• Zhonghua Yan Ke Za Zhi · Apr 2015

    [The analysis of refractive error of long axial high myopic eyes after IOL implantation].

    • Qian Zheng, Zhennan Zhao, Hengli Lian, and Yun'e Zhao.
    • The Eye Hospital of Wenzhou Medical University, Hangzhou 310020, China.
    • Zhonghua Yan Ke Za Zhi. 2015 Apr 1; 51 (4): 276-81.

    ObjectiveTo investigate the factors that influence the postoperative refractive error in long axial high myopic eyes, and to compare the accuracy of optimized Haigis and SRK/T formulas.MethodsRetrospective study. From May 2008 to December 2010, 137 high myopic eyes (with axial length (AL) greater than or equal to 26 mm) of 137 patients, who got cataract surgeries at Eye Hospital of Wenzhou Medical University, were enrolled for this study. The AL, corneal curvature (K), and anterior chamber depth (ACD) were measured by IOL-Master preoperatively. The intraocular lens (IOL) power was determined by optimized Haigis and SRK/T formulas, respectively. The preoperative and postoperative refractions were measured with phoropter. The target refraction after monofocal foldable IOL implantation was between -1.96 D to -7.39 D depending on the optimized Haigis formula. The mean absolute error (MAE) equals to the absolute difference between the target refraction and the 3 months postoperative actual refraction. One-way both groups, which the AL groups were as follow: 26 mm≤AL≤28 mm, 28 mmResults(1) The IOL power is related to AL, K, ACD and preoperative spherical equivalent, the regression formulas is P=118.966-1.860AL-1.255K (F=472.86, P=0.00). (2) In AL groups: No statistical difference of MAE was found between each pair of groups by optimized Haigis (F=2.73, P=0.06). However, MAE difference were found between group 26 mm≤AL≤28 mm (-0.05±1.04) D and group 30 mmConclusionsAL was the main factor affecting refractive error after long-axial high myopic eye cataract surgery, followed by K. For preoperative prediction, SRK/T formula and optimized Haigis formula show no difference. In AL subgroups, optimized Haigis formula showed no significant difference in accuracy, comparing with SRK/T formula induced less refractive error in 26-28 mm group than in 30-34 mm group. There was no significant difference between SRK/T formula and optimized Haigis formulas in the K subgroups.

      Pubmed     Full text   Copy Citation     Plaintext  

      Add institutional full text...

    Notes

     
    Knowledge, pearl, summary or comment to share?
    300 characters remaining
    help        
    You can also include formatting, links, images and footnotes in your notes
    • Simple formatting can be added to notes, such as *italics*, _underline_ or **bold**.
    • Superscript can be denoted by <sup>text</sup> and subscript <sub>text</sub>.
    • Numbered or bulleted lists can be created using either numbered lines 1. 2. 3., hyphens - or asterisks *.
    • Links can be included with: [my link to pubmed](http://pubmed.com)
    • Images can be included with: ![alt text](https://bestmedicaljournal.com/study_graph.jpg "Image Title Text")
    • For footnotes use [^1](This is a footnote.) inline.
    • Or use an inline reference [^1] to refer to a longer footnote elseweher in the document [^1]: This is a long footnote..

    hide…