Eyeworld

EW MEETING REPORTER 80 June 2017 Sponsored by Reporting from the 2017 ASCRS•ASOA Symposium & Congress, May 5–9, 2017, Los Angeles measures pressure directly and does so through an internal, continuous device. Implandata Ophthalmic Products (Hannover, Germany) is developing the wireless intraocular pressure transducer (WIT), which is placed after phaco in the capsular bag. The incision to implant this device is large—5.5 mm—initial inflammation occurs, and in a small study, all patients experienced pupil- lary distortion. "If we're going to have some- thing in the eye, I think we all un- derstand it has to fit perfectly … and be small enough so that it makes sense and doesn't cause any inflam- mation," Dr. Moster said. This is where she introduced a sensor in development by Qura (Medway, Massachusetts). This device is designed to be implantable for 24/7 IOP monitoring. It is pow- ered wirelessly by the patient walk- ing in proximity of a salt shaker-size pod for a few minutes at least once every 48 hours. The data is down- loaded during this time as well. single IOP measurements for the development of treatment target goals and evaluation of treatment strategies. Measuring IOP just once every 3 months doesn't cut it," Dr. Moster said. "So, what do we need to do? We need to measure pressure all the time, but how are we going to do this?" Triggerfish (Sensimed, Lausanne, Switzerland) was the first 24-hour monitoring system worn by the pa- tient as a contact lens with wireless transmission of data to an antenna worn by the patient. Triggerfish doesn't measure IOP directly, rather it measures changes in volume of the eye and other ocular biome- chanical properties of the cornea. Dr. Moster presented several studies that have received valuable infor- mation using Triggerfish, but is the system design and its measurements good enough? "Probably not, but it is certainly a start," Dr. Moster said, answering her own question. Dr. Moster said that what the field needs is a sensor that Stephen A. Obstbaum lecturer describes the future of 24/7 IOP monitoring A highlight of ASCRS Glaucoma Day was the 2017 Stephen A. Obstbaum, MD, Honored Lecture presented by Marlene Moster, MD, Philadelphia. In his introduction, in addi- tion to listing Dr. Moster's dozens of professional accolades, Douglas Rhee, MD, Cleveland, program chair of Glaucoma Day, described her as someone he sees as "courageous, fearless … and just a touch of great crazy—and I said, I wanted to be just like her." Dr. Moster focused her presenta- tion on "the holy grail," that being 24/7 IOP monitoring. How much does IOP fluctuate over the course of the day? Does it follow a pattern? Does it fluctuate at night? The ques- tions continue and, as Dr. Moster put it, there is a lot we don't know. Studies have shown, at least, that IOP is higher at night. "Generations of ophthalmol- ogists have been trained to rely on Reporting from the 2017 ASCRS•ASOA Symposium & Congress Sponsored by

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