sa60at spherical aberration

A new intraocular lens design to reduce spherical aberration of pseudophakic eyes Holladay, JT; Piers, PA; Koranyi, G Visual acuity and contrast sensitivity comparison between Tecnis and AcrySof SA60AT intraocular lenses: a multicenter randomized study 2003; 29:2096-2104. Contrast sensitivity was significantly superior in the AcrySof IQ group in 7 of 15 measurement conditions. Received 10 May 201015 January 2011 Accepted 27 January 2011. Evaluation of Spherical Aberration Profile of Various ... PDF TECNIS® and Acrysof® Soft Intraocular Lenses for Patients ... However at a temperature of 34°C, the cylindrical power, astigmatic aberration and coma aberrations of the SA60AT, 251 and W-60 IOL were not . the AcrySof SA60AT spheric monofocal IOL and the AcrySof SA60AT aspheric . Following my appointment at the Wolfe Eye Clinic in 1980 I quickly learned phacoemulsification from my partners John Graether and Russ Watt in Marshalltown and from Dick Kratz, Tom Mazacco, Mike Colvard, and Bob Sinskey in Los Angeles. However at a temperature of 34°C, the cylindrical power, astigmatic aberration and coma aberrations of the SA60AT, 251 and W-60 IOL were not . Individually Customized IOL Versus Standard Spherical ... (PDF) Comparison of higher order ... - Academia.edu The decreases in visual acuity and contrast sensitivity that occur with age are usually attributed to changes in the lens. 1 The crystalline lens undergoes positive spherical aberration (SA) with age, which disrupts the wave front balance with the cornea and increases the positive SA of the whole eye. To evaluate the efficacy of AcrySof SN60WF aspheric intraocular lens (IOL) in decreasing spherical aberration and total higher order aberrations (HOAs) after cataract surgery compared to the spherical SN60AT lens. The 7 diffractive steps are spaced closer together than the AcrySof IQ ReSTOR +3.0 D Add IOL and it has a 0.94 mm-diameter . Retinal Physician - Should Retinal Surgeons Influence the ... Spherical Aberration in the Eyes Aspheric and Spheric IOL Pongsak Pachimkul, M.D. In other words, if you eliminate all of the eye's spherical . Aspheric versus spheric - EyeWorld Mester U, Kaymak H. [The aspheric blue light filter IOL AcrySof IQ compared to the AcrySof SA60AT : influence of IOL power, pupil diameter, and corneal asphericity on postoperative spherical. Visual acuity and contrast sensitivity comparison between Tecnis and AcrySof SA60AT intraocular lenses: A multicenter randomized study. In this study, we measured in vivo the longitudi-nal chromatic aberration in pseudophakic patients It is more common for the anterior corneal spherical aberration value simply to be reduced to something close to zero, and, in that scenario, an aberration-neutral IOL is often placed. Crossref Medline, Google Scholar; 34. The cylindrical power, astigmatic aberration and coma aberration of the W-60 IOL with asymmetrical surface wrinkles were significantly higher at 0.5 min to 5.0 min than that at the baseline at 24°C. A significant difference was found regarding spherical aberration. Purpose: : The goal of the study was to investigate spherical aberration (SA) profile of various intraocular lenses (IOLs) and its impact on effective IOL power. graduated from… •Relay lens corrects bulk of spherical aberration •Filed lens redistributes rays on the relay lens so that a good wavefront match can take place. Aspheric IOLs can provide needed negative spherical aberration to compensate for the aged cornea, characterized by positive spherical aberration, Dr. Trueb noted. The authors concluded that the results confirmed the use of modified aspheric IOL improved visual performance at 2 years after surgery. White (MA) or Yellow spherical (SN) with aspheric Optic One piece Hydrophobic IOL, extended dioptric Range to +40.0 D. 42.5 and 45 D, spherical aberration within± 0.25 μm, corneal HOA<0.5 µm and angle kappa <0.4 mm were included in the study. The SA60AT is a single-piece acrylic IOL with a 6.0 mm spherical optic . The AcrySof IOL (model SA60AT) is an ultraviolet-absorbing acrylic foldable single-piece lens. Dynamic changes of optical aberrations during restoration ... 