Contact lens sensor measures 24-hour intraocular pressure

August 15, 2012
Contact lens sensor measures 24-hour intraocular pressure
A contact lens sensor provides safe and tolerable 24-hour monitoring of intraocular pressure patterns in patients with or suspected of having glaucoma, according to research published online Aug. 13 in the Archives of Ophthalmology.

(HealthDay) -- A contact lens sensor (CLS) provides safe and tolerable 24-hour monitoring of intraocular pressure (IOP) patterns in patients with or suspected of having glaucoma, according to research published online Aug. 13 in the Archives of Ophthalmology.

In an effort to evaluate the safety, tolerability, and reproducibility of measurements during 24-hour IOP monitoring via CLS, Kaweh Mansouri, M.D., M.P.H., of the Hamilton Center at the University of California San Diego, and colleagues conducted a study involving 40 patients (mean age, 55.5 years) who were suspected of having (21 patients) or had been diagnosed with glaucoma (19 patients). Two separate 24-hour monitoring sessions were conducted one week apart (S1 and S2).

The researchers found that the main adverse events associated with the IOP-monitoring CLS included blurred vision in 82 percent, conjunctival hyperemia in 80 percent, and superficial punctate keratitis in 15 percent. There was no significant difference in the mean visual analogue scale score in the two sessions (27.2 mm in S1 and 23.8 mm in S2), with the overall correlation between the sessions being 0.59 (0.51 for patients with no and 0.63 for those with medication).

"This study reveals that CLS provides a safe and well-tolerated approach to 24-hour IOP monitoring in glaucoma patients," the authors write. "The 24-hour IOP patterns seem to be fairly reproducible when repeated in the short term. The availability of continuous 24-hour IOP monitoring holds the promise to improve glaucoma care."

Several authors disclosed to medical device and pharmaceutical companies, including Sensimed, which funded the study and manufactures the CLS used in the study.

Explore further: Research identifies risk factors associated with progression of glaucoma

More information: Abstract
Full Text (subscription or payment may be required)

Related Stories

Research identifies risk factors associated with progression of glaucoma

May 9, 2011
Elevated pressure inside the eye, cornea thinning, and visual field loss are all markers that glaucoma may progress, according to a report in the May issue of Archives of Ophthalmology.

Home measurement of eye pressure in children may improve management of glaucoma

March 7, 2012
Measurement of pressure within the eye, or intraocular pressure (IOP), is known to fluctuate throughout the day, and wide swings in patients with glaucoma are believed to be related to the progression of the disease, which ...

Physical fitness could have a positive effect on eye health

October 24, 2011
Physical activity may be what the doctor orders to help patients reduce their risk of developing glaucoma. According to a recently published scientific paper, higher levels of physical exercise appear to have a long-term ...

New research characterizes glaucoma as neurologic disorder rather than eye disease

March 7, 2012
A new paradigm to explain glaucoma is rapidly emerging, and it is generating brain-based treatment advances that may ultimately vanquish the disease known as the "sneak thief of sight." A review now available in Ophthalmology, ...

Mayo Clinic detective work shows possible side effect in macular degeneration drug

October 24, 2011
Two major drug trials conclude there was little risk from a drug aimed at age-related macular degeneration. Yet a Mayo Clinic ophthalmologist began to note something concerning in some of her patients: an increase in pressure ...

Recommended for you

Study advances gene therapy for glaucoma

January 16, 2018
While testing genes to treat glaucoma by reducing pressure inside the eye, University of Wisconsin-Madison scientists stumbled onto a problem: They had trouble getting efficient gene delivery to the cells that act like drains ...

New study offers added hope for patients awaiting corneal transplants

January 9, 2018
New national research led by Jonathan Lass of Case Western Reserve University School of Medicine has found that corneal donor tissue can be safely stored for 11 days before transplantation surgery to correct eye problems ...

Diabetic blindness caused and reversed "trapped" immune cells in rodent retinas

January 3, 2018
Johns Hopkins researchers have discovered a cell signaling pathway in mice that triggers vision loss in patients with diabetic retinopathy and retinal vein occlusion – diseases characterized by the closure of blood vessels ...

Ophthalmologists increasingly dissatisfied with electronic health records

December 29, 2017
Ophthalmologists' use of electronic health records (EHR) systems for storing and accessing patients' medical histories more than doubled between 2006 and 2016, while their perceptions of financial and clinical productivity ...

Higher omega-3 fatty acid intake tied to lower glaucoma risk

December 26, 2017
(HealthDay)—Increased daily intake of ω-3 fatty acids is associated with lower odds of glaucoma, but higher levels of total polyunsaturated fatty acid (PUFA) intake are associated with higher odds of developing glaucoma, ...

Protein analysis allows for treatment of eye-disease symptoms with existing drugs

December 21, 2017
Demonstrating the potential of precision health, a team led by a researcher at the Stanford University School of Medicine has matched existing drugs to errant proteins expressed by patients with a rare eye disease.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.