Cataract & Refractive

Defocus curve measurement of subjective amplitude of accommodation (AoA) is not affected by non-randomized letter sequences in presbyopic subjects, according to results of a study published in the August 2008 issue of the Journal of Cataract & Refractive Surgery.

Early unilateral cataract surgery in infants can produce good visual outcomes even if patching is discontinued, according to a study in the August 2008 issue of the Archives of Ophthalmology.

Three-day application of levofloxacin in the presence of polyvinyl alcohol-iodine or povidone iodine offers the best infection control in phaco patients, according to a study published in the May 2008 issue of the Japanese Journal of Ophthalmology.

Implanting a multifocal intraocular lens (IOL) into the non-dominant eye is a promising treatment for presbyopic emmetropic patients, according to a study published in the February 2008 issue of Spektrum der Augenheilkunde.

The Afinity Collamer aspheric single piece Intraocular Lens (IOL) Model CC4204A and the Elastimide Silicone aspheric IOL Model AQ2015A, both manufactured and marketed by STAAR Surgical, have been designated New Technology IOLs (NTIOLs) by the US Centers for Medicare and Medicaid.

Reading may be a risk factor for childhood myopia, according to a study published in the August 2008 issue of the British Journal of Ophthalmology.

Spectacles with a biotic telescope embedded within the lens promise to make everyday life easier for individuals with low vision, according to a paper published in the May/June 2008 issue of the Journal of Biomedical Sciences.

Visual impairment is associated with an increased risk of suicide, according to results of a study published in the July 2008 issue of the Archives of Ophthalmology.

Gauges and knives used during microincision cataract surgery (MICS) should be of equal thickness, according to a study published in the July 2008 issue of the Journal of Cataract & Refractive Surgery.

Sales of the Visian ICL (Implantable Collamer Lens; STAAR Surgical Company) grew 38% in the US over the previous year, while the rate of LASIK procedures declined by approximately 40% in the second quarter of last year.

A 20-item questionnaire is expected to be useful for evaluating the health-related quality of life of adults with strabismus and practical application in a clinical setting. The patient-derived questionnaire assesses both psychosocial and functional aspects of strabismus.

Photoablation increases the refractive index of the stroma following laser in situ keratomileusis (LASIK) surgery, according to a study published in the July 2008 issue of the Journal of Cataract and Refractive Surgery.

EyeSite, a free, interactive, self-service vision screening booth developed by Bart Foster of SoloHealth, has been launched, with the first kiosk taking residence in a Wal-Mart store in Georgia, US.

The fourth-generation Crystalens HD (Bausch & Lomb) accommodating intraocular lens (IOL) has received FDA marketing approval, five years after the lens was initially launched on the market.

Oertli has launched new instruments to be used in microincision surgery for the anterior and the posterior segments.

Assistant Professor Alexis Tsorbatzoglou and Professor Andras Berta discuss the various theories presented to define the mechanism of accommodation.

Dr Perry Binder discusses advances in femtosecond technology that are taking us a step closer to the ideal.

The rising demand for presbyopia-correcting IOLs has led to a rise in patient expectations, but can we please everyone? questions Professor Jay Pepose.

A combination of procedures could be best option for some patients, claims Dr Volker Rasch.

This technique, using a femtosecond laser, has been shown to improve ?near vision in presbyopes, according to Dr Luis Antonio Ruiz.

Dr Josef Reiter describes his reasons for increasing his number of Epi-LASIK procedures.

The safety of intracameral moxifloxacin (Vigamox, Alcon Laboratories) for post cataract surgery endophthalmitis prophylaxis was investigated in a prospective, randomized, controlled study. Statistical analyses of multiple postoperative outcome measures demonstrated no significant differences between patients who received intracameral moxifloxacin and controls treated with intracameral balanced salt solution.

Acuvue Oasys, a contact lens designed for astigmatic eyes, has been introduced at the American Optometric Association (AOA) annual meeting by Vistakon, a division of Johnson & Johnson Vision Care.

Alcon and Advanced Medical Optics (AMO) are to share proprietary information on their designs for intraocular lenses (IOL).

Durezol (difluprednate ophthalmic emulsion; Sirion Therapeutics) 0.05%, a topical steroid, has received US Food and Drug Administration (FDA) approval for the treatment of postoperative ocular inflammation and pain.

Animals undergoing lens removal surgery were treated with non-steroidal anti-inflammatory drugs pre- and postoperatively. On the first day after surgery, aqueous humor samples were taken at times corresponding to trough drug levels. The mean aqueous prostaglandin E2 concentration was significantly lower in animals being treated with ketorolac 0.4% (Acular LS, Allergan) compared with those receiving bromfenac 0.09% (Xibrom, ISTA Pharmaceuticals).

Few well-designed studies evaluate endophthalmitis prophylaxis. Available evidence suggests a role for intracameral cefuroxime. The benefit must be weighed against the potential risk of errors in formulation, however.

In a point-counterpoint debate at the annual meeting of the American Academy of Ophthalmology, one clinician contended that the rate of post-LASIK ectasia is declining and that, with careful screening and other preparatory steps, the rate of ectasia can be kept very low. The counter-argument by another clinician suggested that the multifactorial basis of ectasia as well as unknown risk factors make it impossible to prevent a certain percentage of cases from developing.

In a prospective, randomized, contralateral study of 75 adults, eyes in which an aspheric IOL (AcrySof IQ model SN60WF, Alcon Laboratories) had been implanted demonstrated better mesopic contrast sensitivity, significantly less spherical aberration, and significantly less total higher-order aberrations compared with eyes in which a standard spherical IOL (AcrySof model SA60AT, Alcon Laboratories) had been implanted. Cumulative uncorrected visual acuity and best-corrected visual acuity were equivalent between both groups.

The higher level of advanced glycation end products (AGE) in senile diabetic patients may correlate to a higher rate of cataract development, according to a study published in the May?June 2008 issue of the Journal of Diabetes and its Complications.