Optimal time for post-operative refraction after uneventful cataract surgery

dc.contributor.advisorOberholzer, M.
dc.contributor.advisorKempen, E.
dc.contributor.authorBiddulph, Cara
dc.description.sponsorshipBackground: There is a great discrepancy in current literature as to when the correct time is to do a refraction for spectacles after cataract surgery. Although the current trend is to leave the patient as independent as possible without spectacles, most patients will still need spectacles for optimal vision, mostly for near activities like reading. Purpose: The main aim of this study was to determine when in the first six weeks after uneventful cataract surgery, the operated eye stabilises for the refraction of the new spectacles needed. Methodology: 25 participants from the same practice were included in this study. Four variables were measured at six visits (these visits took place before cataract surgery and then at one day, one week, two weeks, four weeks and lastly six weeks after cataract surgery) to acquire the data after uneventful (no complications occurred) cataract surgery. The four variables that were investigated, included the best corrected visual acuity (BCVA), central corneal thickness (CCT), central macula thickness (CMT) and the refraction. Stabilisation of these measured variables may indicate the optimal time for refraction. The data was analysed to determine the change of these variables consecutively over the six weeks that the study took place and to investigate the period for each variable to reach stabilisation. Results: Most participants (56%) had stable BCVA two weeks after uneventful cataract surgery. Most participants’ CMT (96%) returned to baseline values at one day after cataract surgery. Most participants CCT (68%) returned to baseline values one week after cataract surgery, respectively. The refraction stabilised two weeks after uneventful cataract surgery. Conclusion: The CMT had no effect on the refraction throughout the six weeks of the study. The CCT was found to stabilise one week after cataract surgery. The BCVA and refraction stabilised two weeks after uneventful cataract surgery, indicating that spectacles can be prescribed as early as two weeks after uneventful cataract surgery.en_ZA
dc.publisherUniversity of the Free Stateen_ZA
dc.rights.holderUniversity of the Free Stateen_ZA
dc.subjectDissertations (M. Optometry (Optometry))--University of the Free State, 2020en_ZA
dc.subjectCataract surgeryen_ZA
dc.subjectUneventful cataract surgeryen_ZA
dc.subjectOperated eye stabilisesen_ZA
dc.titleOptimal time for post-operative refraction after uneventful cataract surgeryen_ZA
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