Transcript Document 7656799

The Triggerfish Lens
and Glaucoma
Monitoring
By Samuel Karnes
Glaucoma
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Intraocular pressure on the optic nerve
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Blindness
Four types
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Chronic (open angle)
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Angle Closure (acute)
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Congenital
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Secondary
Triggerfish Lens
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Sensimed AG
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Strain gauges
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around the outer edge
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Micro-processor
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Antenna
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Radiofrequency waves
Bluetooth
Current Glaucoma Tests
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Tonometry Procedures
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Eye is numbed with numbing drops
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Slit-lamp is moved forward until tonometer touches the eye
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Handheld device touches the eye and takes pressure reading
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Pressure is read from change in light reflections when air
hits the eye (Air Puff)
Each procedure only reads IOP for a few
seconds
Advantages
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24 hour IOP monitoring
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Silicon hydrogel (used for regular contact lens)
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Easy to wear
Non-Invasive
Disadvantages
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Not available in U.S. currently
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Each lens only provides a single use
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Common adverse effects
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Eye irritation
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Blurred vision
Testing Results
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Effective results for 36 of 40 patients
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82% blurred vision
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80% inflammation and reddening of the eye
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Symptoms usually went away within 24 hours
Conclusion
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Lens collects more data than current tests
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Seconds of monitoring vs. hours
Long term
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More accurate diagnoses
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Better information for finding a possible cure
Questions?
Refrences
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[1] Gravitz, Lauren. "Mobile Computing Is Just Getting Started." MIT Technology Review. MIT, 31 Mar. 2010.
Web. <http://www.technologyreview.com/news/418247/glaucoma-test-in-a-contact-lens/>.
[2] Haughton, Alison N. "Tonometry." Health Facts. Ebsco, n.d. Web.
<http://www.beliefnet.com/healthandhealing/getcontent.aspx?cid=100915>.
[3] "Sensimed Triggerfish." Sensimed Triggerfish | Sensimed. Sensimed AG, 2013. Web.
<http://www.sensimed.ch/en/products/sensimed-triggerfishr.html>.
[4] "Contact Lens Measures Intraocular Pressure." Contact Lens Headlines RSS. Access Media Group LLC, 11
Feb. 2011. Web. <http://www.contactlensheadlines.com/6447/triggerfish/>.
[5] Gever, John. "Contact Lens Promising in Glaucoma." Contact Lens Promising in Glaucoma. MedPage Today,
13 Aug. 2012. Web. <http://www.medpagetoday.com/Ophthalmology/Glaucoma/34180>.
[6] "Glaucoma." Glaucoma. U.S. National Library of Medicine, 14 Sept. 2011. Web.
<http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0002587/>.