| Background and objective With the development of modern social sciences, people's life composes in reply pattern changing studying condition and life , the rate of ametropia increases gradually highly. Ametropia is the most common world range eye disease. The rate of ametropia is connected with human being factor in relation to such as race , sex , age , area , environment. Asia is that universally accepted high hair of ametropia area, is among them , China and Japan morbidity are maximal. The correction of ametropia is full of challenge at the same time in uninterrupted growth.Starting from 20 centuries medium term, refractive intraocular lens surgery method improves unceasingly, and step by step apply to clinical. Refractive intraocular lens surgery is to adopt artificial crystalline lens implantation method , the injustice correcting an anomaly to glorify state. Its will do different age of turn up arrangement of ideas , patient who is unlike injustice up state come into force individuation to cure a scheme becoming possibility. Toric intraocular lens concept is brought forward first on 1992 from Misawa , is a mirror append one post on manpower crystal optics spherical surface. First generation Toric IOL leads to fail because the bad and big revolution stability cut may produce high astigmatism and also, fails to manage to be extended in going ahead clinically. Visian toric implantable collamer lens implantation corrects and cures the astigmatism new method as one kind of operation , it does not change original injustice upping a mesenchyme , have according with eye inner physiology more, injustice glorifies flattening range expanding, skill queen optesthesia symptom superiority such as few , reversible. The problem does the TICL implantation mainly by pair of myopic astigmatisms patient , estimates that it's the skill corrects effect accuracy , predictability , stability after as well as the operation security composes in reply with the risk there existing in possibility complication , announces to it's the prospect applying to hitting the target clinically and then.Methods 57cases(100eyes)of myopia with astigmatism accepted TICL implantation.The range of per-operative myopia diopters was -4.75to-23.0D,mean ( 11.225±3.920 ) D. Astigmatism ranges 1.25to6.5D,mean (2.605±0.923)D.All eyes were followed up for 6～24 months.Each eye received TICL implantation per-and post-operative eye examination included UCVA, BCVA,refraction,counting of corneal endothelium,corneal curvature,cylinder axis of the TICL and anterior segment of the eyes. The statistics being in progress to observed result analyses , reveals TICL operation curative effect and risk.Result Six months after operation,rest astigmatism were (0～2.5)D,mean(0.778±0.674)D. The astigmatism change is within 0.5D in 2 years.The UCVA of 95% eyes and the BCVA of 99% eyes were same or better than the pre-operative BCVA. Twelve months after operation,2% of the TICL were above 30 degrees of the intended axis and 96% of the TICL were under 15 degrees of the intended axis. 7 eyes had increased introcular pressure shortly after surgery and after treatment the intraocular pressure become normal in 1 week.2 eyes of 1 patient never became normal. Dazzling sensation occurred in 2 eyes(one case).No severe complications including cataract or glaucoma occurred. Conclusion TICL allow patients the better UCVA,good rotational stability and predictability in the correction of astigmatism.TICL implantation should be carefully selected. |
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