Aim: To determine whether UK optometrists routinely prescribe the subjective refraction result, or whether adjustments are made to aid patient comfort and adaptation. Method: A questionnaire was distributed by post and via the internet to UK optometrists. It incorporated eight case scenarios that included information regarding a patientÕs age, symptoms, habitual refractive correction, subjective refraction and any other pertinent clinical information. For each case, they were asked to indicate what refractive correction they would prescribe. Results: A total of 426 questionnaires were completed. In three cases with asymptomatic patients with negligible changes in visual acuity, about 45% of respondents indicated that they would prescribe the subjective refraction result and about 40% would prescribe the habitual correction. In a further case involving a 75 year-old asymptomatic patient, 55% prescribed the habitual correction. In two cases with large cylinder power changes, about 40% of respondents indicated they would partially prescribe the cylinder power. However, there was a large variation in the suggested modification of sphere powers to accompany the partial cylinder changes. Conclusion: A large sample of UK optometrists indicated that they would prescribe the subjective refraction result regardless of patient age, symptoms and difference between habitual correction and subjective refraction. Optometrists who partially prescribe, employ a wide variety of techniques including some that conflict with conventional teaching.
Purpose: A follow up study to investigate whether UK optometrists partially prescribe significant changes in refractive correction to assist patient adaption and whether various aspects of practitioner profiles are linked to the nature of these prescribing decisions. Method: A case scenario type questionnaire was distributed by post and via the internet to UK optometrists. Five case scenarios were described that included information on patient age, symptoms, habitual refractive correction (if any), subjective refraction and any other relevant clinical information. In each case respondents were asked to indicate and justify what refractive correction they would prescribe. Results: A total of 592 questionnaires were completed. Between 41% and 84% prescribed the subjective refraction result depending on the scenario. The likelihood of partial prescribing increased by 34% for every 10 years following qualification and thus after a typical 40 year career, respondents were now over three times more likely to partially prescribe. There were no other links with the propensity to partially prescribe. Conclusion: The subjective refraction result exerted a strong hold on the reported prescribing outcome, particularly for newly qualified optometrists. Partial prescribing was increasingly proposed the greater the number of years the respondent had been qualified. This suggests that with increasing exposure to patients who return dissatisfied with their spectacles, a greater appreciation of partial prescribing is gained. This link seems to be an important finding that provides significant support for the prescribing rules suggested by textbooks, which are not yet supported by research evidence.
The prescribing maxim "if it ain't broke, don't fix it" appears to have a role in reducing recheck eye examinations and improving patient satisfaction with new spectacles.
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