Tablets at the bedside - iPad-based visual field test used in the diagnosis of Intrasellar Haemangiopericytoma: a case report

Nesaratnam, Nisha; Thomas, Peter; Kirollos, Ramez; Vingrys, Algis J.; Kong, George; Martin, Keith R

doi:10.1186/s12886-017-0445-z

Cited by 19 publications

(17 citation statements)

References 6 publications

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“…Optic nerve head and retinal blood vessels integrity were found to be normal via fundus photography using an RV100-B RetinaVue™ 100 Imager Non-Mydriatic Retinal Camera (Welch Allyn, Skaneateles Falls, New York) ( Figure 6A). Furthermore, the patient's normal visual acuity and visual fields were tested with an iPadbased visual field perimetry application, Melbourne Rapid Fields -neural (MRF-n) [5][6][7][8][9][10] ( Figure 6B). However, on visuomotor tasks, the patient took significantly more time than controls of similar age.…”

Section: Figure 5: Immune Cell Graphmentioning

confidence: 99%

First Australian Case of Good Recovery of a COVID-19 Patient With Severe Neurological Symptoms Post Prolonged Hospitalization

Wijeratne¹,

Sales²,

Nguyen³

et al. 2020

Cureus

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A case of a 75-year-old man with COVID-19, severe neurological symptoms (acute stroke-like symptoms and signs and full recovery after a prolonged hospital stay), and intracranial hypertension is discussed with an in-depth review of his clinical features, biochemistry, haematology, highlighting the relationship between changes in neutrophil-lymphocyte ratio, C-reactive protein level, D-dimer level, and the clinical onset of acute ischemic stroke-like symptoms in the setting of COVID-19 and major neurological manifestations. This is the first such case reported in Australia to date. This case also illustrates the recovery of a patient with COVID-19 complicated with severe neurological symptoms (acute ischemic stroke-like symptoms) during the prolonged intensive care unit stay (at day 26) followed by slow neurorehabilitation and normal recovery from both respiratory and neurological involvement. The onset of acute stroke-like symptoms appears to be closely associated with changes of neutrophil-lymphocyte ratio and in C-reactive protein, and D-dimer levels.

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Section: Figure 5: Immune Cell Graphmentioning

confidence: 99%

First Australian Case of Good Recovery of a COVID-19 Patient With Severe Neurological Symptoms Post Prolonged Hospitalization

Wijeratne¹,

Sales²,

Nguyen³

et al. 2020

Cureus

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“…The present work is timely, as a number of other tablet‐based tests have recently been reported, designed to measure various more basic aspects of visual function, such as visual acuity, contrast sensitivity, visual fields, stereopsis, and colour vision . What distinguishes the tests described in the present study is that they are intended to measure ‘high‐level’ function on everyday tasks.…”

Section: Discussionmentioning

confidence: 99%

“…Methods for directly assessing performance on everyday visually‐guided tasks may be more appropriate for assessing the impact of vision loss. Furthermore there is substantial clinical interest in developing more ‘patient friendly’ tests that can quickly and easily assess real‐world visual function …”

Section: Introductionmentioning

confidence: 99%

“…Furthermore there is substantial clinical interest in developing more 'patient friendly' tests that can quickly and easily assess real-world visual function. [11][12][13][14][15] Our previous work suggests that face discrimination and visual search are two tasks that are particularly important to patients, and are often impaired in people with glaucoma [16][17][18][19][20][21] or age-related macular degeneration. [22][23][24] Currently, however, the equipment required for these tests is bulky, and the tests themselves often relatively time-consuming, making them appropriate only for use in research.…”

Section: Introductionmentioning

confidence: 99%

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Refinement and preliminary evaluation of two tablet‐based tests of real‐world visual function

