Loading...
Scientific evidence to support the art of prescribing spectacles. Identification of the clinical scenarios in which optometrists apply partial prescribing techniques and the quantification of spectacle adaption problems.
Howell-Duffy, Christopher J.
Howell-Duffy, Christopher J.
Publication Date
2013-12-06
End of Embargo
Supervisor
Rights
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
Bradford School of Optometry and Vision Science
Awarded
2013
Embargo end date
Collections
Additional title
Abstract
Although experiential prescribing maxims are quoted in some optometric
textbooks their content varies significantly and no direct research evidence
was available to support their use. Accordingly in chapters 2 and 3, the
uses of several potential prescribing rules were investigated in the UK
optometric profession. Our results indicated that the subjective refraction
result exerted a strong hold on the prescribing outcome with 40-85% of
optometrists prescribing the subjective result in a variety of scenarios. The
finding that after 40 years qualified, experienced optometrists were three
times more likely to suggest a partial prescription was an important
discovery that provides significant support for the prescribing rules
suggested by various authors. It would also appear from the results of the
retrospective evaluation of the ¿if it ain¿t broke, don¿t fix it¿ clinical maxim in
Chapter 4 that spectacle dissatisfaction rates could be reduced by
between 22 to 42% depending on how strictly the maxim is interpreted by
the practitioner. Certainly an ¿if it ain¿t broke, don¿t fix it much¿ maxim was
suggested as being particularly appropriate. Chapter 5 included a reanalysis
of previously published data that found no change in falls rate
after cataract surgery to investigate any influence of refractive correction
change and /or visual acuity change on falls rate. Unfortunately these data
were not sufficiently powered to provide significant results. In chapter 6, a
spectacle adaptation questionnaire (SAQ) was developed and validated
using Rasch analysis. Initial studies found no differences in SAQ with
gender or age.
Version
Citation
Link to publisher’s version
Link to published version
Link to Version of Record
Type
Thesis
Qualification name
PhD