An RFID-based on-lens sensor system for long-term IOP monitoring

Hsu, Shun-Hsi; Chiou, Jin-Chern; Liao, Yu-Te; Yang, T. C.; Kuei, Cheng-Kai; Wu, Tsung-Wei; Huang, Yu‐Chieh

doi:10.1109/embc.2015.7320133

Cited by 8 publications

(5 citation statements)

References 8 publications

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“…One promising method to achieve this is by integrating an RFID circuit and antenna into the SCL. As explained in the Powering section, the RFID method allows for operation by receiving energy and converting the acquired sensor information into a bit-stream method to store and receive the information when near the receiver. , The wireless data transmission method of the SCL needs to be updated to a method that can operate for 24 h, maintain body stability, and enable further reception in the future.…”

Section: Technologies Overviewmentioning

confidence: 99%

Smart Contact Lenses as Wearable Ophthalmic Devices for Disease Monitoring and Health Management

Seo,

Chung,

Kwon

et al. 2023

Chem. Rev.

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The eye contains a complex network of physiological information and biomarkers for monitoring disease and managing health, and ocular devices can be used to effectively perform point-of-care diagnosis and disease management. This comprehensive review describes the target biomarkers and various diseases, including ophthalmic diseases, metabolic diseases, and neurological diseases, based on the physiological and anatomical background of the eye. This review also includes the recent technologies utilized in eyewearable medical devices and the latest trends in wearable ophthalmic devices, specifically smart contact lenses for the purpose of disease management. After introducing other ocular devices such as the retinal prosthesis, we further discuss the current challenges and potential possibilities of smart contact lenses.

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Section: Technologies Overviewmentioning

confidence: 99%

Smart Contact Lenses as Wearable Ophthalmic Devices for Disease Monitoring and Health Management

Seo,

Chung,

Kwon

et al. 2023

Chem. Rev.

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“…Continuous IOP monitoring methods are being developed for humans in the form of contact lens sensors [25][26][27][28][29][30][31] and implantable intraocular sensors [32][33][34] (Figure 5). The Triggerfish (Sensimed, Lausanne Switzerland) is CE marked and FDA approved for continuous monitoring of spontaneous changes in the eye, but it does not measure true IOP.…”

Section: Future Ideasmentioning

confidence: 99%

Current methods and new approaches to assess aqueous humor dynamics

Toris

Gagrani

Ghate

2021

Expert Review of Ophthalmology

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Introduction: Aqueous humor and its dynamics (AHD) serve numerous functions to sustain ocular health and clear vision. Current methods to assess AHD have led to improved understanding of ocular physiology, pathologies caused by abnormal intraocular pressures (IOP), and treatments to return IOP to healthy levels. However, the assumptions and limitations inherent in these methods have been problematic. New methods on the horizon are showing promise to greatly advance the field.Areas covered: This review summarizes AHD assessment techniques in use today including the noninvasive methods of fluorophotometry, tonometry, tonography, venomanometry, and invasive methods of cannulation, infusion, dissection. It also mentions emerging methods utilizing advanced imaging methods, smart phones, cameras, and software. Expert opinion: Soon new techniques will become available to measure each parameter and even subparts of each parameter of AHD with increased speed, accuracy, and safety. Along with these new methods and the data they generate could emerge the next version of the Goldmann Equation. These new methods would make AHD an important tool in the clinic for precision medicine and in the lab for exploring AHD on a new level.

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“…Eye phantoms, which are designed to reproduce characteristics of the human eye, have been developed for various purposes: prosthetics, surgery simulation [1][2][3] , and testing and evaluation of diagnostic instruments [4][5][6][7] , including the optical coherence tomography (OCT) machine and the tonometer. The shapes of eye phantoms vary with their purposes.…”

Section: Introductionmentioning

confidence: 99%

“…Hence, it is invaluable to invent an eye phantom to mimic the structural deformation as well as the tension accompanying a change in IOP. Eye phantoms [6][7][8][9] have been developed specifically for mimicking the human cornea. Anthony et al 6 developed an eye phantom used for testing of a glaucoma diagnosis device, that was similar to a contact lens.…”

Section: Introductionmentioning

confidence: 99%

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Development of Eye Phantoms for Mimicking the Structural Deformation of the Human Cornea Accompanied With Intraocular Pressure Alteration

Cho

Jeoung

2021

Preprint

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We developed a fully continuous eye phantom to better understand structural deformation of the cornea under varying intraocular pressure (IOP). The IOP-induced deformation and tension of the eye phantom were investigated using optical coherence tomography and non-contact tonometer readings, respectively. A fixed-cornea eye phantom, which featured a soft cornea, was also used for comparison. We evaluated the corneal structural changes between the two different types of eye phantoms by estimating the central corneal thickness (CCT) and corneal radius of curvature (CRC). For the eye phantom with an initial CCT of 0.55 mm, which is close to the average human CCT, CRC of the fully continuous eye phantoms showed a positive correlation to true IOP, while the CRC of a fixed-cornea eye phantom had a negative correlation. Non-contact tonometry readings for fixed-cornea eye phantoms were higher than those of full-eye phantoms due to the structural and mechanical characteristics. Considering the results from in vitro studies on enucleated human eyeballs, a fully continuous eye phantom is a more suitable choice for mimicking human IOP than a fixed-cornea eye phantom. Use of a more reliable eye phantom for accurate estimation of IOP using tonometry may eventually improve the accuracy of glaucoma screening.

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An RFID-based on-lens sensor system for long-term IOP monitoring

Cited by 8 publications

References 8 publications

Smart Contact Lenses as Wearable Ophthalmic Devices for Disease Monitoring and Health Management

Smart Contact Lenses as Wearable Ophthalmic Devices for Disease Monitoring and Health Management

Current methods and new approaches to assess aqueous humor dynamics

Development of Eye Phantoms for Mimicking the Structural Deformation of the Human Cornea Accompanied With Intraocular Pressure Alteration

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