scholarly journals The evaluation of a novel tool to remotely assess visual acuity in chronic uveitis patients during the COVID-19 pandemic

2021 ◽  
Author(s):  
J.L.J. Claessens ◽  
J. van Egmond ◽  
J.H. de Boer ◽  
R.P.L. Wisse
Keyword(s):  
Visual Acuity ◽  
Healthy Population ◽  
Index Test ◽  
Cross Sectional ◽  
Web Based ◽  
Promising Tool ◽  
Accuracy Study ◽  
Visual Acuity Test ◽  
Acuity Test ◽  
The Web

AbstractBackgroundRestrictions due to the recent COVID-19 pandemic catalysed the deployment of telehealth solutions. A novel web‐based visual acuity test, validated in a healthy population, may be of great value in the follow‐up of uveitis patients.ObjectiveTo determine the measurement accuracy of the unsupervised remote Easee web‐based visual acuity test in uveitis patients, when compared to a conventional in‐hospital assessment.MethodsCross‐sectional diagnostic accuracy study. Between April 2020 and September 2020, consecutive adult uveitis patients were invited for the web‐based visual acuity test (index test) within two weeks prior to their conventional in‐hospital assessment (reference test).ResultsA total of 269 patients were invited by mail, of whom 84 visited the website (31%). Ultimately 98 eyes met the criteria for statistical analysis. The mean difference between the two tests was low and non‐significant: 0.02 logMAR (SD 0.12, P = 0.085). The 95% limits of agreement ranged from ‐0.21 to 0.26 logMAR. No relevant differences were identified in clinical characteristics between subgroups with a good performance (i.e. difference between the tests 0.15 logMAR) or underperformance (i.e. difference >0.15 logMAR) on the web‐based test.ConclusionThe web‐based visual acuity test is a promising tool to remotely assess visual acuity in the majority of uveitis patients, especially relevant when access to ophthalmic care is limited. No association between patient‐ or uveitis‐related variables and (under)performance of the test were identified. These outcomes underline the potential of remote vision testing in other common ophthalmic conditions. A proper implementation of this web‐based tool in health care could be of great value for revolutionizing teleconsultations.

scholarly journals The evaluation of a web-based tool for measuring the uncorrected visual acuity and refractive error in keratoconus eyes: A method comparison study

PLoS ONE ◽  
2021 ◽  
Vol 16 (8) ◽  
pp. e0256087
Author(s):  
Marc B. Muijzer ◽  
Janneau L. J. Claessens ◽  
Francesco Cassano ◽  
Daniel A. Godefrooij ◽  
Yves F. D. M. Prevoo ◽  
...  
Keyword(s):  
Visual Acuity ◽  
Refractive Error ◽  
Mean Difference ◽  
Index Test ◽  
Spherical Equivalent ◽  
Reference Test ◽  
Web Based ◽  
Manifest Refraction ◽  
Uncorrected Visual Acuity ◽  
The Web

Purpose To evaluate the outcome of a web-based digital assessment of visual acuity and refractive error, compared to a conventional supervised assessment, in keratoconus patients with complex refractive errors. Material and methods Keratoconus patients, aged 18 to 40, with a refractive error between -6 and +4 diopters were considered eligible. An uncorrected visual acuity and an assessment of refractive error was taken web-based (index test) and by manifest refraction (reference test) by an optometrist. Corrected visual acuity was assessed with the prescription derived from both the web-based tool and the manifest refraction. Non-inferiority was defined as the 95% limits-of-agreement (95%LoA) of the differences in spherical equivalent between the index and reference test not exceeding +/- 0.5 diopters. Agreement was assessed by a Bland-Altman analyses. Results A total of 100 eyes of 50 patients were examined. The overall mean difference of the uncorrected visual acuity measured -0.01 LogMAR (95%LoA:-0.63–0.60). The variability of the differences decreased in the better uncorrected visual acuity subgroup (95%LoA:-0.25–0.55). The overall mean difference in spherical equivalent between the index and reference test exceeded the non-inferiority margin: -0.58D (95%LoA:-4.49–3.33, P = 0.008). The mean differences for myopic and hyperopic subjects were 0.09 diopters (P = 0.675) and -2.06 diopters (P<0.001), respectively. The corrected visual acuities attained with the web-based derived prescription underachieved significantly (0.22±0.32 logMAR vs. -0.01±0.13 LogMAR, P <0.001). Conclusions Regarding visual acuity, the web-based tool shows promising results for remotely assessing visual acuity in keratoconus patients, particularly for subjects within a better visual acuity range. This could provide physicians with a quantifiable outcome to enhance teleconsultations, especially relevant when access to health care is limited. Regarding the assessment of the refractive error, the web-based tool was found to be inferior to the manifest refraction in keratoconus patients. This study underlines the importance of validating digital tools and could serve to increase overall safety of the web-based assessments by better identification of outlier cases.

