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)
John J TaylorChristine Dickinson

Abstract

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. 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. 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...Continue Reading

References

Jan 1, 1991·Eye·G G McIlwaineG N Dutton
Aug 1, 1967·Journal of Chronic Diseases·D Schwartz, J Lellouch
May 1, 1997·Optometry and Vision Science : Official Publication of the American Academy of Optometry·G R WatsonS Long
Feb 17, 1998·The British Journal of Psychiatry : the Journal of Mental Science·F M Reischies, B Geiselmann
Jan 1, 2000·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·R HarperL Slater
Jul 12, 2002·Behavior Research Methods, Instruments, & Computers : a Journal of the Psychonomic Society, Inc·Ching-Fan Sheu
Jan 22, 2003·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·James S Wolffsohn, Rachael C Peterson
Dec 4, 2003·American Journal of Ophthalmology·Rachael C PetersonJohn Lowe
Jul 2, 2004·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Louise E CulhamGary S Rubin
Jul 27, 2005·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Michael D Crossland, Janet H Silver
Mar 21, 2006·The British Journal of Ophthalmology·G A HahnS Trauzettel-Klosinski
Aug 16, 2006·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Ahalya Subramanian, Shahina Pardhan
Aug 19, 2007·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Joan A Stelmack, Robert W Massof
Aug 29, 2007·Investigative Ophthalmology & Visual Science·Chris Dickinson, Maggie Shim
Aug 13, 2008·International Journal of Behavioral Medicine·Bruce W SmithJennifer Bernard
Jan 15, 2009·Acta Ophthalmologica·Nhung Xuan NguyenSusanne Trauzettel-Klosinski
Apr 8, 2009·Journal of Clinical Epidemiology·Kevin E ThorpeKalipso Chalkidou
Jul 6, 2010·The British Journal of Ophthalmology·H CourtT H Margrain
Mar 15, 2011·Journal of AAPOS : the Official Publication of the American Association for Pediatric Ophthalmology and Strabismus·Kimberly MerrillC Gail Summers
Mar 23, 2011·Investigative Ophthalmology & Visual Science·Praveen J PatelAdnan Tufail
Oct 25, 2011·Survey of Ophthalmology·Alison M BinnsTom H Margrain
Mar 20, 2012·Investigative Ophthalmology & Visual Science·Marloes C BurggraaffGer H M B van Rens
May 9, 2012·Investigative Ophthalmology & Visual Science·Marloes C BurggraaffGer H M B van Rens
Jun 5, 2012·Investigative Ophthalmology & Visual Science·Susanne Trauzettel-KlosinskiUNKNOWN IReST Study Group
Aug 15, 2014·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·John TaylorChris Dickinson

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Citations

Apr 18, 2018·The Cochrane Database of Systematic Reviews·Gianni VirgiliJennifer R Evans
Jul 19, 2018·Clinical & Experimental Optometry : Journal of the Australian Optometrical Association·Mae Fa ChongSharon A Bentley
Sep 1, 2018·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Micaela R GobeilleNicole C Ross
Jan 11, 2018·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·M OeverhausB Schaperdoth-Gerlings
Jan 28, 2020·The Cochrane Database of Systematic Reviews·Ruth Ma van NispenGer Hmb van Rens
Jan 13, 2018·Der Ophthalmologe : Zeitschrift der Deutschen Ophthalmologischen Gesellschaft·N Celik, K Rohrschneider
Feb 28, 2018·Ophthalmic & Physiological Optics : the Journal of the British College of Ophthalmic Opticians (Optometrists)·Micaela GobeilleNicole C Ross
May 8, 2020·BMC Ophthalmology·Michael OeverhausAnja Eckstein
Apr 9, 2021·Optometry and Vision Science : Official Publication of the American Academy of Optometry·Etty BittonWalter Wittich

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