Lasik

老花眼 - 新技术与治疗

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准分子激光器和多焦点角膜消融

Alarcón et al evaluated different theoretical models of a multifocal cornea for the correction of presbyopia by laser ablation using ray tracings. Because the pupil’s size decreases with accommodation, the investigators preferred the central model to obtain optimal multifocality with the achievement of a 2.4-mm central zone diameter to the peripheral model with a 2.9-mm central zone. It should be noted that, although near vision is better, the quality of distance vision provided by these models is worse than that of a presbyopic emmetropic eye.

In a clinical trial conducted over 12-months showed results of aspheric wavefrontguided LASIK to treat hyperopic presbyopia. They treated 66 eyes of 33 patients using the Visx Star S4 IR (Abbott Medical Optics Inc.). Six months postoperatively, mean corrected distance visual acuity was 20/20+1, and distance corrected near visual acuity was 2.7 ±1.7, with a maximum of a 6-line improvement in near vision. At 12 months, 100{0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} of patients achieved a binocular simultaneous UCVA of 20/25 or better and J3. Negative spherical aberration highly correlated with a postoperative improvement in distance corrected near visual acuity. In their conclusions, the researchers stated that patients who had a larger amount of preoperative hyperopia or a greater decrease in preoperative distance-corrected near visual acuity were more likely to have overall satisfaction.

178名连续患者使用Wawelight Allegretto Comimer激光（Alcon Laboratories，Inc。）接受了178名连续患者的图表审查。患者具有常见的屈光误差偏离误差，近视高达-5.00天，或远高达+ 3.00天的远视，不超过3.00 d散光。102例至少3个月的术后随访，81 {0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974}具有20/20或更好，98 {0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974}双目距离裸眼视力看到20/25或更好。此外，44 {0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974}实现J1双眼视力附近，60 {0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} J2和96 {0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} J3或更好。

Another clinical trial presented early outcomes of Intracor femtosecond laser treatment for presbyopia. The investigators treated the nondominant eye of 25 patients using the Technolas Perfect Vision femtosecond laser (Technolas Perfect Vision GmbH). The procedure involves the creation of five consecutive intrastromal rings around the line of sight. Treatment times were approximately 20 seconds. The mean gain in UCVA was 4.42 lines, with a range of 0 to 9 lines of improvement. The mean loss of distance BCVA was -0.46 ±0.83.9 Similarly, Ruiz et al evaluated 83 eyes of 45 patients with 6- to 12-month follow-up. Of the 83 eyes, 89.2{0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} achieved both J2 and 20/25 or better, and 69.9{0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} achieved a near UCVA of J1. This technology has the advantage of being minimally invasive, with a rapid effect manifesting within minutes to several hours. Further investigation of long-term stability is ongoing.

来自菲律宾的安全研究的相关数据通过Harvey S. UY，MD。十四名患者在45至60岁之间，BCVA的20/40或更好的BCVA，没有大于2年级的白内障，并最初同意白内障手术。所有接受单方面的单方面待遇，可选择在一次后续后续后续到白内障手术。早期结果显示1个月内没有进步性白内障地层。

在激光HTH华体会定位器，我们携带顶部名称外科手术和诊断眼科设备制造商，您可以信任，如Acon，Nidek，Lumenis等所有精确的眼科手华体会app信誉好华体会体育app官网下载术。联系我们www.www.fundalarms.comor call 1-877-924-2020 and let one of our expert equipment locators help you today.