scholarly journals A novel computerized visual acuity test in children

2007 ◽  
Vol 11 (1) ◽  
pp. 92
Author(s):  
Jeong-Min Hwang ◽  
Young Joo Shin ◽  
In Bum Lee ◽  
Won Ryang Wee ◽  
Jin Hak Lee
Keyword(s):  
Visual Acuity ◽  
Visual Acuity Test ◽  
Acuity Test

Suggested Systems for the Uniform Illumination of Visual Acuity Test Charts

1955 ◽  
Vol 116 (1) ◽  
pp. 37-42 ◽  
Author(s):  
Lawrence T. Odland ◽  
Louise L. Sloan
Keyword(s):  
Visual Acuity ◽  
Uniform Illumination ◽  
Visual Acuity Test ◽  
Acuity Test

scholarly journals Improvement in Visual Acuity Test Results With Examiner's Intervention in the Test for Patients With Idiopathic Epimacular Membrane

2012 ◽  
Vol 41 (0) ◽  
pp. 171-176
Author(s):  
Yuriko Hanada ◽  
Fumiatsu Maeda ◽  
Kazuko Haruishi ◽  
Ichiro Watanabe ◽  
Junichi Kiryu
Keyword(s):  
Visual Acuity ◽  
Test Results ◽  
Visual Acuity Test ◽  
Acuity Test

scholarly journals Interformat Reliability of Web-Based Parent-Rated Questionnaires for Assessing Neurodevelopmental Disorders Among Preschoolers: Cross-sectional Community Study

10.2196/20172 ◽  
2021 ◽  
Vol 4 (1) ◽  
pp. e20172
Author(s):  
Masanori Tanaka ◽  
Manabu Saito ◽  
Michio Takahashi ◽  
Masaki Adachi ◽  
Kazuhiko Nakamura
Keyword(s):  
Neurodevelopmental Disorders ◽  
Rating Scale ◽  
Developmental Coordination Disorder ◽  
Intraclass Correlation ◽  
Correlation Coefficients ◽  
Autism Spectrum ◽  
Cross Sectional ◽  
Web Based ◽  
Developmental Health ◽  
The Web

Background Early detection and intervention for neurodevelopmental disorders are effective. Several types of paper questionnaires have been developed to assess these conditions in early childhood; however, the psychometric equivalence between the web-based and the paper versions of these questionnaires is unknown. Objective This study examined the interformat reliability of the web-based parent-rated version of the Autism Spectrum Screening Questionnaire (ASSQ), Attention-Deficit/Hyperactivity Disorder Rating Scale (ADHD-RS), Developmental Coordination Disorder Questionnaire 2007 (DCDQ), and Strengths and Difficulties Questionnaire (SDQ) among Japanese preschoolers in a community developmental health check-up setting. Methods A set of paper-based questionnaires were distributed for voluntary completion to parents of children aged 5 years. The package of the paper format questionnaires included the ASSQ, ADHD-RS, DCDQ, parent-reported SDQ (P-SDQ), and several additional demographic questions. Responses were received from 508 parents of children who agreed to participate in the study. After 3 months, 300 parents, who were among the initial responders, were randomly selected and asked to complete the web-based versions of these questionnaires. A total of 140 parents replied to the web-based format and were included as a final sample in this study. Results We obtained the McDonald ω coefficients for both the web-based and paper formats of the ASSQ (web-based: ω=.90; paper: ω=.86), ADHD-RS total and subscales (web-based: ω=.88-.94; paper: ω=.87-.93), DCDQ total and subscales (web-based: ω=.82-.94; paper: ω=.74-.92), and P-SDQ total and subscales (web-based: ω=.55-.81; paper: ω=.52-.80). The intraclass correlation coefficients between the web-based and paper formats were all significant at the 99.9% confidence level: ASSQ (r=0.66, P<.001); ADHD-RS total and subscales (r=0.66-0.74, P<.001); DCDQ total and subscales (r=0.66-0.71, P<.001); P-SDQ Total Difficulties and subscales (r=0.55-0.73, P<.001). There were no significant differences between the web-based and paper formats for total mean score of the ASSQ (P=.76), total (P=.12) and subscale (P=.11-.47) mean scores of DCDQ, and the P-SDQ Total Difficulties mean score (P=.20) and mean subscale scores (P=.28-.79). Although significant differences were found between the web-based and paper formats for mean ADHD-RS scores (total: t132=2.83, P=.005; Inattention subscale: t133=2.15, P=.03; Hyperactivity/Impulsivity subscale: t133=3.21, P=.002), the effect sizes were small (Cohen d=0.18-0.22). Conclusions These results suggest that the web-based versions of the ASSQ, ADHD-RS, DCDQ, and P-SDQ were equivalent, with the same level of internal consistency and intrarater reliability as the paper versions, indicating the applicability of the web-based versions of these questionnaires for assessing neurodevelopmental disorders.

