Microfluidic contact lenses for continuous non-invasive intraocular pressure monitoring

2019 ◽  
Author(s):  
Hongbin An ◽  
Liangzhou chen ◽  
Xiaojun Liu ◽  
Bin Zhao
Keyword(s):  
Intraocular Pressure ◽  
Contact Lenses ◽  
Pressure Monitoring ◽  
Non Invasive

Microfluidic contact lenses for unpowered, continuous and non-invasive intraocular pressure monitoring

2019 ◽  
Vol 295 ◽  
pp. 177-187 ◽  
Author(s):  
Hongbin An ◽  
Liangzhou Chen ◽  
Xiaojun Liu ◽  
Bin Zhao ◽  
Hong Zhang ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Contact Lenses ◽  
Pressure Monitoring ◽  
Non Invasive

scholarly journals A contact lens promising for non-invasive continuous intraocular pressure monitoring

RSC Advances ◽  
2019 ◽  
Vol 9 (9) ◽  
pp. 5076-5082 ◽  
Author(s):  
Yu Pang ◽  
Yuxing Li ◽  
Xuefeng Wang ◽  
Chenjie Qi ◽  
Yi Yang ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Contact Lens ◽  
High Performance ◽  
Bridge Circuit ◽  
Wheatstone Bridge ◽  
Pressure Monitoring ◽  
Non Invasive

A contact lens with a Wheatstone bridge circuit can achieve high-performance detection of IOP variation.

Effect of variations of corneal physiology on novel non-invasive intraocular pressure monitoring soft contact lens

2021 ◽  
Vol 23 (1) ◽  
Author(s):  
Angelica Campigotto ◽  
Ankur Ralhan ◽  
Rick Helgason ◽  
Robert J. Campbell ◽  
Yongjun Lai
Keyword(s):  
Intraocular Pressure ◽  
Contact Lens ◽  
Pressure Monitoring ◽  
Soft Contact ◽  
Non Invasive ◽  
Soft Contact Lens

Non-invasive intraocular pressure monitoring with a contact lens engineered with a nanostructured polymeric sensing film

2011 ◽  
Vol 170 (1-2) ◽  
pp. 36-43 ◽  
Author(s):  
Vladimir Laukhin ◽  
Irene Sánchez ◽  
Ana Moya ◽  
Elena Laukhina ◽  
Raul Martin ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Contact Lens ◽  
Pressure Monitoring ◽  
Non Invasive

Highly Transparent and Sensitive Graphene Sensors for Continuous and Non-invasive Intraocular Pressure Monitoring

2020 ◽  
Vol 12 (16) ◽  
pp. 18375-18384 ◽  
Author(s):  
Jiandong Xu ◽  
Tianrui Cui ◽  
Thomas Hirtz ◽  
Yancong Qiao ◽  
Xiaoshi Li ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Pressure Monitoring ◽  
Non Invasive

scholarly journals Non-invasive Intraocular pressure monitoring with contact lens

2019 ◽  
pp. bjophthalmol-2018-313714 ◽  
Author(s):  
Angelica Campigotto ◽  
Stephane Leahy ◽  
Guowei Zhao ◽  
Robert J Campbell ◽  
Yongjun Lai
Keyword(s):  
Intraocular Pressure ◽  
Contact Lens ◽  
Continuous Monitoring ◽  
Vision Loss ◽  
Contact Lenses ◽  
Fluid Movement ◽  
Eye Model ◽  
Non Invasive ◽  
Cyclical Fluctuations ◽  
Pressure Catheter

BackgroundGlaucoma is the second leading cause of blindness in the world and the first leading cause of irreversible vision loss. Currently, the primary methodology of testing for the intraocular pressure (IOP) is during clinical office hours, which only provide a limited amount of information on the trends and fluctuations of the IOP. Therefore, a continuous monitoring system is required to properly determine the peaks of pressure and to negate any false results obtained by sparse, clinic hour testing. The objective of this study is to determine the ability of a newly designed contact lens with an embedded microchannel, to accurately measure the fluctuations in the IOP.MethodsExperimentation was completed on fresh enucleated porcine eyes. The contact lens was placed on the porcine eye and utilising a camera the fluid movement, within the microchannel in the contact lens, was recorded. A micro-pressure catheter, threaded into the centre of the vitreous chamber, recorded the true IOP and was compared with the displacement of the indicator fluid within the microchannel.ResultsThe contact lenses showed a consistent linear responsiveness to changes in IOP and robust to the effects of anatomical differences among eyes. The indicator fluid had an average fluid movement of 28 um/mm Hg between all the trials. Additionally, the devices showed the ability to measure both increases and decreases in IOP during cyclical fluctuations.ConclusionThe described inexpensive and non-invasive sensor is able to reliably monitor the IOP changes based on porcine eye model.

Smart Contact Lenses with a Transparent Silver Nanowire Strain Sensor for Continuous Intraocular Pressure Monitoring

2021 ◽  
Author(s):  
Tae Yeon Kim ◽  
Sangbaie Shin ◽  
Hyunsik Choi ◽  
Sang Hoon Jeong ◽  
David Myung ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Contact Lenses ◽  
Strain Sensor ◽  
Silver Nanowire ◽  
Pressure Monitoring

scholarly journals Non Invasive Sensor for Continuous Intraocular Pressure Monitoring

2018 ◽  
Vol 30 (12) ◽  
pp. 2811
Author(s):  
Shujing Su ◽  
Lei Zhang ◽  
Gao Fei ◽  
Lei Fan ◽  
Helei Dong ◽  
...  
Keyword(s):  
Intraocular Pressure ◽  
Pressure Monitoring ◽  
Non Invasive
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