Results 161 to 170 of about 5,603 (192)

A slide rule for calculating the power of an intraocular lens

American Intra-Ocular Implant Society Journal, 1983
We have designed a slide rule to calculate the emmetropizing and iseikonizing power of an intraocular lens (IOL). Like the dial biometer currently used for these calculations, the slide rule is inexpensive, easy to use, simple, and a compact pocket size.
G J, Wang, O, Pomerantzeff, T Y, Miao
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The fudged formula for intraocular lens power calculations

American Intra-Ocular Implant Society Journal, 1982
The formula presented is a modification of Colenbrander's formula. The formula yields a 0.70 diopter stronger power emmetropizing lens for a 23.0 mm eye. It also fudges the axial length by subtracting 0.1 mm for each 1.0 mm longer than 23.0 mm, and by adding 0.1 mm for each 1.0 mm shorter than 23.0 mm.
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Intraocular Lens Power Calculations: The Optimal Approach

Ophthalmologica, 2010
The differences were studied between retrospectively calculated emmetropizing intraocular lenses and lenses estimated from different methods and formulas, either with or without the use of ultrasonic biometry. A number of 201 eyes was involved. The results show that ultrasonic biometry is an indispensable tool for the prediction of the power of ...
R M, Boerrigter, J M, Thijssen, A M, Verbeek   +2 more
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Sources of error in intraocular lens power calculation

Journal of Cataract and Refractive Surgery, 1992
The hypothesis that the minimum error in predicted refraction after implantation of an intraocular lens (IOL) of calculated power is the sum of the random error in (1) the measurement of the axial length, (2) the measurement of the corneal power, and (3) the estimation of the pseudophakic anterior chamber depth (ACD) is proposed.
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Intraocular Lens Power Calculations

Archives of Ophthalmology, 1987
How important is biometry? Most of us who perform intraocular lens (IOL) implantation have basically accepted it as the "gospel truth" without much discussion. Nobody wants to face the unhappy patient with aniseikonia or a markedly myopic or hyperopic refraction.
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Sources of error in intraocular lens power calculation

Journal of Cataract and Refractive Surgery, 2008
To identify and quantify sources of error in the refractive outcome of cataract surgery.AMO Groningen BV, Groningen, The Netherlands.Means and standard deviations (SDs) of parameters that influence refractive outcomes were taken or derived from the published literature to the extent available.
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Advanced Intraocular Lens Power Calculations

2006
The methodology for accurately calculating IOL power in normal and complex eyes has improved dramatically in recent years. Future advances are needed in all areas, including methods of measuring corneal power, predicting effective lens position, and perhaps even measuring axial length.
John P. Fang, Warren Hill, Li Wang, Victor Chang, Douglas D. Koch   +4 more
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Intraocular lens power calculation

Acta Ophthalmologica, 1989
Abstract Two hundred and two consecutive intraocular lens (IOL) implantations, the lens power being predicted with the SRK‐method, are retrospectively analyzed, and the factors possibly influencing the error in IOL power prediction are evaluated.
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Intraocular lens power calculation formula accuracy: Comparison of 12 formulas for a trifocal hydrophilic intraocular lens

European Journal of Ophthalmology, 2021
CARLOS Rocha-De-Lossada, José-María Sánchez-González   +1 more
exaly  

Intraocular Lens Power Calculation Software

Journal of Cataract and Refractive Surgery, 2002
J, Kuchenbecker, W, Behrens-Baumann
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