Tonometer can provide accurate IOP levels during screenings for glaucoma, physician says
January 15th 2009A recent study shows that although the Goldmann applanation tonometer (GAT) is considered to be the standard in detecting eyes with elevated IOP and, therefore, glaucoma, a newer tonometer (Ocular Response Analyzer [ORA], Reichert) appears to be more effective. It also is suggested that glaucoma screening threshold pressure should be lowered from the current 21 mm Hg to 18 mm Hg, which may allow ophthalmologists to more effectively detect glaucoma in their patients.
Glaucoma medication a factor in ocular surface disease
January 15th 2009Due to the frequent coexistence of ocular surface disease and glaucoma in older patients, clinicians should take steps to reduce the potentially damaging effects on the ocular surface of long-term use of glaucoma medication. Reducing the number of medications when possible and choosing those that do not contain the preservative benzalkonium chloride is an approach that may be beneficial in some patients.
Normal-tension glaucoma is defined as a type of primary open-angle glaucoma
January 15th 2009Normal-tension glaucoma (NTG) is a form of primary open-angle glaucoma (POAG) in which there is no known history of statistically elevated IOP; however, the definition of an upper limit of normal IOP is arbitrary. POAG is a multifactorial disease process with pressure-dependent and pressure-independent etiologic factors. In NTG, the pressure-independent factors likely play a more substantial role.
Micromanaging or delegating: Which is better for the business?
January 15th 2009Most physicians micromanage when a problem occurs in the office, instantly analyzing the issue and announcing the changes they want colleagues and staff to make. However, employees on the front line in factories, doctors' offices, etc., have more information, and often can come up with better solutions than the "all-knowing" manager. Delegation helps employees learn from the problem-solving experience, and that makes them more valuable.
Patients with wet age-related macular degeneration in Canada experience inflammation
January 15th 2009Ophthalmologists in Canada are hoping that an outbreak of ocular inflammation in patients being treated with bevacizumab (Avastin, Genentech) will not cause stricter regulations against its off-label intravitreal use or deter doctors from using it to treat wet age-related macular degeneration. All of the confirmed cases were linked to a specific lot of the drug that was distributed throughout Canada and other parts of the world. Health Canada currently is working with an independent laboratory to complete tests to determine the cause of the outbreak.
Abbott and AMO reach acquisition agreement
January 12th 2009Abbott and Advanced Medical Optics (AMO) announced in a joint prepared statement that an agreement has been reached for Abbott to acquire AMO for $22 per share in cash, for a total transaction value of approximately $2.8 billion, inclusive of estimated net debt at the time of closing, approved by both boards of directors.
X-GEN receives go-ahead for acetazolamide for glaucoma
January 6th 2009X-GEN Pharmaceuticals Inc. will begin marketing injectable acetazolamide for indications including open-angle glaucoma and secondary glaucoma as well as preoperative use for the treatment of acute angle-closure glaucoma in cases in which surgery has been delayed to lower IOP.
Aspheric optic lens favorable in early clinical experience
January 1st 2009In cataract surgery cases where implantation of a monofocal acrylic IOL is planned, a recently approved model (Akreos Advanced Optics Aspheric Lens [model AO60], Bausch & Lomb) has rapidly become the IOL of choice for one surgeon who has implanted almost 100 of the lenses.
Corneal transplantation surgery enters new era with new techniques
January 1st 2009Anatomic outcomes of penetrating keratoplasty (PKP) have improved thanks to a number of innovations, but functional outcomes have still been suboptimal. The development of techniques based on use of the femtosecond laser to create host and donor incisions has driven PKP into a new era of refractive surgery.
Toric IOL shown to be rotationally stable by new imaging system and software
January 1st 2009A proprietary toric IOL (AcrySof Toric, Alcon Laboratories) was found to be rotationally stable and a reliable option for the correction of astigmatism in a prospective study of 50 patients. The results were arrived at by using an innovative digital imaging technique coupled with new software that uses a grid to determine rotational stability of IOLs to a sensitivity of 0.1°. The implications of the new digital imaging technology and its associated software extend well beyond the findings in these 50 patients.
Mechanical microkeratome performance highlighted in clinical, cadaveric studies
January 1st 2009A mechanical microkeratome (One Use-Plus SBK, Moria) created flaps with predictable dimensions that were planar and associated with extremely smooth stromal beds, and patients benefited with rapid visual recovery, in a clinical trial including 50 eyes as well as cadaveric eyes. The microkeratome was compared with a 60-kHz femtosecond laser (IntraLase, Advanced Medical Optics) in the study.