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Hao J, Tan LZ, Li L, Bu SC, Ren XJ, Tian F, Zhang H. Comparison of visual quality in cataract patients with low astigmatism after ART2 or ReSTOR intraocular lens implantation. Int J Ophthalmol 2019; 12:424-428. [PMID: 30918811 DOI: 10.18240/ijo.2019.03.12] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Accepted: 06/28/2018] [Indexed: 11/23/2022] Open
Abstract
AIM To compare visual quality in cataract patients with low corneal astigmatism who underwent intraocular lens (IOL) implantation, and evaluate effects of low levels of astigmatism on visual outcomes in multifocal pseudophakic eyes. METHODS This retrospective review of clinical records comprised patients with preoperative regular corneal astigmatism of 0.75-1.0 diopters (D) with-the-rule or 0.5-0.75 D against-the-rule who had uneventful cataract surgery and AcrySof IQ ReSTOR Toric-2 IOL (ART2) or AcrySof IQ ReSTOR IOL (ReSTOR) implantation. Retrospective data collection included postoperative ART2 axis rotation, uncorrected astigmatism, uncorrected entire visual acuities, distance corrected entire visual acuities, average modulation transfer function (aMTF), Strehl ratio (SR), spectacle independence, and patient satisfaction between groups. RESULTS Mean ART2 axis rotation was 3.12°±0.70°. No secondary surgery was required to realign IOL axis. Residual astigmatism values were -0.18±0.07 D and -0.91±0.25 D in groups ART2 and ReSTOR (P<0.05). Three months postoperatively, the mean uncorrected distant, intermediate, and near visual acuities of group A were 0.01±0.05, 0.05±0.07, 0.02±0.07 logMAR, respectively; these were better than those of group R, which were 0.08±0.06, 0.15±0.12, and 0.09±0.08 logMAR, respectively (P<0.05). aMTF, SR, and spectacle independence rates were not significantly different. All patients were satisfied with postoperative results. CONCLUSION ART2 is more suitable than ReSTOR for cataract patients with regular corneal astigmatism 0.75-1.0 D with-the-rule or 0.5-0.75 D against-the-rule.
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Affiliation(s)
- Jing Hao
- Tianjin Medical University Eye Hospital, Tianjin 300384, China.,North China University of Science and Technology, Tangshan 063000, Hebei Province, China
| | - Liang-Zhang Tan
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Lin Li
- Tangshan Gongren Hospital, Tangshan 063000, Hebei Province, China
| | - Shao-Chong Bu
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Xin-Jun Ren
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Fang Tian
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Hong Zhang
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
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Luo F, Bao X, Qin Y, Hou M, Wu M. Subjective Visual Performance and Objective Optical Quality With Intraocular Lens Glistening and Surface Light Scattering. J Refract Surg 2018; 34:372-378. [DOI: 10.3928/1081597x-20180406-01] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Accepted: 04/02/2018] [Indexed: 01/19/2023]
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Depth of focus after implantation of spherical or aspheric intraocular lenses in hyperopic and emmetropic patients. J Cataract Refract Surg 2017; 43:1413-1419. [DOI: 10.1016/j.jcrs.2017.08.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Revised: 08/22/2017] [Accepted: 08/27/2017] [Indexed: 11/19/2022]
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Quality of Vision after Deep Anterior Lamellar Keratoplasty (Fluid Dissection) Compared to Penetrating Keratoplasty for the Treatment of Keratoconus. J Ophthalmol 2017; 2017:4507989. [PMID: 28808586 PMCID: PMC5541790 DOI: 10.1155/2017/4507989] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2016] [Accepted: 05/16/2017] [Indexed: 11/17/2022] Open
Abstract
Purpose To compare the visual quality of patients with keratoconus who underwent penetrating keratoplasty (PKP) or deep anterior lamellar keratoplasty (DALK) with fluid dissection. Design Cross-sectional, observational study. Methods Twelve eyes that underwent PKP (PKP group) were compared to 24 eyes that underwent DALK (DALK group) after complete removal of sutures and stability of refraction. Visual, refractive, corneal topographic, corneal aberrometry, and ocular aberrometry parameters were compared for both groups. The χ2 and Mann–Whitney U tests were used for comparisons as appropriate. P < 0.05 was considered statistically significant. Results Uncorrected and best spectacle-corrected visual acuity (UCVA and BSCVA, resp.), mean refractive spherical equivalent and mean refractive cylinder (MRSE and MRC, resp.), root mean square of the 3 mm and 5 mm OPD Scan (NIDEK Co. Ltd., Gamagori, Japan), steep and flat meridians (SimK1 and SimK2, resp.), and the difference (corneal cylinder) were not statistically significantly different between groups (P > 0.05, all comparisons). All aberrations, point spread functions (PSF), and the modulation transfer function (MTF) were not statistically different between groups (P > 0.05). Conclusion For our small study, the postoperative PKP and DALK with fluid dissection patient groups had vision/optical quality parameters that were not statistically different. This may indicate that DALK with fluid dissection can replace PKP for keratoconus without compromising vision quality.
