In a study published in the April issue of the American Journal of Ophthalmology, researchers found MRSA infections in the eyes of 12 patients after refractive surgery.
These are the first cases of MRSA infectious keratitis following refractive surgery, the first reports of MRSA keratitis after refractive surgery in patients with no known exposure to a healthcare facility, the first report of MRSA keratitis after a laser in situ keratomileusis (LASIK) enhancement, and the first reports of MRSA keratitis after prophylaxis with fourth generation fluoroquinolones.
Colonization of MRSA has been found in 1.5% of the general population, but as many as 9.4% of those were exposed to a healthcare facility. However, strains of MRSA are emerging in the community. These so-called community strains tend to be resistant only to beta-lactam antibiotics, unlike the hospital strains, which usually demonstrate multiple drug resistance. Community-acquired MRSA is becoming a significant problem, with the prevalence of MRSA among community isolates expected to reach as high as 25% in the next decade.
The authors cite the case of a male nurse who underwent an “uneventful” bilateral LASIK procedure that resulted in 20/20 (right eye) and 20/70 (left eye) visual acuity. Within 2 weeks, he had developed an infection in his left eye that grew worse, despite treatment, until his vision was only 20/400. When the infection was cultured and found to be MRSA, his antibiotics were changed and his vision recovered to 20/200 over the next two weeks. The patient is awaiting further surgical treatment.
Writing in the article, Eric D. Donnenfeld, MD, advises that, “MRSA infectious keratitis is a potentially serious complication following refractive surgery. Healthcare workers may develop keratitis from microbes associated with nosocomial infection. In addition, surgeons should now be vigilant for community-acquired MRSA keratitis. All patients should be informed of the risk factors and warning signs of infectious keratitis and need to be advised to seek medical attention immediately if they develop signs or symptoms of infectious keratitis. A high degree of suspicion, coupled with prompt and appropriate treatment, may result in improved visual recovery.”
The article is “Methicillin-Resistant Staphylococcus aureus Infectious Keratitis Following Refractive Surgery” by Renée Solomon, MD, Eric D. Donnenfeld, MD, Henry D. Perry, MD, Roy S. Rubinfeld, MD, Michael Ehrenhaus, MD, John R. Wittpenn, Jr, MD, Kerry D. Solomon, MD, Edward E. Manche, MD, Majid Moshirfar, MD, Dennis C. Matzkin, MD, Reza M. Mozayeni, MD, and Robert K. Maloney, MD.
The authors are affiliated with Ophthalmic Consultants of Long Island, Rockville Centre, New York (R.S., E.D.D., H.D.P., J.R.W.); Department of Ophthalmology, Manhattan Eye, Ear and Throat Hospital, New York, New York (E.D.D.); Washington Eye Physicians and Surgeons, Chevy Chase, Maryland; and Georgetown University Medical Center, and the Washington Hospital Center, Washington, DC (R.S.R.); Saint Vincent Catholic Medical Center of Brooklyn and Queens, St Joseph’s Hospital, Flushing, New York (M.E.); Department of Ophthalmology, State University of New York at Stony Brook, Stony Brook, New York (J.R.W.); Storm Eye Institute, Medical University of South Carolina, Charleston, South Carolina (K.D.S.); Department of Ophthalmology, Stanford University School of Medicine, Stanford, California (E.E.M.); Moran Eye Center, University of Utah, Salt Lake City, Utah (M.M.); EyeSight Laser Center, Atlanta, Georgia (D.C.M.); Providence Eye and Laser Specialists, Charlotte, North Carolina (R.M.M.); and Maloney Vision Institute, Los Angeles, California (R.K.M.).
The article appears in the American Journal of Ophthalmology, Volume 143, Issue 4, (April 2007), and is published by Elsevier.
Maureen Hunter | alfa
Finnish research group discovers a new immune system regulator
23.02.2018 | University of Turku
Minimising risks of transplants
22.02.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
A newly developed laser technology has enabled physicists in the Laboratory for Attosecond Physics (jointly run by LMU Munich and the Max Planck Institute of Quantum Optics) to generate attosecond bursts of high-energy photons of unprecedented intensity. This has made it possible to observe the interaction of multiple photons in a single such pulse with electrons in the inner orbital shell of an atom.
In order to observe the ultrafast electron motion in the inner shells of atoms with short light pulses, the pulses must not only be ultrashort, but very...
A group of researchers led by Andrea Cavalleri at the Max Planck Institute for Structure and Dynamics of Matter (MPSD) in Hamburg has demonstrated a new method enabling precise measurements of the interatomic forces that hold crystalline solids together. The paper Probing the Interatomic Potential of Solids by Strong-Field Nonlinear Phononics, published online in Nature, explains how a terahertz-frequency laser pulse can drive very large deformations of the crystal.
By measuring the highly unusual atomic trajectories under extreme electromagnetic transients, the MPSD group could reconstruct how rigid the atomic bonds are...
Quantum computers may one day solve algorithmic problems which even the biggest supercomputers today can’t manage. But how do you test a quantum computer to...
For the first time, a team of researchers at the Max-Planck Institute (MPI) for Polymer Research in Mainz, Germany, has succeeded in making an integrated circuit (IC) from just a monolayer of a semiconducting polymer via a bottom-up, self-assembly approach.
In the self-assembly process, the semiconducting polymer arranges itself into an ordered monolayer in a transistor. The transistors are binary switches used...
Breakthrough provides a new concept of the design of molecular motors, sensors and electricity generators at nanoscale
Researchers from the Institute of Organic Chemistry and Biochemistry of the CAS (IOCB Prague), Institute of Physics of the CAS (IP CAS) and Palacký University...
15.02.2018 | Event News
13.02.2018 | Event News
12.02.2018 | Event News
23.02.2018 | Physics and Astronomy
23.02.2018 | Health and Medicine
23.02.2018 | Physics and Astronomy