CCTV provision produced significantly greater improvement in reading speed for 1.3M print than eccentric viewing training in adults with age-related macular degeneration¶
Claim · All claims
Evidence · 1 study · causalr1·q2
Currency · newest study 2017 · not yet checked against its sources · not reviewed by a person
Subclaims¶
Reading the evidence codes
q is the design tier, i the impact, n the sample, and the kind with its r
the rigour judged within that kind: what each code means.
This claim: no standardized effect is recorded in observations/ for it yet, so no benchmark reading is possible.
q2 i? Reading speed for 1.3M print improved significantly within the CCTV group (p = 0.005) but not within the eccentric viewing training group (p = 0.28), and the between-group difference in change was significant (p = 0.04). → Leat et al. 2017
Evidence¶
Leat et al. 2017¶
Susan J. Leat, Francis Fengqin Si, Deborah Gold, Dawn Pickering, Keith Gordon, and William Hodge. (2017). The Experience of a Randomized Clinical Trial of Closed-Circuit Television Versus Eccentric Viewing Training for People with Age-Related Macular Degeneration. Journal of Visual Impairment & Blindness. https://clinicaltrials.gov/ct2/show/NCT00971464
q2 · i? · causal · r1
Randomized parallel-arm trial at CNIB with 10 completers (4 eccentric viewing training, 6 CCTV), all previously given basic low vision care and optical devices. The primary outcome showed "a significant difference between the groups ( p /H110050.04)" in pre-post change in 1.3M reading speed.
"Within the CCTV group, there was a significant improvement at the outcome visit compared to the baseline (paired t-test, p /H110050.005), but not within the eccentric viewing training group ( p /H110050.28). A two-sample t-test of the changes (pre-post) showed a significant difference between the groups ( p /H110050.04)."
Discussion¶
Learner Variables¶
- Reading Fluency — outcome: instruction changes it
Related Claims¶
- CCTV group read utility bill information significantly faster at outcome, but the between-group difference in change was not significant — related
- CCTV produced much larger percentage increases in reading speed (86% for 1.3M, 74% for 1M) than eccentric viewing training (16%, not significant) — related
- Eccentric viewing training significantly improved near visual acuity with participants' own eyeglasses — related
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