Abstract
Purpose :
To determine the prevalence of significant High Order Aberrations (RMS ≥0.3 μm) in a myopic lasik seeking population and to identify the percentage of patients that will benefit from a wavefront-guided lasik treatment.
Methods :
60 eyes of 30 consecutive myopic lasik candidates between 18 and 39 years old were selected. Patients were examined for high order aberration (HOA) with Nidek OPD-Scan II aberrometer in a 6.0mm zone. The exam was performed in a dark room in noncycloplegic conditions.
Results :
Mean age in this study was 26.69 ± 5.92 years and 63% were female. Spherical equivalent was -3.12 ± 2.08 D. Average root-mean-square (RMS) in 5mm was 0.31μm ± 0.17. Total high order aberrations 0.369 ± 0.14 μm, coma 0.182 ± 0.11 μm, trefoil 0.239 ± 0.13 μm, spherical aberration 0.083 ± 0.07 μm, high order astigmatism 0.072 ± 0.05 μm. 55% of eyes presented a RMS of ≥0.3 μm. 66% of the patients had at least one eye with a RMS of ≥0.3 μm.
Conclusions :
Significant high order aberrations (RMS ≥0.3 μm) are more present in our LASIK patients that we seem to acknowledge. It is important to measure HOA in all our refractive patients to consider them for a wavefront-guided treatment.
This abstract was presented at the 2019 ARVO Annual Meeting, held in Vancouver, Canada, April 28 - May 2, 2019.