
Optometric Education
ASCOTECH
Volume 25, Number
3
Evidence-Based
Optometric Practice and Education
William M. Dell, O.D.,
M.P.H.
Optometric practice
continues to change. Some of what we practice today is not based on sound
evidence. We continue to face an exploding volume of literature, rapid
introduction of new technologies, deepening concern about growing health
care costs, and increasing attention to the quality and outcomes of health
care. One change occurring in medical practice today is in the way in
which clinicians evaluate and use the medical literature to more effectively
guide physician practice. This shift is so profound as to appropriately
be labeled a paradigm shift. The foundation for this shift lies in the
advances in clinical research over the last 30 years and the need to demonstrate
clinical efficacy in both diagnostic and treatment protocols by the use
of randomized clinical trials. This new paradigm is known as evidence-based
medicine. For optometric practice, we would, instead, employ the term,
"evidence-based optometry."
This new philosophy
is based on an awareness of the limitations of traditional determinants
of clinical decisions and deals with the uncertainties of clinical practice.
The shift to evidenced-based practice de-emphasizes intuition, unsystematic
clinical experience, and pathophysiologic rationale as sufficient grounds
for clinical decision-making. It stresses the examination of evidence
from carefully-controlled clinical research and introduces the need to
include in our optometric educational process new skills required of the
optometrist. These skills include efficient literature searching, and
the application of formal rules of evidence in evaluating the clinical
literature. Integrating external evidence with daily clinical experience
caring for patients, and applying the results judiciously is one of evidenced-based
optometry's greatest challenges.
As optometric educators,
it is obvious that we need to keep abreast of these technological changes
and how they impact our institution and how we teach, deliver and model
patient care. This column in Optometric Education is dedicated to that
task. My erstwhile colleague, Dominick Maino, OD, M.Ed., professor, Illinois
College of Optometry, and I will attempt to inform you and, just as importantly,
stimulate your own interest in the various areas of technology that we
will address. The column will present three to five abstracts on a particular
subject matter (e.g. distance education; telemedicine; asynchronous learning;
computer laboratories; educational assessment, etc.) and will be preceded
by an introduction and followed by a concluding summary. Dr. Maino and
I will alternate issues as lead columnist but we will collaborate on each
issue.
Today's optometric
graduates must be educated in how to access, evaluate and interpret the
optometric and medical literature. These skills include proposals to apply
the principles of epidemiology to day-to-day clinical practice. More and
more journals have adopted a more informative style of abstract presentation
in which the study design and methods receive greater emphasis. Practice
guidelines based on rigorous methodological review of the available evidence
are becoming increasingly common.
Does evidence-based
practice improve patient outcomes? The answer to this question is, in
essence, the "proof of the pudding" for this new paradigm. Unfortunately,
the proof is no more achievable for the new paradigm than it is for the
old as there are no long-term randomized trials of traditional and evidenced-based
medical education. There are a few short-term studies, however, that seem
to indicate that the teaching of evidence-based practice may help graduates
stay up to date, a critical element in the quality of care.
The purpose of this
article is not to present a formal and thorough review of evidence-based
practice but rather to introduce the concepts to the reader. Evidence-based
optometry will require new skills for the optometrist, skills which our
schools and colleges of optometry should be equipped to teach. While strategies
for inculcating the principles of evidence-based optometry remain to be
refined, initial experience has revealed a number of effective approaches.
Incorporating these practices into optometric education will result in
more rapid dissemination and integration of the new paradigm into optometric
practice.
In concert with the
overlying technology theme of this column, the reader is directed to on-line
resources for further immersion in the subject. Following is a list, intentionally
not exhaustive, of web sites related to the teaching and practice of evidence-based
medicine/optometry. Explore!
1. National Guideline
Clearinghouseâ„¢ (NGC), a public resource for evidence-based clinical
practice guidelines. NGC is sponsored by the Agency for Healthcare Research
and Quality (formerly the Agency for Health Care Policy and Research)
in partnership with the American Medical Association and the American
Association of Health Plans
http://www.guidelines.gov/index.asp
2. An Introduction
to Information Mastery
Department of Family Practice, College of Human Medicine Michigan State
University This is a Web-based course that introduces the basic concepts
of Information Mastery, Evidence-Based Medicine (EBP), and critical appraisal
of the medical literature.
http://www.poems.msu.edu/InfoMastery/
3.How to Read a
Medical Journal Article, by Steve Simon
http://www.cmh.edu/stats/journal.htm
4. Evidence-Based
Medicine: What It Is, and What Is Isn't
http://cebm.jr2.ox.ac.uk/
5. Centre for
Evidenced Based Medicine
http://cebm.jr2.ox.ac.uk/
6. CASP - Critical
Appraisal Skills Programme
CASP is a UK project that aims to help health service decision makers
and those that seek to influence the decision makers develop skills to
find, critically appraise and change practice in line with evidence of
effectiveness. These skills promote the delivery of evidence-based healthcare.
CASP introduces people to the ideas of evidence-based healthcare and,
through critical appraisal of systematic reviews, introduces people to
the related ideas of the Cochrane Collaboration.
http://www.phru.org/casp/
7. Centre for Clincial
Effectiveness
The Centre for Clinical Effectiveness objective is to enhance patient
outcomes through the clinical application of the best available evidence
about treatments.
http://www.med.monash.edu.au/publichealth/cce/
8. The Cochrane
Collaboration:Eyes and Vision Group
An international network of individuals working to prepare, maintain and
promote access to systematic reviews of interventions to treat or prevent
eye diseases or visual impairment.
http://www.archie.ucl.ac.uk/
9. Evidenced Based
Medicine Toolkit
This collection of tools for identifying, assessing and applying relevant
evidence for better health care decision-making is based on the work of
the Evidence Based Medicine Working Group"
http://www.arc/hie.ucl.ac.uk/
10. How to Teach
Evidence-based Clinical Practice, 2000
McMaster University Department of Clinical Epidemiology and Biostatistics
have assembled sets of readings dealing with evidence-based medicine and
critical appraisal issues in therapy, diagnosis, prognosis, harm, overviews
and economic analysis. Some materials, complete with checklists and cribsheets
is available on the Internet, and may be downloaded to support Critical
Appraisal skills programmes locally.
http://hiru.mcmaster.ca/ebm/
11. Evidence-Based
Medicine Reviews
Ovid's Evidence-Based Medicine Reviews (EBMR) is a database designed for
use by clinicians, researchers and students. Reflecting the current practice
in medicine to base clinical decisions on accumulated evidence from the
primary medical literature, Evidence-Based Medicine Reviews provides content
from two premier sources: the Cochrane Library and Best Evidence.
http://www.ovid.com/
12. Medical SmartSearch
This is a single gateway that attempts to provide references to answer
clinical questions around diagnosis, aetiology, prognosis and therapy
(plus physical findings, adverse treatment effects and screening/prevention)
by searching only high-quality sources.
http://smartsearch.uthscsa.edu/cgi-bin/smartsearch.exe
Contact with Your
Ideas:
Dr. William M. Dell Bdell@pco.edu
Or Dr. Dominick Maino Dmaino@eyecare.ico.edu
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