The Basics of Lasik

Posted on byHTH华体会

LASIK站的激光辅助原位Keratomileusis and simply put is a procedure using an excimer laser that permanently changes the shape of the eye. A small flap is cut into the cornea and folded over to allow access to the part of the eye called the stroma, where the laser is used to reshape the cornea and the flap is closed.
The WaveScan Wavefront System used by many specialists in LASIK eye surgery works by creating a map that shows how your optical system, as a whole, processes light. This results in something similar to a fingerprint of each eyes unique vision profile, which allows patients to be treated for their own special imperfections during the LASIK eye surgery. WaveScan technology was originally developed for use in high-powered telescopes to reduce distortions when viewing distant objects in space. This technology has now been applied to laser vision correction, measuring imperfections in the eye never before measured using only standard methods for vision correction.
VISX明星S4激光器,它的许多proponents, brings a new standard of accuracy to laser vision correction with a combination of two different systems known as Variable Spot Scanning and 3D ActiveTrak. With a laser calibrated to .25 microns, this hybrid system offers amazing precision, and can treat many borderline conditions that were once beyond the scope of other technologies. Just for comparison, human hairs are 60-80 microns in diameter. The VISX Star S4 is capable of performing both a standard (non-wavefront) treatment and a CustomVue (Wavefront guided) treatment. The CustomVue treatment provided by the VISX Star S4 Laser utilizes information regarding the distortion of light as it passes through each person’s eye and attempts to reduce those that may be causing symptoms such as glare and halos.
CustomVue systems match a specially created profile (again, a kind of fingerprint of your vision to an ideal optical system. Once again using the VISX Star S4 laser, this profile data ensures precise, uniquely personalized LASIK eye surgery. If you are one of the particular LASIK patients who qualify for this kind of procedure, CustomVue allows the surgeon to eliminate microscopic flaws in your vision that cannot be corrected with either glasses or contact lenses.
The IntraLase laser is a technology used to replace the metal mechanical blade microkeratome traditionally used to cut the necessary corneal flap during a laser vision correction procedure. Rather than creating a flap with a blade, the IntraLase laser uses laser energy to make a quick, painless incision that is more precise.
对于顶级制造商，您可以信任，如Acon，Nidek和Lumenis for Precision Lasik手术设备，请在LaserLocators.com上联系我们，让我们的设备之一提供帮助。

LASIK is more than just seeing better- it’s choosing better as well

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在过去几年中，屈光手术程序显着增加。来自美国眼科学院的最新调查报告，2010年进行了大约800,000个屈光手术程序，从2009年开始超过50,000个。由于屈光和激光视力校正程序继续上升，与妥善医生选择是至关重要的改善您的愿景的最佳结果。根据LASIK和白内障手术如此流行的程序，质量愿景纠正需要从受过教育和知识最新技术的外科医生精确精确。

Thanks to recent developments in laser correction technology, LASIK and refractive eye surgeons are able to significantly reduce the risks and side effects of procedures to a minimal amount. According to the U.S. Food and Drug Administration, LASIK surgery complications now occur in less than 5{0730eed075b45d9e50c00d6cd42dd08773e0164f29a45151808bf89051290974} of all cases. But in order to maintain such a high degree of success, surgeons must pursue continued education in techniques and procedures in addition to their normal patient care. Patients should be sure to choose a qualified and experienced surgeon who is active in the ophthalmologic community isrs.org(International Society of Refractive Surgery) and who has a strict attention to detail, patient safety and health.

Another important step to take in your search for the right eye doctor is taking time to meet a surgeon and his or her staff while researching their credentials before undergoing any procedure. Through individualized and personal attention of each patient’s needs, while maintain open communication, is the best way to achieve the right results for each individual.

For more information on the latest ophthalmic equipment to help your practice expand contact us atwww.fundalarms.comand let one of our industry experts help

Accelerated Corneal Crosslinking Procedure Receives CE Approval

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A procedure designed to strengthen thecorneaafter LASIK called LASIK Xtra, has received CE approval for marketing in Europe and was just approved in Canada as well.

Marketed by Avedro, Inc., Lasik Xtra is an accelerated corneal crosslinking procedure that applies Avedro’s VibeX riboflavin ophthalmic solution to the cornea, and then uses it’s KXL System to irradiate the cornea with UV-A rays that only takes two minutes to apply, making it a good solution to combine with LASIK. Avedro said their studies show the procedure has helped people who received hyperopic LASIK, which tends to regress more than myopic LASIK, and will help patients maintain their vision correction they received from LASIK. Allaboutvision.com

虽然角膜交联尚未获得FDA批准，但Avedro的VIBEX解决方案已收到原子能机构的孤儿药物批准。在这种情况下，孤儿药物状态通常赋予稀有医疗条件的治疗方法，keratoconus，这是角膜逐渐变薄。

For more information on the latest ophthalmic equipment to help your practice expand contact us at www.fundalarms.com and let one of our industry experts help.