led in that it fills gaps in the evidence needed by the NHS. There are three routes to the start of projects. First is the commissioned route. Suggestions for research are actively sought from people working in the NHS, the public and consumer groups and professional bodies such as r...

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Section: Fdt (C-20 Full Threshold and C-20 Matrix)mentioning

confidence: 99%

Section: Figure 31(a) and (B)mentioning

confidence: 99%

Section: Characteristics Of Studiesmentioning

confidence: 99%

See 1 more Smart Citation

The clinical effectiveness and cost-effectiveness of screening for open angle glaucoma: a systematic review and economic evaluation

Burr¹,

Mowatt²,

Hernández³

et al. 2007

Health Technol Assess

330

380

View full text Add to dashboard Cite

show abstract

“…Most reports that compare the results of Humphrey Matrix with those of the Humphrey Field Analyser indicate that the two VF techniques produce similar results. 27 Additionally, HMP has been reported to have reasonably uniform variability properties for all levels of glaucomatous VF loss, 24 and some studies have suggested that FDT testing may be useful for determining glaucomatous visual progression. 7,28 In SAP, a learning effect can influence the results of the VF test in both healthy and glaucomatous patients.…”

Section: Discussionmentioning

confidence: 99%

Learning effect in visual field testing of healthy subjects using Humphrey Matrix frequency doubling technology perimetry

Pierre-Filho¹,

Gomes²,

Pierre³

et al. 2009

Eye

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Purpose To evaluate the learning effect of frequency doubling technology (FDT) perimetry using the Humphrey Matrix perimeter in healthy subjects with no perimetric experience. Methods One eye of 28 healthy adults who had no history of visual field testing underwent three Matrix tests using 24-2 programme with full-threshold strategy. The results of the first session were compared with those of the second, and the third sessions. Learning effect was defined as an improvement at results for duration, perimetric indices, and the number of points with a Po5 and o1% in the total and pattern deviation maps. Anderson's criteria were applied to define abnormal examinations. Results The mean in the mean deviation global index was À7.40 ± 1.49 dB in the first session, À4.64±0.97 dB in the second session, and À3.29±0.93 dB in the third session. Pattern standard deviations were decreased as the tests were repeated (Po0.01). Test duration, fixation losses, false negative, and the number of points with a Po5 and o1% in the total and pattern deviation maps rate were also changed significantly (Po0.05). Among the criteria suggested by Anderson, the Glaucoma Hemifield Test performed better in all session tests. The false-positive rates ranged from 50% (95% confidence intervals [CI] 30.6-69.4%) to 64% (95% CI 44.1-81.4%) for the first session, 29% (95% CI 13.2-48.7%) to 54% (95% CI 33.9-72.5%) for the second session, and from 18% (95% CI 6.1-36.9%) to 32% (95% CI 15.9-52.4%) for the third session. ConclusionsThe results of this study show that the learning effect for Humphrey Matrix FDT perimetry must be considered in normal individuals with no perimetric experience.

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“…Similar to SAP, FDT Matrix also provides raw sensitivity values, total and pattern deviation probability plots, and the summary indices of MD and PSD. Matrix FDT has been reported by some to be better than SAP for discriminating glaucomatous and healthy eyes (Racette et al, 2008); however, others found no difference between Matrix FDT and SAP (Spry et al, 2005). SWAP has also been modified over the years and now utilizes the SITA strategy to shorten the test duration.…”

Section: Figurementioning

confidence: 99%

Strategies to improve early diagnosis in glaucoma

Tatham¹,

Medeiros²,

Zangwill³

et al. 2015

Progress in Brain Research

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Early diagnosis and treatment of glaucoma is important to reduce the risk of progressive and irreversible visual loss. The key to diagnosis is recognition of morphological changes to the optic nerve head and retinal nerve fiber layer, but in some patients, functional abnormalities are detected first. This review describes recent innovations with the potential to improve the early detection of glaucoma. Developments in imaging include novel optic nerve head metrics such as Bruch's membrane opening-minimum rim width, enhanced ability to quantify inner layers of the glaucomatous macula, and ability to image deep optic nerve head structures, including the lamina cribrosa. Developments in detection of early glaucomatous functional loss include novel perimetric tests using frequency-doubling technology and flicker-defined form stimuli. Methods to combine results of structural and functional assessments are also presented that may improve early detection of glaucoma. KeywordsGlaucoma, Optical coherence tomography, OCT, Perimetry, Spectral domain, Early diagnosis Glaucoma is a leading cause of blindness, affecting more than 70 million people worldwide, of whom approximately 10% are bilaterally blind (Quigley and Broman, 2006). Glaucomatous visual losses can be prevented with early diagnosis and treatment; however, affected individuals are typically asymptomatic until later stages of the disease and a large proportion of those affected remain undiagnosed. Population-level surveys suggest only 10-50% of people with glaucoma are aware that they have the condition and consequently there are a large number of people Progress in Brain Research, Volume 221, ISSN 0079-6123, http://dx

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Clinical evaluation of frequency doubling technology perimetry using the Humphrey Matrix 24-2 threshold strategy

Cited by 56 publications

References 12 publications

The clinical effectiveness and cost-effectiveness of screening for open angle glaucoma: a systematic review and economic evaluation

The clinical effectiveness and cost-effectiveness of screening for open angle glaucoma: a systematic review and economic evaluation

Learning effect in visual field testing of healthy subjects using Humphrey Matrix frequency doubling technology perimetry

Strategies to improve early diagnosis in glaucoma

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