Study of Presbyopia-correcting Intraocular Lenses in Eyes With Previous Corneal Refractive Surgery
Study Details
Study Description
Brief Summary
This is a single-center, randomized, open, positive product, parallel controlled trial to evaluate the clinical outcomes of presbyopia-correcting intraocular lenses(IOLs) in eyes with previous corneal refractive surgery.
Specific Aim 1 (Primary): To compare the surgical successful rate of Multifocal and Extended Depth-of-Focus IOLs with Monofocal IOLs for the treatment in eyes with previous corneal refractive surgery.
Specific Aim 2 (Secondary): To study the suboptimal surgical outcomes between Multifocal and Extended Depth-of-Focus IOLs with Monofocal IOLs for the treatment in eyes with previous corneal refractive surgery.
Condition or Disease | Intervention/Treatment | Phase |
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N/A |
Detailed Description
Recently, the demands for myopia correction and corneal refractive laser surgery are rising with the increased prevalence of myopia. Corneal laser refractive surgery includes photorefractive keratectomy (PRK), laser-assisted in situ keratomileusis (LASIK), laser-assisted subepithelial keratomileusis ( LASEK), femtosecond assisted laser in situ keratomileusis (FS-LASIK), and small incision lenticule extraction(SMILE). At present, FS-LASIK and SMILE are the mainstream methods for correcting myopia refractive surgery with advantages of safety, reliability, predictability and stability compared with other types of refractive surgery. Cataract is the most important cause of blindness in my country and even in the world. More than 50% of blind people are caused by cataract. Many patients who have undergone corneal laser refractive surgery may develop presbyopia or cataracts with age. Phacoemulsification and intraocular lens(IOLs) implantation are the main methods for cataract due to lacking effective pharmaceutical treatments. In addition, the patients who use traditional monofocal IOLs without the ability of accommodation may fail to get rid of glasses. Therefore, a solution that can provide both distance vision and near vision is needed to the presbyopia or cataracts patients with previous corneal refractive surgery and accustomed to taking glasses off.The application of presbyopic IOL in cataract after corneal refractive surgery become extensive with the IOL technology continuously advancing, including Extended Depth-of-Focus(EDOF) IOL, multifocal IOL(especially trifocal IOL) and so on, which can improve the distance, middle, and near visual acuity conducing to reduce the rate of wearing glasses after cataract surgery.
This project is a single-center, randomized, open, positive product, parallel controlled trial to study the clinical outcomes and applied value of presbyopic IOLs, including EDOF and trifocal IOLs after corneal laser refractive surgery complicated with cataracts, and seek better solutions to enable patients to achieve satisfactory visual quality and refractive results after surgery, culminating in completing patients' demand of taking glasses off.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Experimental: Multifocal and Extended Depth-of-Focus intraocular lenses Patients suffering from cataract getting phacoemulsification and Intraocular lenses(IOLs) implantation |
Device: Use Multifocal and Extended Depth-of-Focus Intraocular Lenses(IOLs)
IOLs include AT LISA tri 839MP, AcrySof IQ PanOptix IOL, TECNIS Symfony EDOF
|
Active Comparator: Monofocal intraocular Lenses Patients suffering from cataract getting phacoemulsification and Intraocular lenses(IOLs) implantation |
Device: Use Monofocal intraocular lenses(IOLs)
Monofocal IOLs include 409(Zeiss), AcrySof, TECNIS IOLS
|
Outcome Measures
Primary Outcome Measures
- Postoperative UDVA measured with standard visual acuity charts [Measured 3 months after cataract surgery]
postoperative uncorrected distance visual acuity(UDVA)
- Postoperative UIVA measured with standard visual acuity charts [Measured 3 months after cataract surgery]
Postoperative uncorrected intermediate visual acuity(UIVA)
- Postoperative UNVA measured with standard visual acuity charts [Measured 3 months after cataract surgery]
Postoperative uncorrected near visual acuity(UNVA)
Secondary Outcome Measures
- monocular vision measured with standard visual acuity charts [Measured first day, first week, first month, 3 months, and 6 months after cataract surgery]
Uncorrected distance visual acuity and best corrected distance visual acuity
- monocular vision measured with standard visual acuity charts [Measured 1 month, 3 months, and 6 months after cataract surgery]
Uncorrected intermediate visual acuity, best corrected intermediate visual acuity, distance-corrected intermediate visual acuity, uncorrected near visual acuity, best corrected near visual acuity, and distance-corrected near visual acuity
- Diopter measured by Phorometer [Measured 1 month, 3 months, and 6 months after cataract surgery]
Important factor affecting the improvement of postoperative visual function
- IOL rotation stability [Measured first day, first week, first month, 3 months, and 6 months after cataract surgery]
The change in axis position will be evaluated with respect to the baseline measurement at the end of surgery. Differences in axis position will be described as rotation in degrees (0 to 360°)
- Wavefront aberration measured with the iTrace (Tracey Technologies, Houston, TX) [Measured 1 month, 3 months, and 6 months after cataract surgery]
total aberration, total low-order aberration, and total high-order aberration
- Contrast sensitivity measured by FACT chart [Measured 6 months after cataract surgery]
Provide accurate and comprehensive objective basis for the evaluation of visual function of cataract patients
- Binocular vision measured with standard visual acuity charts [Measured 6 months after cataract surgery]
Uncorrected distance visual acuity, best corrected distance visual acuity, uncorrected intermediate visual acuity, best corrected intermediate visual acuity, distance-corrected intermediate visual acuity, uncorrected near visual acuity, best corrected near visual acuity, and distance-corrected near visual acuity.
