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

Coming soon: Glaucoma self-care, from home?

September 23, 2017
(HealthDay)—For many glaucoma patients, repeat trips to a doctor's office to check on their eyes can be a real pain.

Researchers identify potential biomarkers of age-related macular degeneration

September 12, 2017
Patients with any stage of age-related macular degeneration (AMD) carry signs of the disease in their blood that may be found through special laboratory tests, according to a new study led by AMD researchers based at Massachusetts ...

Researchers unlock regenerative potential of cells in the mouse retina

August 28, 2017
Cells within an injured mouse eye can be coaxed into regenerating neurons and those new neurons appear to integrate themselves into the eye's circuitry, new research shows. The findings potentially open the door to new treatments ...

Antioxidant supplement cost saving and effective for degenerative eye disease

August 24, 2017
A supplement that combines antioxidants with zinc and copper is a relatively inexpensive and effective means of halting the progression of a certain type of degenerative eye disease, concludes research published online in ...

Researchers identify key compounds to resolve abnormal vascular growth in AMD

August 21, 2017
A compound of specific bioactive products from a major family of enzymes reduced the severity of age-related macular degeneration (AMD) in a preclinical model, according to a new study led by Massachusetts Eye and Ear researchers. ...

World's blind population to soar: study

August 3, 2017
The world's blind will increase threefold from about 36 million today to 115 million in 2050 as populations expand and individuals grow ever older, researchers said Thursday.

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.