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Gao J, Wang XX, Wang L, Sun Y, Liu RF, Zhao Q. The Effect of the Degree of Astigmatism on Optical Quality in Children. J Ophthalmol 2017; 2017:5786265. [PMID: 28656103 PMCID: PMC5471557 DOI: 10.1155/2017/5786265] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Revised: 04/16/2017] [Accepted: 05/08/2017] [Indexed: 11/17/2022] Open
Abstract
PURPOSE To investigate the effect of the degree of astigmatism on optical quality in children. The important objective evaluation parameters we focus on include the RMS of the high-order aberrations, MTF, and PSF. METHODS The children, age ranging from 7 to 10 years old, underwent an optometry examination. Fifty-nine children who met the inclusion criteria were divided into three groups: A (1.0 D ≤ astigmatism < 2.0 D), B (2.0 D ≤ astigmatism < 3.0 D), and C (3.0 D ≤ astigmatism < 4.0 D). The OPD-SCAN-III aberrometer was used to measure PSF, MTF, and other optical parameters. Total higher-order aberrations, total coma aberrations, total spherical aberrations, and total trefoil aberrations corresponding to the RMS value, the AR value of MTF, and the SR value of PSF with a 4 mm pupil diameter were assessed. RESULTS RMS-HO, RMS-T.Coma, RMS-T.Tre, and RMS-T.Sph in the three groups were significantly increased with increasing the degree of astigmatism, while there were no significant differences in RMS-T.Sph between the groups. The AR value and the SR value decreased with increasing degree of astigmatism, and there were significant differences in the AR value and the SR value. CONCLUSION Astigmatism has a significant influence on the higher-order aberrations, MTF, and PSF in the children. The effect of astigmatism value on the optical quality is mainly reflected in the change in these three parameters.
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Affiliation(s)
- Jing Gao
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Xiao-xia Wang
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Lin Wang
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Yuan Sun
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Rui-fen Liu
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
| | - Qi Zhao
- Department of Ophthalmology, The Second Affiliated Hospital of Dalian Medical University, Dalian, Liaoning Province, China
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Xiao XW, Hao J, Zhang H, Tian F. Optical quality of toric intraocular lens implantation in cataract surgery. Int J Ophthalmol 2015; 8:66-71. [PMID: 25709910 DOI: 10.3980/j.issn.2222-3959.2015.01.12] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2013] [Accepted: 02/24/2014] [Indexed: 11/02/2022] Open
Abstract
AIM To analyze the optical quality after implantation of toric intraocular lens with optical quality analysis system. METHODS Fifty-two eyes of forty-four patients with regular corneal astigmatism of at least 1.00 D underwent implantation of AcrySof toric intraocular lens, including T3 group 19 eyes, T4 group 18 eyes, T5 group 10 eyes, T6 group 5 eyes. Main outcomes evaluated at 3mo of follow-up, included uncorrected distance visual acuity (UDVA), corrected distance visual acuity (CDVA), residual refractive cylinder and intraocular lens (IOL) axis rotation. Objective optical quality were measured using optical quality analysis system (OQAS II(®), Visiometrics, Spain), included the cutoff frequency of modulation transfer function (MTFcutoff), objective scattering index (OSI), Strehl ratio, optical quality analysis system value (OV) 100%, OV 20% and OV 9% [the optical quality analysis system (OQAS) values at contrasts of 100%, 20%, and 9%]. RESULTS At 3mo postoperative, the mean UDVA and CDVA was 0.18±0.11 and 0.07±0.08 logMAR; the mean residual refractive cylinder was 0.50±0.29 D; the mean toric IOL axis rotation was 3.62±1.76 degrees, the mean MTFcutoff, OSI, Strehl ratio, OV 100%, OV 20% and OV 9% were 22.862±5.584, 1.80±0.84, 0.155±0.038, 0.76±0.18, 0.77±0.19 and 0.78±0.21. The values of UDVA, CDVA, IOL axis rotation, MTFcutoff, OSI, Strehl ratio, OV100%, OV20% and OV9% depending on the power of the cylinder of the implantation were not significantly different (P>0.05), except the residual refractive cylinder (P<0.05). CONCLUSION The optical quality analysis system was useful for characterizing the optical quality of AcrySof toric IOL implantation. Implantation of an AcrySof toric IOL is an effective and safe method to correct corneal astigmatism during cataract surgery.