2003, I presented the results of my study to determine At-a-Glance. Outcomes of corneal spherical aberration-guided cataract surgery measured by the OPD-scan. Contralateral comparison of visual outcome of AcrySof IQ ... cataract surgery were randomized to receive in both eyes either the Tecnis Z9000 intraocular lens or the the Acrysof SA60AT intraocular . The positive spherical aberration of the cataract in the aging eye may add to this aberration and make the quality of vision worse in elderly . Mean values of spherical aberration, calculated for a 5-mm pupil were 0.20 +/- 0.06 microm with the SA60AT and 0.04 +/- 0.05 microm with the AcrySof IQ lens. Refractive-Error Quality of Life (RQL) in Patients with ... All three lenses have different strategies for compensating for spherical aberration. In fact, we found a drastic . Rocha KM, et al., Spherical aberration and depth of focus in eyes implanted with aspheric and spherical intraocular lenses. Methods Patients underwent uneventful phacoemulsification with implantation of either an aspheric (AO, n = 19) or spherical (AT, n = 20) IOL. IOLs could be classified into spherical IOLs ( like the AcrySof SP or SA60AT, or the Sensar Ar40e), negative spherical aberration lens that compensate for the corneal positive spherical aberration ( AcrySof IQ, Tecnis or Vivinex XY1 ), and truly aspheric lenses that do not add or . Table 2 displays the demographic data. The authors Material and methods In a prospective study, 70 eyes with the aspheric blue light filter . A total of 111 eyes were treated with spherical IOLs (Alcon SA60AT) and 39 eyes with aspheric aberration-correcting IOLs (Johnson & Johnson Tecnis ZCB00). Single-piece, clear acrylic lens. We investigated the LCA of eyes implanted with yellow-colored IOLs from three different manufacturers: Alcon Inc., HOYA Corp., and AMO Inc. Address reprint requests to Tae Im Kim, MD, PhD Department of Ophthalmology, Yonsei University Severance Hospital #250 Seongsan-ro, Seodaemun-gu, Seoul 120-752, Korea Tel: 82-2-2228-3570, Fax: 82-2-312-0541, E-mail: taeimkim@gmail.com. 4. th. (IOL) designed to correct for corneal spherical aberration or with a conventional IOL. Three aspheric IOLs are currently FDA approved: the SofPort LI61AO (Bausch & Lomb), the AcrySof IQ (Alcon Laboratories, Inc.), and the Tecnis Z9000 (Advanced Medical Optics, Inc.). 1. Introduction. The impact of these factors was investigated in a comparative study. yes of 68 patients who underwent phacoemulsification cataract surgery were studied. The material, the coating, and the quality of the glass can both increase and reduce spherical aberration. Bellucci R, Scialdone A, Buratto L, et al., Visual acuity and contrast sensitivity comparison between Tecnis and AcrySof SA60AT intraocular lenses: A . Postoperatively, a 5 mm artificial pupil . Ian Anderson, F.R.A.C.O., Subiaco Eye Clinic, Perth, Australia, said he likes aspheric lenses and uses them often. Let's take a look. It is more common for the anterior corneal spherical aberration value simply to be reduced to something close to zero, and, in that scenario, an aberration-neutral IOL is often placed. For the spherical aberration, fourth‐order higher‐order aberration and total ocular higher‐order aberration, the SA40N group was higher than the SA60AT group and the SA60AT group was higher than the Z9001 group, and the differences between the three groups were statistically significant for these measurements. Spherical IOLs are typically used after LASIK correction for large amounts of hyperopia, which shifts the anterior corneal spherical aberration to negative values. 2 In young subjects, the crystalline lens compensates for any positive SA in . Most aberration-correcting IOL designs are optimized upon model eyes which reflect average biometrical and optical data of the human eye, providing a best fit correc- Methods: The IQ lens was implanted in one eye and the SA60AT lens in the other eye of every patient. graduated from Chiba University in 1975 and received his doctoral degree from Tokyo Institute of Technology (T.I.T.) Abbott Medical Optics (-0.27 µm), Alcon (-0.18 µm) and Bausch + Lomb (0.0 µm) all have aspheric IOLs that can be matched to the patient's measured corneal spherical aberration to achieve . . Cases with intraocular complica-tions that could aect IOL performance or IOL stability were excluded, as well as any capsular changes that would increase the risk of decentration or tilt of the IOL, such