Cataract — Study of Presbyopia-correcting Intraocular Lenses in Eyes With Previous Corneal Refractive Surgery
Citation(s)
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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.
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.
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.
Interventional studies are often prospective and are specifically tailored to evaluate direct impacts of treatment or preventive measures on disease.
Observational studies are often retrospective and are used to assess potential causation in exposure-outcome relationships and therefore influence preventive methods.
Expanded access is a means by which manufacturers make investigational new drugs available, under certain circumstances, to treat a patient(s) with a serious disease or condition who cannot participate in a controlled clinical trial.
Clinical trials are conducted in a series of steps, called phases - each phase is designed to answer a separate research question.
Phase 1: Researchers test a new drug or treatment in a small group of people for the first time to evaluate its safety, determine a safe dosage range, and identify side effects.
Phase 2: The drug or treatment is given to a larger group of people to see if it is effective and to further evaluate its safety.
Phase 3: The drug or treatment is given to large groups of people to confirm its effectiveness, monitor side effects, compare it to commonly used treatments, and collect information that will allow the drug or treatment to be used safely.
Phase 4: Studies are done after the drug or treatment has been marketed to gather information on the drug's effect in various populations and any side effects associated with long-term use.