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Affiliation(s)
- Xian-Wen Xiao
- Tianjin Medical University Eye Hospital, Tianjin 300384, China ; Xiamen Eye Center of Xiamen University, Xiamen 361000, Fujian Province, China
| | - Jing Hao
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Hong Zhang
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
| | - Fang Tian
- Tianjin Medical University Eye Hospital, Tianjin 300384, China
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Jia LX, Li ZH. Clinical study of customized aspherical intraocular lens implants. Int J Ophthalmol 2014; 7:816-21. [PMID: 25349799 DOI: 10.3980/j.issn.2222-3959.2014.05.14] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Accepted: 07/14/2014] [Indexed: 11/02/2022] Open
Abstract
AIM To compare if there is an improvement in visual functions with age-related cataracts between patients receiving a aspherical intraocular lens (IOL) based on corneal wavefront aberration and patients randomly assigned lenses. METHODS A total of 124 eyes of 124 patients with age-related cataracts were placed in experimental group and a group receiving randomly assigned (RA) lenses. The experimental group was undergone Pentacam corneal spherical aberration measurement before surgery; the targeted range for residual total spherical aberration after surgery was set to 0-0.3 µm. Patients with a corneal spherical aberration <0.3 µm were implanted with a zero-spherical aberration advanced optics (AO) aspherical IOL and patients with an aberration ≥0.3 µm received a Tecnis Z9003 aspherical lens in experimental group. RA patients were randomly implanted with an AO lens or a Tecnis Z9003 lens. Three months after surgery total spherical aberration, photopic/mesopic contrast sensitivities, photopic/mesopic with glare contrast sensitivities, and logMAR vision were measured. RESULTS Statistical analysis on logMAR vision showed no significant difference between two groups (P=0.413). The post-surgical total spherical aberration was 0.126±0.097 µm and 0.152±0.151 µm in the experimental and RA groups, respectively (P=0.12). The mesopic contrast sensitivities at spatial frequencies of 6, 12 and 18 c/d in the experimental group were significantly higher than of the RA group (P=0.00; P=0.04; P=0.02). The mesopic with glare contrast sensitivity in the experimental group at a spatial frequency of 18 c/d was also significantly higher vs the RA group (P=0.01). CONCLUSION Pre-surgical corneal spherical aberration measurement in cataract patients followed by customized selection of aspherical IOL implants improved mesopic contrast sensitivities at high spatial frequencies, and thus is a superior strategy compared to the random selection of aspherical IOL implants.
