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An Improved Intraocular Lens Power Calculator
Ophthalmic Surgery, Lasers and Imaging Retina, 1982SUMMARY An easily operated, self-prompting, hand-held computer system simultaneously uses various prediction methods to print estimated intraocular lens implant powers. Predictions for specific lens styles are generated without requiring knowledge on the user's part of implant characteristics.
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Pediatric intraocular lens power calculations
Current Opinion in Ophthalmology, 2012To implant an appropriate intraocular lens (IOL) in a child, we must measure the eye well, calculate the IOL power accurately and predict the refractive change of the pseudophakic eye to maturity. The present review will concentrate on recent studies dealing with these issues.Immersion A-scan biometry is superior in measuring the axial length of ...
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Biometry and intraocular lens power calculation
Current Opinion in Ophthalmology, 2005This article surveys the literature of 1 year, between July 2003 and August 2004, on the topic of biometry and intraocular lens power calculation for cataract surgery. There is an increasing demand for low postoperative refractive error with rising patient expectations, especially with patients who have already undergone refractive surgery, and with ...
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Calculation of intraocular lens power: a review
Acta Ophthalmologica Scandinavica, 2007This review describes the principles and practices involved in the calculation of intraocular lens (IOL) power. The theories behind formulas for calculating IOL power are described, using regression and optical methods employing 'thin lens' and 'thick lens' models, as well as exact ray-tracing methods.
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Journal of Cataract and Refractive Surgery, 2018
To evaluate the accuracy of 9 formulas (Barrett Universal II, Haigis, Hill-Radial Basis Function [RBF], Hoffer Q, Holladay 1, Holladay 2, Olsen, Sanders-Retzlaff-Kraff/theoretical [SRK/T], and T2) calculating the power of the quadrifocal Acrysof IQ Panoptix TFNT00 intraocular lens (IOL).Department of Ophthalmology, Goethe University, Frankfurt, Germany.
Mehdi, Shajari +7 more
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To evaluate the accuracy of 9 formulas (Barrett Universal II, Haigis, Hill-Radial Basis Function [RBF], Hoffer Q, Holladay 1, Holladay 2, Olsen, Sanders-Retzlaff-Kraff/theoretical [SRK/T], and T2) calculating the power of the quadrifocal Acrysof IQ Panoptix TFNT00 intraocular lens (IOL).Department of Ophthalmology, Goethe University, Frankfurt, Germany.
Mehdi, Shajari +7 more
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Determining intraocular lens power within the eye
American Intra-Ocular Implant Society Journal, 1985A method is described for determining the power of an intraocular lens (IOL) within the eye by measuring the horizontal dimension of the corneal reflected image (Purkinje-Sanson I) and the anterior IOL reflected image (Purkinje-Sanson III) as seen through a standard slitlamp with a target positioned 68 mm anterior to the focal plane of the ...
J T, Holladay +6 more
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Calculation of Intraocular Lens Power
2020The selection of intraocular lens (IOL) power in pediatric patients is decidedly different and more complex than when making a similar choice in adult patients. The choice of IOL power is driven by many factors such as the patient’s age at cataract surgery, the presence of unilateral or bilateral cataracts, the refractive error of the fellow eye, the ...
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Selecting an Intraocular Lens Power
2016Once the decision has been made to operate on a child with a congenital cataract, a choice must be made about the optimal mode for correction of aphakia. Options include contact lens correction of aphakia, aphakic spectacle correction, and primary intraocular lens (IOL) implantation.
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