- The rate of IOL dislocation [Measured 6 months after cataract surgery]
Effectiveness evaluation index
- Defocus Curve [Measured 6 months after cataract surgery]
Drawing Defocus Curve after taking the average of the data collected in each group of patients
- Postoperative satisfaction:Chinese version visual function index-12(VF-12-CN) [Measured 6 months after cataract surgery]
Questionnaire survey on patients' quality of life
Eligibility Criteria
Criteria
Inclusion Criteria:
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The operated eye has ever undergone corneal refractive surgery, including PRK, LASIK, LASEK, FS-LASIK, SMILE and excluding RK
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At least one eye suffering from cataract and expected to undergo phacoemulsification and IOL implantation and cataract nuclei rigidity in the operated eye from 1 to 3 degree
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Expected to use intraocular lens power in -10.0D~+30.0D
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Willing and able to comply with scheduled visits and other study procedures.
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The need to decrease the dependence of glasses
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Signing an informed consent form
Exclusion Criteria:
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Any vision-limiting problems (e.g., corneal, retinal, infection) which could potentially limit their post-operative visual potential
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Any newly acquired ocular condition or pathology (e.g., ARMD, epiretinal membrane, chronic dry eye, irregular astigmatism, diabetic retinopathy)
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The density of corneal endothelial cells is lower than 2000/mm2
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The natural diameter of the pupil under the darkroom is less than 3mm or greater than 5.5mm
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The Kappa or Alpha angle of the operated eye is greater than 0.5mm, or the Kappa angle is greater than half of the diameter of the central refractive optical zone in the multifocal intraocular lens
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Patients with expected best corrected distance visual acuity(BCDVA) less than 0.5 (decimal vision)
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Occurrence of irregular corneal astigmatism that affects postoperative vision
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Intraocular conventional surgery within the past three months or intraocular laser surgery within one month in the operated eye
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Pregnant, lactation or planning to become pregnant in the near future
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Any surgical contraindications
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Uncontrolled systemic or ocular disease
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Use of any systemic or topical drug known to interfere with visual performance
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Other ocular surgery at the time of the cataract extraction
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Traumatic cataract or congenital bilateral cataract in the operated eye
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Getting used to reading with glasses
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High requirements for visual functions in patients' career or daily life
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Professional drivers or frequent outdoor workers at night
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A medical history of photophobia
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Amblyopia
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Excessive vision expectations after surgery or too sensitive, nervous, depressed or picky
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Unsupervised or unable to comply with scheduled visits
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The contralateral eye was judged to lose visual function
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Other situations where the researcher judges that the patient is not suitable for inclusion
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | Eye & ENT Hospital of Fudan University | Shanghai | Shanghai | China | 200031 |
Sponsors and Collaborators
- Eye & ENT Hospital of Fudan University
Investigators
- Principal Investigator: Yinghong Ji, phD, Eye Institute, Eye & ENT Hospital of Fudan University
Study Documents (Full-Text)
None provided.More Information
Publications
- Abulafia A, Hill WE, Koch DD, Wang L, Barrett GD. Accuracy of the Barrett True-K formula for intraocular lens power prediction after laser in situ keratomileusis or photorefractive keratectomy for myopia. J Cataract Refract Surg. 2016 Mar;42(3):363-9. doi: 10.1016/j.jcrs.2015.11.039. Epub 2016 Mar 19.
- Alio JL, Abdelghany AA, Abdou AA, Maldonado MJ. Cataract surgery on the previous corneal refractive surgery patient. Surv Ophthalmol. 2016 Nov - Dec;61(6):769-777. doi: 10.1016/j.survophthal.2016.07.001. Epub 2016 Jul 15. Review.
