The influence of adaptation on spectacle wear
Hughes, Amy R.
Hughes, Amy R.
Publication Date
End of Embargo
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The University of Bradford theses are licenced under a Creative Commons Licence.
Peer-Reviewed
Open Access status
Accepted for publication
Institution
University of Bradford
Department
School of Optometry and Vision Science. Faculty of Life Sciences
Awarded
2023
Embargo end date
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Additional title
Investigation into how different aspects of adaptation influence spectacle wear and how this might inform the management of refractive correction with spectacles in clinical practice
Abstract
Limited evidence exists to support prescribing decisions to avoid adaptation problems with new spectacles. Evidence is lacking on how adaptation influences patients’ use of spectacles and the prescriptions they prefer.
Chapter 3 investigated whether habitual astigmatism influenced the impact of lens-induced astigmatism on distance visual acuity. Results demonstrated how participants’ natural astigmatism may influence the results of astigmatism studies and suggests patients are strongly adapted to their habitual astigmatism axis. The latter supports modifying large cylinder axis changes to aid adaptation.
Chapter 4 evaluated factors that predict preference and satisfaction with new spectacles. Best corrected visual acuity was not a useful predictor, while ease of adaptation was the strongest predictor. This finding supports prescribing for ease of adaptation and comfort rather than best corrected visual acuity.
Chapter 5 considered why people drive without their spectacles. Although participants recognised that drivers had a responsibility to drive with safe vision, they didn’t always do this. The study highlighted the importance of appropriate questioning and counselling about driving during the eye examination.
Chapter 6 explored experiences of spectacle adaptation and the effect on wearing habits. Four adaptation types were identified and trust in the optometrist and clear advice supported patients in adapting to spectacles.
Chapter 7 examined the factors that influence distance spectacle wear in older people in England. Substantial numbers of both emmetropes and pseudophakes wore their distance vision correction full time, and lens type was the strongest predictor of increased distance vision wear.
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Type
Thesis
Qualification name
PhD