Although these characteristics should not affect forward scatter, some . The pupil-adaptive optical design optimize performance in all lighting conditions. For the spherical aberration, fourth-order higher-order aberration and total ocular higher-order aberration, the SA40N group was higher than the SA60AT group and the SA60AT group was higher than the Z9001 group, and the differences between the three groups were statistically significant for these measurements. A. Martínez Palmer, B. Palacín Miranda, M. Castilla Céspedes, M. Comas Serrano, A. Puntí Badosa . Aberrometry was performed by the OPD Scan III (Nidek) on the undilated pupil and under mesopic conditions at the first and . PurposeTo compare the clinical performance of the zero spherical aberration (SA) SofPort LI61AO (AO, Bausch & Lomb) intraocular lens (IOL) to the AcrySof SA60AT (AT, Alcon), which has positive spherical aberration.MethodsPatients underwent uneventful phacoemulsification with implantation of either an aspheric (AO, n = 19) or spherical (AT, n = 20) IOL. the positive spherical aberration of the cornea and the. The SN60WF is a blue-blocker and corrects for some spherical aberration, whereas the SA60AT does not have these characteristics. The positive spherical aberration of the human cornea (approximately one-half of a sphere or -0.52) may compensate for the negative spherical aberration of the human crystalline lens seen in youth 6. Spherical aberration influence in visual function after cataract surgery: prospective randomized trial. Distant best-corrected visual acuity was 20/20. Methods Acrylic IOLs (SA60AT; iSert 251; W-60; X-70; and VA-70AD) were loaded into a cartridge with viscoelastic material and ejected into a water chamber at 24°C or 34°C. Mean values of spherical aberration, calculated for a 5-mm pupil were 0.20±0.06 µm with the SA60AT and 0.04±0.05 µm with the AcrySof IQ lens. When spherical aberration was corrected, visual performance was as good as or better than for the normal spherical aberration case for defocus as large as + -1D. Pseudophakic Correction of Spherical Aberration. "From the optics point of view both the anterior and posterior surfaces are aspheric. The RF 15-35mm f/2.8L IS USM is one of Canon's aspherical lenses. Mean spherical aberration was closest to 0 in the Z9000 eyes (~0.02 microns), highest in the SofPort eyes (~0.12 microns), and intermediate in the AcrySof IQ eyes (~0.08 microns). •Can test a large mirror with small lenses. Postoperatively, a 5 mm artificial . The target postoperative tot al ocular spherical aberration was set to zero (0) and one of the following lenses was chosen: Acrysof SA60AT (n = 25), Acrysof I Q (n = 36) or Tecnis ® ZCB00 (n = 36). Spherical aberration after laser in situ keratomileusis and photorefractive keratectomy: clinical results and theoretical models of etiology. Objective: To compare the visual performance of aspherical AcrySof IQ (SN60WF) and SA60AT spherical intraocular lenses after cataract surgery. The anterior surface is designed with negative spherical aberration to compensate for the positive spherical aberration of the cornea. Contrast sensitivity was significantly superior in the AcrySof IQ group in 7 of 15 measurement conditions. Methods: Cases diagnosed as bilateral cataract were included in the study and preoperative aberration measurements were recorded by using Nidek OPD SCAN-ARK 1000. Spherical aberration (SA), coma, trefoil, and RMS of higher order aberrations (HOAs) were analysed for 4.0 and 6.0 mm optical zones. 2005; 31(4) . The effect of a standardized IOL asphericity depends on IOL power, pupil diameter, and corneal asphericity. This aspheric optic design is shown to reduce both spherical and total higher order aberrations for enhanced visual performance.5 zx Increased Contrast Sensitivity spherical aberration, or PCO. As a photographer, there are a few ways you can minimize spherical aberration in your photos. 