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Y Xiong, Y Lu, X Qu, F Xue, R Chu, JC He; Investigation of Wavefront Aberrations for Patients With Cataract Surgery . Invest. Ophthalmol. Vis. Sci. 2002;43(13):387.
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© ARVO (1962-2015); The Authors (2016-present)
Purpose: To investigate the optical properties of the post-operative cataract eyes by measuring wavefront aberrations post-operatively for cataract patients and comparing the aberrations with those for normal eyes. Methods: Routine phacoemulsification (Alcon Legacy 2000) and IOL implantation (Alcon corneal) were performed for 21 eyes of 19 cataract patients aging from 15 to 73 yrs old (mean = 51.1). Wavefront aberrations for the patients post-operatively and for 20 eyes of 10 normal subjects with the age matched were measured using an aberrometer (SuZhou BriteEye Model WFA 1000), which provides wavefront aberration map and 35 terms of Zernike aberrations in a 6.2 mm natural pupil. Three measurements were taken for each eye, and the RMS values for overall wavefront error and Zernike aberrations in each order (2nd to 7th orders) were calculated. Results: There was a substantial individual variation in the RMS values of post-operative overall wavefront aberrations for the 21 cataract eyes (ranged from 0.37 to 2.86 micron, mean = 1.37 micron). Mean RMS value for cataract patients was significantly greater than that for normal subjects (t=4.58, p<0.00025). The differences in RMS values between cataract eyes and normal eyes were found significant for all of the 6 orders of Zernike aberrations also (minimum t = 3.27 and p<0.001). Conclusion: Results indicate that patients with cataract surgery have stronger wavefront aberrations than normal eyes. Measurement of wavefront aberrations provides useful information for improving cataract surgery.
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