Chapter-52 Intraocular Lens Calculation after Prior Refractive Surgery

2008 ◽  
pp. 337-344
Author(s):  
Kenneth Hoffer
Keyword(s):  
Intraocular Lens ◽  
Refractive Surgery ◽  
Intraocular Lens Calculation

scholarly journals Progress in Modern Cataract Surgery – New Steps and Algorithms for Precise Measuring and Intraocular-lens Calculations

2017 ◽  
Vol 11 (02) ◽  
pp. 95
Author(s):  
Fritz H Hengerer ◽  
Gerd U Auffarth ◽  
Ina Conrad-Hengerer ◽  
◽  
◽  
...  
Keyword(s):  
Cataract Surgery ◽  
Anterior Chamber ◽  
Intraocular Lens ◽  
Axial Length ◽  
Refractive Surgery ◽  
Anterior Chamber Depth ◽  
Corneal Surface ◽  
Intraocular Lens Calculations ◽  
Target Refraction ◽  
Intraocular Lens Calculation

In standard cataract surgery, one of the major goals is to reach target refraction. Based on keratometry measurements, axial length and anterior chamber depth, most of the intraocular lens calculation formulae are suitable to achieve this aim. Further evaluation of corneal refractive parameters like anterior and posterior corneal surface by Scheimpflug devices led to a significant enhancement of precision in astigmatic and post-refractive surgery cases.

Intraocular Lens Calculation After Refractive Surgery

2012 ◽  
Vol 06 (01) ◽  
pp. 21 ◽  
Author(s):  
Wolfgang Haigis ◽  
Keyword(s):  
Clinical Practice ◽  
Measurement Error ◽  
Intraocular Lens ◽  
Refractive Surgery ◽  
Model Calculations ◽  
Iol Implantation ◽  
Iol Calculation ◽  
Iol Power ◽  
The Individual ◽  
Intraocular Lens Calculation

More and more patients who have had corneo-refractive surgery present for intraocular lens (IOL) implantation. IOL calculation in these patients is still a challenge. After refractive surgery, if eyes are treated as normal eyes, high hyperopic errors can occur in previously myopic eyes and moderate myopic errors in formerly hyperopic eyes. Three main sources for these errors can be identified: the radius measurement error, the keratometer index error and the IOL formula error. The literature presents a confusing variety of procedures and formulas to cope with this situation. An analysis of the available literature reveals the different methods used to address the individual error contributions, the magnitude of which is assessed by model calculations. The most relevant formulas for clinical practice are the no-history procedures, which require no previous patient data. Using these methods to calculate IOL power after refractive surgery makes it possible to obtain clinical outcomes of a similar quality to that for normal eyes.

Intraocular lens calculation adjustment after laser refractive surgery using Scheimpflug imaging

2016 ◽  
Vol 42 (2) ◽  
pp. 226-231 ◽  
Author(s):  
Alexander K. Schuster ◽  
David J. Schanzlin ◽  
Karin E. Thomas ◽  
Christopher W. Heichel ◽  
Tracy L. Purcell ◽  
...  
Keyword(s):  
Intraocular Lens ◽  
Refractive Surgery ◽  
Scheimpflug Imaging ◽  
Laser Refractive Surgery ◽  
Intraocular Lens Calculation

Prospective Evaluation of Intraocular Lens Calculation After Myopic Refractive Surgery

2008 ◽  
Vol 24 (1) ◽  
pp. 33-38 ◽  
Author(s):  
Monica Khalil ◽  
Amit Chokshi ◽  
Robert Latkany ◽  
Guopei Yu ◽  
Mark G Speaker
Keyword(s):  
Intraocular Lens ◽  
Refractive Surgery ◽  
Prospective Evaluation ◽  
Intraocular Lens Calculation

Intraocular lens calculation adjustment after laser refractive surgery

2017 ◽  
Vol 43 (4) ◽  
pp. 578 ◽  
Author(s):  
Maddalena De Bernardo ◽  
Palmiro Cornetta ◽  
Nicola Rosa
Keyword(s):  
Intraocular Lens ◽  
Refractive Surgery ◽  
Laser Refractive Surgery ◽  
Intraocular Lens Calculation

scholarly journals Retrospective comparative analysis of intraocular lens calculation formulas after hyperopic refractive surgery

PLoS ONE ◽  
2019 ◽  
Vol 14 (11) ◽  
pp. e0224981 ◽  
Author(s):  
Anibal Francone ◽  
Nicole Lemanski ◽  
Martin Charles ◽  
Sheila Borboli-Gerogiannis ◽  
Sherleen Chen ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Intraocular Lens ◽  
Refractive Surgery ◽  
Intraocular Lens Calculation
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