Intraoperative prediction of refractive error using a prototype surgical aberrometer

Uday K Bhatt, Sunil Shah, Harminder Dua, James Wolffsohn

Research output: Contribution to journalConference abstractpeer-review


Purpose: To ascertain the agreement level between intra-operative refraction using a prototype surgical Hartmann-Shack aberrometer and subjective refraction a month later. Methods: Fifty-four consecutive patients had their pseudophakic refractive measured with the aberrometer intra-operatively at the end of their cataract surgery. A masked optometrist performed subjective refraction 4 weeks later. The two sets of data were then analysed for correlation. Results: The mean spherical equivalent was −0.14 ± 0.37 D (Range: −1.41 to +1.72 D) with the prototype aberrometer and −0.34 ± 0.32 (−1.64 to +1.88 D) with subjective refraction. The measurements positively correlated to a very high degree (r =+0.81, p < 0.01). In 84.3% of cases the two measurements were within 0.50D of each other. Conclusion: The aberrometer can verify the aimed refractive status of the eye intraoperatively to avoid a refractive surprise. The aberrometer is a useful tool for real time assessment of the ocular refractive status.
Original languageEnglish
Article number1406
Pages (from-to)32
Number of pages1
JournalClinical and Experimental Ophthalmology
Issue numberS1
Early online date30 Oct 2014
Publication statusPublished - 30 Nov 2014
EventRANZCO 46th annual scientific congress - Brisbane, Australia
Duration: 22 Nov 201426 Nov 2014

Bibliographical note

Special Issue: The Royal Australian and New Zealand College of Ophthalmologists, 46th Annual Scientific Congress, 22–26 November 2014.


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