摘要:

Cataract surgery in a patient with uveitis is more complex than senile cataract extraction, because it involves multiple considerations related to the cause of uveitis, prospects of visual rehabilitation, appropriate surgical timing and technique, and the type and material of the intraocular lens used. Establishing the diagnosis, thorough eye examination, careful patient selection and meticulous control of perioperative inflammation are key elements to a successful visual outcome. Our aims in this article are to review the literature on this subject over the past year and highlight the behavior of intraocular lenses of various biomaterials in the uveitic eye. In addition, we also reemphasize the idea of a model of zero tolerance to intraocular inflammation to minimize the incidence of irreversible damage to ocular structures essential to good vision.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Cataract surgery has evolved dramatically over the last two decades, largely as a result of technological advances. As a result, visual outcomes and patient convalescence have improved significantly. A second consequence of increased instrumentation and technology, however, is increased complexity of cataract surgery and the advent of complications unique to these advances. Cataract surgeons must be aware and capable of managing the many possible adverse events that can occur during cataract surgery. This review identifies many of the common complications of cataract surgery, describes methods to avoid these complications and discusses techniques to address complications that do occur. It is the ability to avoid, quickly identify, and properly manage complications that defines the accomplished cataract surgeon.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

White Star micropulse technology is a software modification that allows extremely short bursts of ultrasound energy. Studies have shown that this decreases wound heat build-up with the retained efficiency of continuous ultrasound. Decreased energy utilization with improved corneal function and improved nuclear fragment followability appear to be additional benefits.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Refractive lens exchange with a multifocal intraocular lens is becoming a more popular method of refractive surgery in the presbyopic patient. The limitations of keratorefractive surgery have led to a resurgence of lens exchange surgery for patients with prescriptions outside the limits of corneal refractive procedures, in addition to patients with routine refractive errors requesting a surgical procedure to achieve emmetropia and also address presbyopia. Side effects of multifocal technology including unwanted photic phenomena and deterioration in contrast sensitivity are being further defined and evaluated to better assess the effects of these intraocular lenses on functional vision and patient satisfaction. Attention to detail in regards to proper patient selection, preoperative measurements, intraoperative technique, and postoperative management will ultimately result in excellent outcomes and improved patient acceptance of this effective technique.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

AdvanTec Legacy System and the NeoSoniX handpiece (Alcon Surgical, Fort Worth, Texas) are improvements to the Legacy System that allow power modulation and customization of surgical technique in phacoemulsification surgery. AdvanTec technology allows power modulation in terms of occlusion power management, global linear flow, mode sequencing, and visco mode. The NeoSoniX handpiece combines sonic oscillations with linear ultrasound to reduce thermal energy during nucleus removal. The AdvanTec System allows lower power, less delivered energy, a lower risk of thermal burns, less chatter, and improved followability during phacoemulsification. These improvements translate into successful clinical outcomes.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

An increasingly important goal of modern cataract and implant surgery is to obtain the most desirable refractive outcome for our patients, and in so doing, decrease their dependence upon spectacle correction. Refined spherical outcomes are now achieved by directing close attention to biometry technique, through the use of third generation intraocular lens (IOL) power formulae, and refinements in technology such as partial coherence interferometry. Similarly, improvements in astigmatic outcomes are now possible by focusing upon and obtaining more accurate preoperative cylinder measurements, careful surgical planning particularly in regard to incision(s) design, use of toric IOLs, and employing advanced postoperative enhancement techniques. Because of these refinements in technique and technology, the field of cataract and implant surgery has emerged as a true and recognized form of refractive surgery.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

Cystoid macular edema (CME) is a common problem after cataract extraction. It can occur after uncomplicated surgery in patients with otherwise healthy eyes, after complicated surgery, or after surgery in patients with ocular diseases such as uveitis or diabetic retinopathy. Usually vision loss from cystoid macular edema is temporary and responds to treatment with topical anti-inflammatory medications. However, some cases respond poorly to conservative treatment and may develop permanent visual loss. A review of the medical literature was performed for all articles published in English between August 1, 2001 and July 31, 2002 on the topic of cystoid macular edema after cataract surgery. The authors selected nine articles that were most relevant to the practicing ophthalmologist for inclusion in this review. Topics of interest included vitreous loss, retained lens fragments, diabetes, uveitis, retinitis pigmentosa, ocular hypotensive lipids, internal limiting membrane peeling, and intravitreal triamcinolone injection.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

摘要:

As the number and types of keratorefractive procedures increase and as the baby boomer population moves into the “cataractous decades,” the number of patients requiring cataract surgery following refractive surgery grows larger each year. While technological advances in surgical instrumentation and intraocular lens (IOL) design allow us to perform cleaner, faster, and more reliable cataract extractions, the ultimate postoperative refraction depends primarily on calculations performed before surgery. Third-generation IOL formulas (eg,Haigis, Hoffer Q, Holladay 2, or SRK/T) provide outstanding accuracy when used for eyes with physiologic, prolate corneas. In addition, most instruments used today for measuring corneal curvature and power were designed before the era of refractive surgery. These formulas and instruments make assumptions about the anatomy and refractive properties of the cornea that are no longer valid following most keratorefractive procedures. These breakdowns in IOL calculation often result in a “refractive surprise” after cataract surgery, which may require subsequent surgical correction. This article examines recent publications of modeling studies of various methods for estimating effective K values for IOL calculation, cataract surgery case series following refractive surgery, new corneal topography technologies and methods for correcting “refractive surprises” postoperatively.

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID

ISSN:1040-8738    

出版商:OVID    

年代:2003

数据来源: OVID