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学科主题: 临床医学
题名:
Intraocular lens power calculations using a Scheimpflug camera to measure corneal power
作者: Xu, K.; Hao, Y.; Qi, H.
关键词: cornea ; eyes ; IOL calculation ; lens ; Pentacam ; refractive surgery ; Scheimpflug camera
刊名: BIOTECHNIC & HISTOCHEMISTRY
发表日期: 2014-07-01
DOI: 10.3109/10520295.2013.867532
卷: 89, 期:5, 页:348-354
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology
类目[WOS]: Biotechnology & Applied Microbiology ; Cell Biology
研究领域[WOS]: Biotechnology & Applied Microbiology ; Cell Biology
关键词[WOS]: IN-SITU KERATOMILEUSIS ; MYOPIC PHOTOREFRACTIVE KERATECTOMY ; REQUIRING CATARACT-SURGERY ; EXCIMER-LASER SURGERY ; REFRACTIVE SURGERY ; EYES ; PENTACAM ; FORMULA ; PREDICTION
英文摘要:

We measured corneal power using an Oculus Pentacam (R) to assess its accuracy for calculating intraocular lens (IOL) power after myopic refractive surgery. A series of corneal power measurements were performed on 22 patients (43 eyes) who had undergone myopic refractive surgery. In 37 of the 43 eyes, phacoemulsification and IOL implantation subsequently were performed. Conventional keratometry and three corneal measurements (mean true net power, central true net power, and 4.5 mm equivalent K reading) obtained using a Pentacam were analyzed and compared to values derived from the clinical history method. Prediction errors of three Pentacam corneal power measurements inserted in third generation IOL formulas also were compared. Analysis of the variance showed that only two Pentacam corneal measurements, mean true net power and central true net power, were not significantly different from those of the clinical history method. Mean true net power was correlated more closely with the clinical history method corneal power than other corneal power values. The one-sample t-test showed that of three Pentacam corneal measurements combined with third-generation formulas, only the mean true net power inserted in the SRK/T implant power calculation formula was not significantly different from zero. The percentages of eyes within +/- 0.50 D and +/- 1.00 D of the refractive prediction error of this method were 67.6% and 86.5%, respectively. Mean true net power inserted in the SRK/T formula can be used to calculate directly IOL power after myopic refractive surgery.

语种: 英语
WOS记录号: WOS:000337900500005
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.bjmu.edu.cn/handle/400002259/64054
Appears in Collections:北京大学第三临床医学院_眼科_期刊论文

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作者单位: Peking Univ, Hosp 3, Dept Ophthalmol, Beijing 100871, Peoples R China

Recommended Citation:
Xu, K.,Hao, Y.,Qi, H.. Intraocular lens power calculations using a Scheimpflug camera to measure corneal power[J]. BIOTECHNIC & HISTOCHEMISTRY,2014,89(5):348-354.
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