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Objective To investigate the cataract surgical implantation of different design artificial lens (intraocular lens, IOL) postoperative contrast sensitivity (contrast sensitivity, CS), as the changes in the function and to compare laser tracking beam (laser raytracing LRT), the Hartmann-Shack (HS) refractometer (spatially resolvedrefractometer, SRR) and spatial resolution wavefront analyzer measuring intraocular lens wavefront aberrations different. The first part of the method: clinical select line phacoemulsification 126 eyes of patients with joint implanted IOL, uncorrected visual acuity ≥ 0.8, age 29 to 76 years, depending on the type of IOL implantation into monofocal IOL group and multifocal IOL group monofocal IOL (monofocal intraocular lens, SIOL) is divided into the traditional spherical IOL, the yellow IOL as well as the aspheric IOL group, age-matched among the three groups; refractive multifocal IOL (multifocal intraocular lens, MIOL) is divided into MIOL The second generation of refractive MIOL and diffraction MIOL three groups of age-matched group. January after check the patient's distance vision and near vision, contrast sensitivity measured by OPTEC 6500. Part II: Clinical selected line phacoemulsification combined IOL implanted in 34 patients with postoperative eye. Aged 50 to 80 years old, the best corrected visual acuity ≥ 0.5. Darkroom conditions, the pupil diameter of 5mm. After 3 months in patients with the line the HS, LRT, and the SRR three wavefront analyzer checks, in random order, records Zernike coefficient as well as the overall aberration, higher order aberrations, coma, trefoil and spherical aberration rms (Root-mean-square, RMS). The results of the first part: (1) traditional spherical IOL, the yellow IOL and aspheric IOL monofocal IOL group naked eye for distance vision 1.01 ± 0.18,0.99 ± 0.16 and 1.00 ± 0.16, respectively, among the three groups showed no significant difference (P> 0.05), the naked eye near vision 0.31 ± 0.12,0.3 ± 0.11 and 0.36 ± 0.11, respectively, among the three groups and no significant difference (P> 0.05). (2) CS value of aspheric IOL group compared with the conventional spherical IOL group (6, 12, 18 cpd), the state long-distance daytime high frequency, low status of daytime glare IF (3,6,12 cpd) compare the difference was statistically significant (P <0.05); distant night state low-IF (1.5,6,12 cpd) a significant difference (P <0.05), no statistically significant difference (P> 0.05) in the rest of the spatial frequency; night glare and close state any spatial frequency The following are not statistically significant (P> 0.05). The yellow IOL group CS value with traditional spherical IOL compared daytime and daytime glare state (1.5,3,6,12,18 cpd), the difference was not significant (P> 0.05), night glare state low frequency (1.5cpd) difference significant (P <0.05), night and close-state (1.5,3,6,12,18 cpd) and Night Glare state (3,6,12,18 cpd) no significant difference (P> 0.05). (3) MIOL group refractive the MIOL groups, second-generation refractive the MIOL \u0026 diffraction type MIOL uncorrected distance visual acuity were 1.03 ± 0.15,1.02 ± 0.20 and 1.03 ± 0.13, the naked eye near vision were 0.71 ± 0.23,0.73 ± 0.25 best corrected distance vision state of near vision, and 0.86 ± 0.25, respectively, 0.58 ± 0.20,0.63 ± 0.27 and 0.77 ± 0.29, there was no significant difference (P> 0.05). (4) refractive the MIOL groups, the second generation of refractive the MIOL groups and diffraction MIOL group CS comparison, day, daytime glare, night, night glare and close-state spatial frequency (1.5,3,6,12,18 cpd) compare the difference was not significant (P> 0.05). (5) MIOL group uncorrected distance vision SIOL no significant difference in uncorrected distance vision than SIOL group, a statistically significant (P <0.05). (6) MIOL group of long-distance daytime glare state 18cpd, the night glare 1.5,12 cpd and close state 18cpd conditions under average CS value below SIOL group, there is a statistically significant difference (P <0.05). The second part of (1) the total aberration, higher order aberrations, coma, clover, and 2 to 6 order aberrations of the rms value of the three groups were not statistically different (P> 0.05); spherical aberration- The root value LRT group and the SRR group statistically significant difference (P <0.05), LRT group and HS group, the HS group SRR was no significant difference (P> 0.05). (2) Comparison of Zernike coefficient Z3 LRT group and HS group, HS group and SRR group was statistically significant (P <0.05), the LRT group with SRR group was not statistically significant (P> 0.05); the Z4 item LRT group and the HS group, the LRT group SRR group and HS group and SRR group, either between the two groups were statistically significant (P <0.05); items Z6 and Z12 HS group SRR group group significant difference (P <0.05); items Z11 and Z20 LRT group SRR group group there is a statistically significant difference (P <0.05); no significant (P> 0.05) difference between the rest of the Zernike coefficient. Conclusion: (1) implanted aspheric IOL postoperative pseudophakic eyes CS in the daytime and night state can improve high frequency implantation of yellow IOL postoperative CS no negative impact. (2) implantation of refractive the MIOL implanted diffraction MIOL postoperative distance vision, near vision, best corrected distance vision state of near vision and CS difference was not statistically significant. (3) MIOL can provide good distance vision, but the CS slightly below SIOL. (4) LRT, HS and SRR wavefront analyzer measurement and IOL eye aberrations result in part of the difference. Three different principles of the instrument can provide the intraocular lens of the wave front aberration information, and the difference between them is smaller. But each instrument has its own advantages and disadvantages, depending on the purpose should be used to choose a different instrument.
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