quantitative changes of anterior segment before and after implantable collamer lens implantation for high myopia with pentacam anterior segment system

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ID: 255914
2015
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Abstract
AIM: To analyze the quantitative changes of anterior segment by Pentacam anterior segment system and to evaluate the safety and effectiveness after implantable collamer lens(ICL)implantation for high myopia.

METHODS:Twenty-one patients with 39 eyes were implanted ICL in our hospital from September 2011 to February 2013. The follow-up was 6～12mo. Central anterior chamber depth(ACD), anterior chamber angle(ACA), anterior chamber volume(ACV)were measured by Pentacam preoperatively, 1wk, 1 and 6mo postoperatively. The distance between crystal lens and IOL(ICL-vault)were measured at 1wk, 1 and 6mo postoperatively. Preoperative uncollected visual activity(pre-UCVA), best corrected visual acuity(BCVA), postoperative uncorrected visual acuity(post-UCVA)and intraocular pressure(IOP)were recorded. The paired t-test was used to access the data preoperatively and postoperatively in the statistical way by using SPSS 18.0 statistical software.

RESULTS: Preoperatively, at 1wk, 1 and 6mo postoperatively, ACD were 3.27±0.22, 3.02±0.33, 2.98±0.31, and 2.98±0.32mm. ACA were(40.39±5.40)°,(26.70±4.47)°,(26.96±4.48)°, and(26.95±4.45)°. ACV were 207.74±25.43, 122.87±17.58, 128.05±17.84, and 128.64±17.50mm3, respectively. There were statistically significant differences between preoperative and postoperative data in ACD, ACA, ACV(P<0.05). The distances between crystal lens and IOL(ICL-vault)were 0.49±0.13, 0.46±0.13, and 0.46±0.14 at 1wk, 1 and 6mo postoperatively. There were statistically significant difference between 1wk and the others(P<0.05). There were statistically significant different between the preoperative BCVA and postoperative BCVA(P<0.05). There was no contact between IOL and the crystal len. The anterior chamber angle was all open. There were no serious complications such as cataract, glaucoma, cystoid macular edema, retinal detachment, etc.

CONCLUSION:ACD, ACA, ACV by Pentacam anterior segment system are found to be decreased after the operation, but there is still a relative safe distance between IOL and the crystal len. ICL implantation is a safe, efficacy method in correcting high myopia, but the long-term effects will require further observation.

Reference Key
zhou2015guojiquantitative Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Yuan-Xiang Zhou
Journal journal of fungi
Year 2015
DOI
10.3980/j.issn.1672-5123.2015.5.11
URL
http://ies.ijo.cn/cn_publish/2015/5/201505011.pdf
Keywords Keywords not found

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