Jones

Tigchelaar

Demaria

et al. 2019

Ophthalmic Physiologic Optic

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Purpose To describe, refine, evaluate, and provide normative control data for two freely available tablet‐based tests of real‐world visual function, using a cohort of young, normally‐sighted adults. Methods Fifty young (18–40 years), normally‐sighted adults completed tablet‐based assessments of (1) face discrimination and (2) visual search. Each test was performed twice, to assess test‐retest repeatability. Post‐hoc analyses were performed to determine the number of trials required to obtain stable estimates of performance. Distributions were fitted to the normative data to determine the 99% population‐boundary for normally sighted observers. Participants were also asked to rate their comprehension of each test. Results Both tests provided stable estimates in around 20 trials (~1–4 min), with only a further reduction of 14%–17% in the 95% Coefficient of Repeatability (CoR95) when an additional 40 trials were included. When using only ~20 trials: median durations for the first run of each test were 191 s (Faces) and 51 s (Search); test‐retest CoR95 were 0.27 d (Faces) and 0.84 s (Search); and normative 99% population‐limits were 3.50 d (Faces) and 3.1 s (Search). No participants exhibited any difficulties completing either test (100% completion rate), and ratings of task‐understanding were high (Faces: 9.6 out of 10; Search: 9.7 out of 10). Conclusions This preliminary assessment indicated that both tablet‐based tests are able to provide simple, quick, and easy‐to‐administer measures of real‐world visual function in normally‐sighted young adults. Further work is required to assess their accuracy and utility in older people and individuals with visual impairment. Potential applications are discussed, including their use in clinic waiting rooms, and as an objective complement to Patient Reported Outcome Measures (PROMs).

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“…We recently proposed one such test 11 : Eyecatcher, an open-source eye-movement perimeter that combines the portability of a tablet computer, [12][13][14][15][16][17][18] with the ease and comfort afforded by modern eyetracking and head-tracking technologies. [19][20][21][22][23] In brief, the patient sits in front of an ordinary tablet screen, and is asked simply to look at anything they see appear (a largely reflexive response, present from birth).…”

Section: Introductionmentioning

confidence: 99%

Using an open-source tablet perimeter (Eyecatcher) as a rapid triage measure for glaucoma clinic waiting areas

2020

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BackgroundGlaucoma services are under unprecedented strain. The UK Healthcare Safety Investigation Branch recently called for new ways to identify glaucoma patients most at risk of developing sight loss, and of filtering-out false-positive referrals. Here, we evaluate the feasibility of one such technology, Eyecatcher: a free, tablet-based ‘triage’ perimeter, designed to be used unsupervised in clinic waiting areas. Eyecatcher does not require a button or headrest: patients are simply required to look at fixed-luminance dots as they appear.MethodsSeventy-seven people were tested twice using Eyecatcher (one eye only) while waiting for a routine appointment in a UK glaucoma clinic. The sample included individuals with an established diagnosis of glaucoma, and false-positive new referrals (no visual field or optic nerve abnormalities). No attempts were made to control the testing environment. Patients wore their own glasses and received minimal task instruction.ResultsEyecatcher was fast (median: 2.5 min), produced results in good agreement with standard automated perimetry (SAP), and was rated as more enjoyable, less tiring and easier to perform than SAP (all p<0.001). It exhibited good separation (area under receiver operating characteristic=0.97) between eyes with advanced field loss (mean deviation (MD) < −6 dB) and those within normal limits (MD > −2 dB). And it was able to flag two thirds of false-positive referrals as functionally normal. However, eight people (10%) failed to complete the test twice, and reasons for this limitation are discussed.ConclusionsTablet-based eye-movement perimetry could potentially provide a pragmatic way of triaging busy glaucoma clinics (ie, flagging high-risk patients and possible false-positive referrals).

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Tablets at the bedside - iPad-based visual field test used in the diagnosis of Intrasellar Haemangiopericytoma: a case report

Cited by 19 publications

References 6 publications

First Australian Case of Good Recovery of a COVID-19 Patient With Severe Neurological Symptoms Post Prolonged Hospitalization

First Australian Case of Good Recovery of a COVID-19 Patient With Severe Neurological Symptoms Post Prolonged Hospitalization

Refinement and preliminary evaluation of two tablet‐based tests of real‐world visual function

Using an open-source tablet perimeter (Eyecatcher) as a rapid triage measure for glaucoma clinic waiting areas

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