- Aramberri J. Intraocular lens power calculation after corneal refractive surgery: double-K method. J Cataract Refract Surg. 2003 Nov;29(11):2063-8.
- Bourne RR, Stevens GA, White RA, Smith JL, Flaxman SR, Price H, Jonas JB, Keeffe J, Leasher J, Naidoo K, Pesudovs K, Resnikoff S, Taylor HR; Vision Loss Expert Group. Causes of vision loss worldwide, 1990-2010: a systematic analysis. Lancet Glob Health. 2013 Dec;1(6):e339-49. doi: 10.1016/S2214-109X(13)70113-X. Epub 2013 Nov 11. Review.
- Chan TC, Liu D, Yu M, Jhanji V. Longitudinal evaluation of posterior corneal elevation after laser refractive surgery using swept-source optical coherence tomography. Ophthalmology. 2015 Apr;122(4):687-92. doi: 10.1016/j.ophtha.2014.10.011. Epub 2014 Dec 6.
- Ferreira TB, Pinheiro J, Zabala L, Ribeiro FJ. Comparative analysis of clinical outcomes of a monofocal and an extended-range-of-vision intraocular lens in eyes with previous myopic laser in situ keratomileusis. J Cataract Refract Surg. 2018 Feb;44(2):149-155. doi: 10.1016/j.jcrs.2017.11.007. Epub 2018 Mar 8.
- Gimbel H, Sun R, Kaye GB. Refractive error in cataract surgery after previous refractive surgery. J Cataract Refract Surg. 2000 Jan;26(1):142-4.
- Keates RH, Pearce JL, Schneider RT. Clinical results of the multifocal lens. J Cataract Refract Surg. 1987 Sep;13(5):557-60.
- Koch DD, Wang L. Calculating IOL power in eyes that have had refractive surgery. J Cataract Refract Surg. 2003 Nov;29(11):2039-42.
- Li M, Li M, Chen Y, Miao H, Yang D, Ni K, Zhou X. Five-year results of small incision lenticule extraction (SMILE) and femtosecond laser LASIK (FS-LASIK) for myopia. Acta Ophthalmol. 2019 May;97(3):e373-e380. doi: 10.1111/aos.14017. Epub 2019 Jan 11.
- Naseri A, McLeod SD. Cataract surgery after refractive surgery. Curr Opin Ophthalmol. 2010 Jan;21(1):35-8. doi: 10.1097/ICU.0b013e328333e9ab. Review.
- Seitz B, Langenbucher A, Nguyen NX, Kus MM, Küchle M. Underestimation of intraocular lens power for cataract surgery after myopic photorefractive keratectomy. Ophthalmology. 1999 Apr;106(4):693-702.
- Tang M, Li Y, Huang D. An intraocular lens power calculation formula based on optical coherence tomography: a pilot study. J Refract Surg. 2010 Jun;26(6):430-7. doi: 10.3928/1081597X-20090710-02. Epub 2010 Jun 17.
- Tang Y, Wang X, Wang J, Huang W, Gao Y, Luo Y, Lu Y. Prevalence and Causes of Visual Impairment in a Chinese Adult Population: The Taizhou Eye Study. Ophthalmology. 2015 Jul;122(7):1480-8. doi: 10.1016/j.ophtha.2015.03.022. Epub 2015 May 16.
- Wang L, Hill WE, Koch DD. Evaluation of intraocular lens power prediction methods using the American Society of Cataract and Refractive Surgeons Post-Keratorefractive Intraocular Lens Power Calculator. J Cataract Refract Surg. 2010 Sep;36(9):1466-73. doi: 10.1016/j.jcrs.2010.03.044.
- Wang L, Tang M, Huang D, Weikert MP, Koch DD. Comparison of Newer Intraocular Lens Power Calculation Methods for Eyes after Corneal Refractive Surgery. Ophthalmology. 2015 Dec;122(12):2443-9. doi: 10.1016/j.ophtha.2015.08.037. Epub 2015 Oct 14.
- Wen D, McAlinden C, Flitcroft I, Tu R, Wang Q, Alió J, Marshall J, Huang Y, Song B, Hu L, Zhao Y, Zhu S, Gao R, Bao F, Yu A, Yu Y, Lian H, Huang J. Postoperative Efficacy, Predictability, Safety, and Visual Quality of Laser Corneal Refractive Surgery: A Network Meta-analysis. Am J Ophthalmol. 2017 Jun;178:65-78. doi: 10.1016/j.ajo.2017.03.013. Epub 2017 Mar 20. Review.
- Yinghong Ji