29. No significant differences were found between groups in far-distance VA measured using ETDRS at 100% and 9% contrast. The image formed when spherical aberration is present causes a halo (or blur) around the paraxial image (Figure 2). SA60AT 2)Tecnis Aspherical 124 Mean age = 65.4 %Female = NR 3 months VA - BCVA o Z9001 (0.00) o SA40N (0.01) o SA60AT (0.01) o P = 0.303 Corneal aberrations - No sig difference btw IOL groups - Spherical aberration o Z9001 (0.24) o SA40N (0.21) o SA60AT (0.26) o P = 0.81 - Coma o Z9001 (0.35) o SA40N (0.33) o SA60AT (0.32) o P = 0.54 - RMS o . Positive spherical aberration of +0.34 μm of a virgin cornea; same case as Figures 2 and 3, coefficient Q of -0.22 (prolate cornea); ideal case to use an aspheric lens that induces a negative spherical aberration, for example the Tecnis with negative spherical aberration of -0.27 μm, resulting in a final aberration close to +0.07 μm negative spherical aberration of the youthful crystalline. Time Frame average data of post-op 3rd, 6th, 12th week measurements A wavefront analyser was used to measure the spherical and cylindrical powers, and the higher-order aberrations of the optics of the IOLs. He joined Toppan Printing Company in 1982 and the faculty of engineering of Chiba University in 1990. A prospective randomized study, Ophthalmology , 2007; in press. [1][2][3][4] [5] [6][7][8] In the young human eye, spherical aberration is a combination of the positive spherical aberration of the cornea and the negative spherical aberration of the crystalline . . We evaluated ocular magnitude of internal aberration induced by the IOL. 2010; 26:863-9. There was a difference in the quality of vision in photopic and mesopic conditions and also HOA, and those with reactive and dilated pupils, such as younger patients and night drivers, may be more satisfied with IQ aspherical lenses. The lens has a biconvex optic with supporting haptics. spherical aberration are consistent with what would be predicted based on lens design. 10.1016/j.jcrs.2003.09.008. The spherical aberration of the internal optics and coma of the cornea vary between eyes with different types of IOL. Methods: : An optical bench system equipped with a high resolution Shack-Hartmann wavefront sensor was used to measure the aberration of different IOLs placed in a wet cell: 2 spherical IOLs (AcrySof (SA60AT, Alcon), Sensar (AR40e . spherical aberration can be controlled. So far, only four to six eyes in each group had undergone contrast sensitivity . The AcrySof Aspheric IOL (model SA60WF) is an ultraviolet-absorbing acrylic foldable single-piece IOL. positive spherical aberration.11,12 Some pseudophakic patients complain about glare, halos, and starburst that could be attributed to spherical aberration.11,13 The IOL decentration and tilt creates an asymmetrical high order aberration, related to coma and secondary astig-matism.2 Wavefront technology was fi rst described to evalu- To that end, recent advances in aspheric monofocal . ( 0.27 mm),Alcon Laboratories, Inc. ( 0.18 mm), and Bausch & Lomb (0.0 mm) all have aspheric IOLs that can be matched to the patient's measured corneal Zernike spherical aberration to achieve the minimum ocular spherical aberration.4 Wang and Koch4 also found . OBJECTIVE To compare the visual performance of aspherical AcrySof IQ (SN60WF) and SA60AT spherical intraocular lenses after cataract surgery. Because the optical wavefront of the cornea remains essentially stable throughout life, 1 refractive lens exchange appears to represent a permanent solution to the challenges of restoring accommodation and achieving youthful quality of vision. The biconvex optic and supporting haptics consist of a high refractive index soft acrylic material. Ideally, the patient's corneal asphericity should be measured before choosing an aspheric Intra Ocular Lens (IOL). In addition to the Tecnis, 2 other aspheric IOLs that are now available include the AcrySof aspheric optic SN50WF HOA IOL (Alcon) and the aberration-free aspheric SofPort AO IOL (Bausch & Lomb . In group 1 (n=39), the hydrophobic Alcon SA60AT IOL, and in group 2 (n=29), the hydrophilic Rayner Superflex (620H) IOL, were implanted. J Cataract Refract Surg. At. * with 141 Objective: To evaluate the spherical aberration in patients underwent cataract surgery with aspheric and spheric intraocular lens (IOL) implantation in terms of contrast sensitivity test and wavefront sensing. Background The aspheric optic design of intraocular lenses (IOL) aims to minimize postoperative ocular spherical aberration (SA). A large range of IOL powers were included, which leads to (small) differences in IOL thickness as well. This randomized prospective study is to compare