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Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial. / Taylor, John J.; Bambrick, Rachel; Brand, Andrew et al.
In: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists), Vol. 37, No. 4, 27.06.2017, p. 370-384.

Research output: Contribution to journalArticlepeer-review

HarvardHarvard

Taylor, JJ, Bambrick, R, Brand, A, Bray, N, Dutton, M, Harper, RA, Hoare, Z, Ryan, B, Edwards, RT, Waterman, H & Dickinson, C 2017, 'Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial', Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists), vol. 37, no. 4, pp. 370-384. https://doi.org/10.1111/opo.12379

APA

Taylor, J. J., Bambrick, R., Brand, A., Bray, N., Dutton, M., Harper, R. A., Hoare, Z., Ryan, B., Edwards, R. T., Waterman, H., & Dickinson, C. (2017). Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial. Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists), 37(4), 370-384. https://doi.org/10.1111/opo.12379

CBE

Taylor JJ, Bambrick R, Brand A, Bray N, Dutton M, Harper RA, Hoare Z, Ryan B, Edwards RT, Waterman H, et al. 2017. Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial. Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 37(4):370-384. https://doi.org/10.1111/opo.12379

MLA

Taylor, John J. et al. "Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial". Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 2017, 37(4). 370-384. https://doi.org/10.1111/opo.12379

VancouverVancouver

Taylor JJ, Bambrick R, Brand A, Bray N, Dutton M, Harper RA et al. Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision: a randomised crossover trial. Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 2017 Jun 27;37(4):370-384. Epub 2017 May 12. doi: 10.1111/opo.12379

Author

Taylor, John J. ; Bambrick, Rachel ; Brand, Andrew et al. / Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision : a randomised crossover trial. In: Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists). 2017 ; Vol. 37, No. 4. pp. 370-384.

RIS

TY - JOUR

T1 - Effectiveness of portable electronic and optical magnifiers for near vision activities in low vision

T2 - a randomised crossover trial

AU - Taylor, John J.

AU - Bambrick, Rachel

AU - Brand, Andrew

AU - Bray, Nathan

AU - Dutton, Michelle

AU - Harper, Robert A

AU - Hoare, Zoe

AU - Ryan, Barbara

AU - Edwards, Rhiannon T

AU - Waterman, Heather

AU - Dickinson, Christine

N1 - © 2017 The Authors Ophthalmic & Physiological Optics © 2017 The College of Optometrists.

PY - 2017/6/27

Y1 - 2017/6/27

N2 - PURPOSE: To compare the performance of near vision activities using additional portable electronic vision enhancement systems (p-EVES), to using optical magnifiers alone, by individuals with visual impairment.METHODS: A total of 100 experienced optical aid users were recruited from low vision clinics at Manchester Royal Eye Hospital, Manchester, UK, to a prospective two-arm cross-over randomised controlled trial. Reading, performance of near vision activities, and device usage were evaluated at baseline; and at the end of each study arm (Intervention A: existing optical aids plus p-EVES; Intervention B: optical aids only) which was after 2 and 4 months.RESULTS: A total of 82 participants completed the study. Overall, maximum reading speed for high contrast sentences was not statistically significantly different for optical aids and p-EVES, although the critical print size and threshold print size which could be accessed with p-EVES were statistically significantly smaller (p < 0.001 in both cases). The optical aids were used for a larger number of tasks (p < 0.001), and used more frequently (p < 0.001). However p-EVES were preferred for leisure reading by 70% of participants, and allowed longer duration of reading (p < 0.001). During the study arm when they had a p-EVES device, participants were able to carry out more tasks independently (p < 0.001), and reported less difficulty with a range of near vision activities (p < 0.001).CONCLUSIONS: The study provides evidence that p-EVES devices can play a useful role in supplementing the range of low vision aids used to reduce activity limitation for near vision tasks.

AB - PURPOSE: To compare the performance of near vision activities using additional portable electronic vision enhancement systems (p-EVES), to using optical magnifiers alone, by individuals with visual impairment.METHODS: A total of 100 experienced optical aid users were recruited from low vision clinics at Manchester Royal Eye Hospital, Manchester, UK, to a prospective two-arm cross-over randomised controlled trial. Reading, performance of near vision activities, and device usage were evaluated at baseline; and at the end of each study arm (Intervention A: existing optical aids plus p-EVES; Intervention B: optical aids only) which was after 2 and 4 months.RESULTS: A total of 82 participants completed the study. Overall, maximum reading speed for high contrast sentences was not statistically significantly different for optical aids and p-EVES, although the critical print size and threshold print size which could be accessed with p-EVES were statistically significantly smaller (p < 0.001 in both cases). The optical aids were used for a larger number of tasks (p < 0.001), and used more frequently (p < 0.001). However p-EVES were preferred for leisure reading by 70% of participants, and allowed longer duration of reading (p < 0.001). During the study arm when they had a p-EVES device, participants were able to carry out more tasks independently (p < 0.001), and reported less difficulty with a range of near vision activities (p < 0.001).CONCLUSIONS: The study provides evidence that p-EVES devices can play a useful role in supplementing the range of low vision aids used to reduce activity limitation for near vision tasks.

KW - Adult

KW - Aged

KW - Aged, 80 and over

KW - Cross-Over Studies

KW - Eyeglasses

KW - Female

KW - Follow-Up Studies

KW - Humans

KW - Image Processing, Computer-Assisted

KW - Male

KW - Middle Aged

KW - Prospective Studies

KW - Reading

KW - Sensory Aids

KW - Vision, Low

KW - Visual Acuity

KW - Visually Impaired Persons

KW - Young Adult

KW - Journal Article

KW - Randomized Controlled Trial

U2 - 10.1111/opo.12379

DO - 10.1111/opo.12379

M3 - Article

C2 - 28497480

VL - 37

SP - 370

EP - 384

JO - Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)

JF - Ophthalmic & physiological optics : the journal of the British College of Ophthalmic Opticians (Optometrists)

SN - 0275-5408

IS - 4

ER -