Phakic IOL could contribute to faulty IOL power calculations
September 1st 2004San Diego-Phakic anterior chamber IOLs affect the biometric measurement of axial length, which results in clinically significant errors in IOL power calculations in patients who need to undergo cataract surgery. Gerald Zaidman, MD, described such a patient and offered suggestions for managing this complicated problem here at the American Society of Cataract and Refractive Surgery.
Clues differentiate ischemic optic neuropathy, optic neuritis
September 1st 2004Minneapolis-Differentiating ischemic optic neuropathy from optic neuritis can be problematic. The type of visual field defect, the presence or absence of pain, radiologic differences distinguishing between the two, and the degree of visual recovery, among others, may be helpful clues, Howard D. Pomeranz, MD, PhD, suggested.
Forms of amblyopia can be identified by varying patterns of visual deficits
September 1st 2004San Francisco-There are distinct forms of amblyopia characterized by varying patterns of visual deficits. Both blurred imagery and the loss of binocular function can cause amblyopia and determine the pattern of visual deficit, said Suzanne P. McKee, PhD, who reported on the results of an NEI-sponsored study analyzing a comprehensive set of visual function data collected in a large group of patients with amblyopia.
AAO, SOE to highlight cataracts, eye disease
September 1st 2004San Francisco-A discussion of medical policy in the United States and around the world by the administrator and chief executive officer for the Center for Medicare and Medicaid Services will highlight the joint meeting of the American Academy of Ophthalmology and the European Society of Ophthalmology meeting next month.
Refocus Group reports promising initial results
September 1st 2004Dallas-Refocus Group Inc., a medical device company engaged in the research and development of treatments for eye disorders, announced promising preliminary data from the company's ongoing phase II clinical trials for the treatment of presbyopia.
Disposable keratome head offers safe myopic treatment
September 1st 2004San Diego-The M2 130-?m disposable head (Moria) performed well in a small series of patients who underwent LASIK for the treatment of myopia and myopic astigmatism. The faster surgical path used with this device may be responsible for induction of less higher-order aberration.
Mast cell stabilizers control ocular itching to cat allergen
August 15th 2004Fort Lauderdale, FL-Two pilot studies have shown that single doses of olopatadine HCl ophthalmic solution 0.1% (Patanol, Alcon Laboratories) and pemirolast potassium ophthalmic solution 0.1% (Alamast, Santen Inc./Johnson and Johnson) were comparable in reducing and controlling ocular itching in cat-sensitive individuals, according to Jason S. Rothman, MD, Cornea fellow, New England Eye Center, Tufts University School of Medicine, Boston.
Olopatadine 0.2% provides extended efficacy during peak pollen periods
August 15th 2004Fort Lauderdale, FL-A new formulation of an anti-allergy medication, olopatadine HCl ophthalmic solution 0.2% (Patanol II, Alcon Laboratories), provides two important advantages. It allows once-daily dosing, which increases patient compliance, and maintains the level of effectiveness of the original formulation, olopatadine 0.1%, during peak pollen seasons for an extended period up to 24 hours, according to Jack Greiner, DO, PhD.
New procedure for NAION appears promising
August 15th 2004New Orleans-Transvitreal optic neurotomy, a space-creating procedure, may be a beneficial treatment for patients with nonarteritic anterior ischemic optic neuropathy (NAION) because it reduces constriction of ocular tissue and prevents necrosis of functioning nerve fibers.
OCT offers promising new uses for neuro-ophthalmology
August 15th 2004Boston-Optical coherence tomography (OCT), a relatively new technology introduced in 1995, has been getting increasingly greater attention as its usefulness is better appreciated in the areas of retina and glaucoma. Joseph F. Rizzo III, MD, discussed the technology as it applies to neuro-ophthalmic practice.
Ocular motility testing an important part of examination
August 15th 2004Los Angeles-"An assessment of ocular motility is a component of a comprehensive ophthalmologic examination. Therefore, it should be carried out even in the absence of complaints referable to the ocular motor system," said Howard R. Krauss, MD, clinical professor of ophthalmology, Jules Stein Eye Institute, and clinical professor of neurosurgery, UCLA, Los Angeles. "More detailed ocular motor tests can be performed when clinically indicated."
Visual loss of amaruosis fugax can be diagnosed in office
August 15th 2004New York-Differentiating the classic embolic visual loss of amaurosis fugax from the numerous other causes of transient visual loss involves careful evaluation. Mark J. Kupersmith, MD, described how to differentiate among the various causes of transient visual disturbance and target the necessary diagnostic procedures.
Early diagnosis essential in cerebrovascular dissections
August 15th 2004Philadelphia-Cerebrovascular dissection represents a life-and-death situation for the patient. Ophthalmologists should be able to recognize this potentially catastrophic diagnosis and initiate emergent treatment, said Nicholas Volpe, MD.
Sleep apnea linked to some ischemic optic neuropathy cases
August 15th 2004Dallas-A sleep study should be performed in patients who have an elevated C-reactive protein (CRP) level and biopsy-negative ischemic optic neuropathy. Elevated CRP may be a marker for sleep apnea-associated optic neuropathy, according to John G. McHenry, MD.
Glaucoma drug may be useful approach for blepharospasm
August 15th 2004Monterey Park, CA-Latanoprost (Xalatan, Pfizer) may be an alternative treatment for blepharospasm. Ted C. Wei Jr., MD, reported that 75% of his patients had moderate to complete resolution of symptoms after latanoprost was prescribed.
Rule of pupil still applies to complete third-nerve palsy
August 15th 2004St. Louis-When the rule of the pupil was first described in 1958 by Wilbur Rucker, MD, there were specific guidelines to follow if the pupillary reaction was normal and if it was not; in the first case, paralysis is likely due to occlusive vascular disease and in the second case to aneurysm.