the vision-related quality of life (using NEI- RQL), spherical aberration, and visual acuity in eyes implanted with one of these two acrylic IOLs: an aspherical IOL (AcrySof IQ SN60WF) and a spherical IOL (AcrySof Single-Piece SA60AT). Spherical IOLs are typically used after LASIK correction for large amounts of hyperopia, which shifts the anterior corneal spherical aberration to negative values. Spherical aberration is the property of a single spherical surface to refract rays too strongly as one moves from the center of the pupil peripherally compared with the paraxial (central) focus (Figure 1). The LCA of eyes implanted with SN60WF and SN60AT (Alcon Inc.), and with . SN60WF, spherical asymmetric biconvex IOL; SA60AT, aspheric asymmetric biconvex IOL; Alcon Laboratories, Inc.) measured at 470 nm, 525 nm, and 660 nm with the use of an autorefractometer adapted to monochromatic measurements of refraction. J Cataract Refract Surg. * Pichit Naripthaphan, M.D. Objective: To assess high order and spherical aberrations results of hydrophobic acrylic AMO Sensar AR40E and hydrophobic acrylic Alcon AcrySof SA60AT intraocular lenses after implantation in cases with bilateral cataract. Material and Methods While the image quality with the negative spherical aberration lens is superior to the zero-aberration IOL, at a plano outcome the patient's vision with 0.5 D of defocus would be worse with the negative spherical aberration lens than it would with the zero-aberration lens. aberration-freelenses,whichcorrectfor the lens' intrinsic spherical aberration (SA), and aberration-correcting lenses, which provide partial or full correction of the corneal SA. However spherical lenses cause more spherical aberrations than aspherical lenses as they don't compensate positive spherical aberration in cornea in addition to its inherent aberration. The SN60WF is thinner than the SA60AT. As we get older, we lose contrast sensitivity, first at the higher spatial frequencies, then for all the spatial frequencies. The cylindrical power, astigmatic aberration and coma aberration of the W-60 IOL with asymmetrical surface wrinkles were significantly higher at 0.5 min to 5.0 min than that at the baseline at 24°C. The lens consists of a high refractive index soft acrylic material capable of being folded prior to insertion. (2009)12 TECNIS Z9000 . Dr. Ohnuma is currently an associate professor of medical engineering at Chiba University in Chiba. Purpose To compare the clinical performance of the zero spherical aberration (SA) SofPort LI61AO (AO, Bausch & Lomb) intraocular lens (IOL) to the AcrySof SA60AT (AT, Alcon), which has positive spherical aberration. The AcrySof IOL (model SA60AT) is an ultraviolet-absorbing acrylic foldable single-piece lens. However, he said he realizes there are drawbacks. The wavefront errors were described using the RMS of Zernike polynomials for total HOA at pupil diameters of 5 mm and 6 mm, primary spherical (Z 4,0) and 3rd-to 5th-order aberration at the pupil diameter of 6 mm. Therefore, these researchers concluded that completely correcting ocular spherical aberration improves spatial vision in the best-focus position without compromising the subjective . The number of subjects was 11, 16, and 16, respectively. Even in those relatively early days, phacoemulsification with the Cavitron Kelman 8000 was an excellent operation; the first real small-incision surgery.1 Participants: Seventy eyes of 35 patients who underwent phacoemulsification for cataract surgery. Su et al. The lens' full diffractive posterior surface allows a full range of quality vision, independent of pupil size.This also allows the lens to perform exceptionally . In the case of those aspheric multifocal lenses that increase depth of focus through spherical aberration, retinal optical quality in the far focus will inevitably be compromised, since the goal is to achieve a beneficial compromise between the gain in depth of focus and the loss in image quality [19, 22]. The SofPort lens is a multi-piece lens made of third-generation silicone. A significant difference was found regarding spherical aberration. Total, corneal, and internal aberrations were measured using ray-tracing technology in 23 eyes implanted with aspheric (Tecnis ZA9003) IOLs, and in 25 eyes implanted with spherical (AcrySof SA60AT . The AcrySof IQ lens is designed to enhance contrast sensitivity, reduce spherical aberration, and improve functional vision. Our lens is designed so that the lens itself has no spherical aberration." The SN60AT group (KW = 16.20; p=0.0003) showed with high spherical aberration values compared to the SN60WF (p=0.00046) and SN60D3 (p=0.0014) group. Several researchers have studied the longitudinal chromatic aberration (LCA) of eyes implanted with an intraocular lens (IOL). lens that is lost upon the development of a cataract. "The SofPort Advanced Optics (AO) aberration-free aspheric intraocular lens is a three-piece silicone lens with a 360-degree square edge, and PMMA haptics," explains Mr. Altmann. The tallest the bar the greater the diff in detect distance Z9000 is superior to SA60AT in . Solomon JD. A through-focus analysis demonstrated a similar depth of field, yet a comparatively higher visual Strehl ratio for the aspheric IOL at emmetropia (p = 0.038). The Tecnis IOL is designed to neutralize 100% of corneal spherical aberration in over 96% of the population with a nonmodified average corneal curvature. zx Reduced Spherical Aberration The AcrySof® IQ Toric IOL is designed with negative spherical aberration to compensate for the positive aberration of the average cornea. The wavefront errors were described using the RMS of Zernike polynomials for total HOA at pupil diameters of 5 mm and 6 mm, primary spherical (Z 4,0) and 3rd-to 5th-order aberration at the pupil diameter of 6 mm. The study examined the counterbalance effect SA60AT lens, which is one of the most favoured of the corneal spherical aberration, and evaluated the hydrophobic acrylic lenses. in 1981. Eyes implanted with the SA60AT had 43% greater positive spherical aberration at a 5 mm wavefront diameter, with no significant difference in corneal SA between groups. METHODS: Total, corneal, and internal aberrations were measured using ray-tracing technology in 23 eyes implanted with aspheric (Tecnis ZA9003) IOLs, and in 25 eyes implanted with spherical (AcrySof SA60AT) IOLs. What is Alcon IQ lens? The measurements were done under maximal mydriasis with Mydrin-P (phenylephrine hydrochloride 0.5% and tropicamide 0.5%, Santen). The terminology is the same in an optical system with multiple surfaces . Our results showed that both Sensar AR40E and AcrySof SA60AT lenses significantly correct aberrations caused by cataract in eyes where they are implanted and do . J Refract Surg. By measuring total spherical aberration and lower-order aberrations at the 3-, 4-, 5-, and 6-mm optical zones, we were able to determine that total spherical aberration was virtually zero in all patients at all optical zones (median, 0 ±0.02, 0 ±0.03, 0 ±0.06, and 0 ±0.08, respectively). Spherical Aberration • Increases 0.15 % / year (p < 0.0001) - Garcia et al., "Differences in Spherical Aberration by Age and Refractive Error" (poster). Anterior Asymmetric Biconvex. Purpose To compare ocular, internal, corneal aberrations, and contrast sensitivity in patients implanted with aspheric or spherical intraocular lenses (IOLs).MethodsTotal, corneal, and internal aberrations were measured using ray-tracing technology in 23 eyes implanted with aspheric (Tecnis ZA9003) IOLs, and in 25 eyes implanted with spherical (AcrySof SA60AT) IOLs. for spherical aberration of the cornea.It is the only lens on the market that is designed to correct the two highest-order aberrations - spherical aberration and chromatic aberration. Invest in good lenses. Acrysof SA60AT : Postoperative corneal higher order aberrations and contrast acuity were not significantly different between groups. The biconvex optic and supporting haptics consist of a high refractive index soft acrylic material. The LenStar biometer was used in 71% of patients and IOLMaster in 29%. Design: Prospective comparative study. The spherical aberration of a natural human lens increases with age as is shown in this study by Glasser and Campbell. The posterior aspheric surface is designed with negative spherical aberration . International Congress of Wavefront Sensing, San Francisco, CA, 14 February 2003. the ASCRS annual meeting in San Francisco in April. for all factors causing spherical aberration (my Table2).3 AbbottMedicalOptics,Inc.

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