scholarly journals Automated visual acuity evaluation based on preferential looking technique and controlled with remote eye tracking

2020 ◽  
Author(s):  
Nika Vrabič ◽  
Bor Juroš ◽  
Manca Tekavčič Pompe
Keyword(s):  
Visual Acuity ◽  
Eye Tracking ◽  
Healthy Children ◽  
Eye Tracker ◽  
Preferential Looking ◽  
Spatial Frequencies ◽  
Average Luminance ◽  
Visual Acuity Test ◽  
Acuity Test ◽  
Preverbal Children

Objective. To establish an automated visual acuity test (AVAT) for infants, based on preferential looking technique and controlled with remote eye tracking. To validate the AVAT in a group of healthy children. To compare AVAT visual acuity (VA) values with corresponding VA values, acquired with standard tests (ST). Methods. ST, adapted for age (Keeler acuity cards in preverbal children, LEA symbols in verbal children), was performed to obtain monocular VA in a group of 36 healthy children. During AVAT, nine different stimuli with grating circles that matched spatial frequencies of nine Keeler acuity cards (raging between 0.29–14.5 cycles per degree) were projected on a screen. Three repetitions of each stimulus were showed during nine-second intervals, interchanging with an attention grabber. The remote eye tracker was used to evaluate the proportion of time a child spent looking at each grating circle compared to a homogenous grey background that matched the grating stimuli in average luminance. From this proportion of time child's binocular VA was evaluated. Results. 97 % (35/36) of healthy children successfully completed ST and AVAT. There was an agreement between the results of a ST and AVAT, Lin’s concordance coefficient being 0,53 (95% CI= 0,31–0,72). A tendency was observed towards VA overestimation on AVAT for children with VA> 0.4 logMAR on ST and towards VA underestimation on AVAT for children with VA ≤ 0.4 logMAR on ST. Conclusions. AVAT requires a minimally skilled investigator. The evaluation of better eye monocular VA on ST and binocular VA on AVAT were comparable for healthy children.

Evaluation of the postural balance and visual perception in young adults with acute sleep deprivation

2020 ◽  
Vol 30 (6) ◽  
pp. 383-391
Author(s):  
Isa Tuncay Batuk ◽  
Merve Ozbal Batuk ◽  
Songul Aksoy
Keyword(s):  
Visual Acuity ◽  
Young Adults ◽  
Sleep Deprivation ◽  
Vestibular System ◽  
Postural Balance ◽  
Significant Difference ◽  
Perception Time ◽  
Visual Acuity Test ◽  
Acute Sleep Deprivation ◽  
Acuity Test

BACKGROUND/OBJECTIVE: Few studies have suggested a relationship between vestibular system and sleep deprivation. The aim of the present study is to investigate the effects of acute sleep deprivation lasting 24 hours or more on the postural balance and the visual abilities related to the vestibular system in healthy young adults. METHODS: Thirty-one healthy young adults (8 males, 23 female; ages 18– 36 years) who had experienced at least 24 hours of sleep deprivation were included in the study. Subjects made two visits to the test laboratory. One visit was scheduled during a sleep deprivation (SD) condition, and the other was scheduled during a daily life (DL) condition. Five tests— the Sensory Organization Test (SOT), Static Visual Acuity Test (SVA), Minimum Perception Time Test (mPT), Dynamic Visual Acuity Test (DVA), and Gaze Stabilization Test (GST)— were performed using a Computerized Dynamic Posturography System. RESULTS: A statistically significant difference was found between SD and DL measurements in somatosensorial (p = 0.003), visual (p = 0.037), vestibular (p = 0.008) ratios, and composite scores (p = 0.001) in SOT. The mPT results showed a statistically significant difference between SD and DL conditions (p = 0.001). No significant difference was found between SD and DL conditions in the comparison of the mean SVA (p = 0.466), DVA (p = 0.192), and GST head velocity values (p = 0.160). CONCLUSIONS: Sleep deprivation has a considerable impact on the vestibular system and visual perception time in young adults. Increased risk of accidents and performance loss after SD were thought to be due to the postural control and visual processing parameters rather than dynamic visual parameters of the vestibular system.

Sign in / Sign up

Export Citation Format

Share Document