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Affiliation(s)
- Lie-Xi Jia
- Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China
| | - Zhao-Hui Li
- Department of Ophthalmology, Chinese PLA General Hospital, Beijing 100853, China
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Zhu X, Ye H, Yang J, Lu Y. Effect of pupil size on higher-order aberrations in high-myopic pseudophakic eyes with posterior staphyloma. Eye (Lond) 2014; 29:98-105. [PMID: 25323850 DOI: 10.1038/eye.2014.242] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Accepted: 09/10/2014] [Indexed: 01/19/2023] Open
Abstract
PURPOSE To evaluate the effect of pupil size on higher-order aberrations (HOAs) in high-myopic pseudophakic eyes with posterior staphyloma using KR-1W aberrometer. METHODS Forty eyes of 40 high-myopic cataract patients with posterior staphyloma and 20 eyes of 20 age-related cataract patients with normal axial length were recruited. At 1 month after phacoemulsification and intraocular lens implantation, ocular and internal HOAs as well as the visual quality data in the two groups were evaluated with KR-1W analyzer before and after mydriasis. RESULTS Compared with normal axial length eyes, high-myopic pseudophakic eyes with posterior staphyloma had significantly lower values of internal coma both under 4-mm and 6-mm pupil sizes (P<0.001 and 0.020), as well as internal total HOAs (P<0.001) and third-order aberrations at 6-mm pupil size (P=0.018). Statistically significant differences were also found in the variation from 4- to 6-mm pupil sizes for internal coma (P=0.001), internal third-order aberrations (P=0.009), internal total HOAs (P=0.007), and ocular coma aberrations (P=0.006) between two groups. After mydriasis, Strehl ratio increased significantly in high-myopic eyes, whereas decreased slightly in normal axial length eyes (P=0.032 when compared with the variation between the two groups). Statistically significant differences were also found for the variation of modulation transfer functions (MTFs) at frequencies of 15, 30, 45, and 60 cycles/degree between the two groups (P=0.002, 0.002, 0.004, and 0.010, respectively). CONCLUSIONS High-myopic pseudophakic eyes with posterior staphyloma had significantly lower internal coma and less coma variations during mydriasis.
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Affiliation(s)
- X Zhu
- Department of Ophthalmology, Eye and Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
| | - H Ye
- Department of Ophthalmology, Eye and Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
| | - J Yang
- Department of Ophthalmology, Eye and Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
| | - Y Lu
- Department of Ophthalmology, Eye and Ear, Nose, and Throat Hospital of Fudan University, Shanghai, People's Republic of China
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Ahn JM, Choi BJ, Kim EK, Sgrignoli B, Kim TI. Three different aspheric treatment algorithms of laser-assisted sub-epithelial keratectomy in patients with high myopia. Jpn J Ophthalmol 2012; 57:191-8. [PMID: 23224677 DOI: 10.1007/s10384-012-0218-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Accepted: 08/28/2012] [Indexed: 11/29/2022]
Abstract
PURPOSE To compare visual outcomes and quality in high myopia patients treated using one of three aspheric treatment algorithms based on the NIDEK Advanced Vision Excimer Laser System. METHODS Sixty eyes of 60 high myopia patients (>-6 diopter) underwent topography-guided (CATz) (20 eyes), wavefront-guided (OPDCAT) (20 eyes), or topography and wavefront-guided (OPA) (20 eyes) laser-assisted sub-epithelial keratectomy. Visual acuity, manifest refraction spherical equivalent (MRSE), ocular and corneal higher order aberrations, corneal asphericity, point spread function (Strehl ratio) and modulation transfer function (MTF) were compared preoperatively and 1, 3 and 6 months postoperatively. RESULTS Six months after surgery, logMAR uncorrected visual acuity was 0.02 ± 0.09 in the CATz group, 0.02 ± 0.07 in the OPDCAT group and 0.02 ± 0.08 in the OPA group, and there were no statistically significant differences (P = 0.5355). No statistical differences were found among the three groups in MRSE (P = 0.3541). Induced spherical aberrations and the change of corneal asphericity were less in the OPA group than in the others (P < 0.0001). The MTF was slightly better in the OPA group than in the others. The Strehl ratio showed no statistically significant differences among the three groups. CONCLUSIONS All three aspheric treatment algorithms were safe and effective in correcting high myopia. Among them, the OPA algorithm maintained optical quality and physiologic cornea longer than the others.
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Mello GR, Rocha KM, Santhiago MR, Smadja D, Krueger RR. Applications of wavefront technology. J Cataract Refract Surg 2012; 38:1671-83. [DOI: 10.1016/j.jcrs.2012.07.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2011] [Revised: 01/27/2012] [Accepted: 02/13/2012] [Indexed: 10/28/2022]
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