Systematic Review of Current Devices for 24-h Intraocular Pressure Monitoring

Ittoop, Sabita M; SooHoo, Jeffrey R.; Seibold, Leonard K.; Mansouri, Kaweh; Kahook, Malik Y.

doi:10.1007/s12325-016-0388-4

Cited by 48 publications

(39 citation statements)

References 52 publications

(33 reference statements)

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“…A contact lens can modify the corneal shape and thickness, which might have affected the values obtained. In this sense some authors have pointing out that the measures obtained by the CLS after several hours can be affected by these changes losing accuracy [66]. Finally, the CLS signal can be noisy and these large fluctuations should be analyzed in a subsequent study; in the current study the fluctuations due to bodily positions were minimized due to PSG.…”

Section: Plos Onementioning

confidence: 85%

Continuous intraocular pressure monitoring in patients with obstructive sleep apnea syndrome using a contact lens sensor

et al. 2020

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PurposeTo analyse nocturnal intraocular pressure (IOP) fluctuations in patients with obstructive sleep apnea syndrome (OSAS) using a contact lens sensor (CLS) and to identify associations between the OSAS parameters determined by polysomnographic study (PSG) and IOP changes. MethodProspective, observational study. Twenty participants suspected of having OSAS were recruited. During PSG study, IOP was monitored using a CLS placed in the eye of the patient. The patients were classified according to the apnea-hypopnea index (AHI) in two categories, severe (>30) or mild/moderate (<30) OSAS. We evaluated several parameters determined by the IOP curves, including nocturnal elevations (acrophase) and plateau times in acrophase (PTs) defined by mathematical and visual methods. ResultsThe IOP curves exhibited a nocturnal acrophase followed by PTs of varying extents at which the IOP remained higher than daytime measurement with small variations. We found significant differences in the length of the PTs in patients with severe OSAS compared to those with mild/moderate disease (P = 0.032/P = 0.028). We found a positive correlation between PTs and OSAS severity measured by the total number of apneic events (r = 0.681/ 0.751 P = 0.004/0.001) and AHI (r = 0.674/0.710, P = 0.004/0.002). Respiratory-related arousal and oxygen saturation also were associated significantly with the IOP PT length. PLOS ONEPLOS ONE | https://doi.org/10.1371/journal.pone.

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Section: Plos Onementioning

confidence: 85%

Continuous intraocular pressure monitoring in patients with obstructive sleep apnea syndrome using a contact lens sensor

et al. 2020

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“…Diurnal variations in intraocular pressure (IOP) are known to have an important role in glaucoma, and may also be important in myopia . Diurnal IOP can be assessed through repeated tonometry in a laboratory, or via home monitoring using hand held tonometry or continuously measuring contact lenses . IOP is known to be the greatest in the morning, and lowest before bedtime, with healthy adult subjects showing diurnal variations of approximately 4–5 mmHg .…”

Section: Introductionmentioning

confidence: 99%

Twenty‐four hour ocular and systemic diurnal rhythms in children

Ostrin

Jnawali

Carkeet

et al. 2019

Ophthalmic Physiologic Optic

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Purpose Ocular diurnal rhythms have been implicated in myopia, glaucoma, diabetes, and other ocular pathologies. Ocular rhythms have been well described in adults; however, they have not yet been fully examined in children. The goal of this study was to investigate ocular and systemic diurnal rhythms over 24 h in children. Methods Subjects, ages 5 to 14 years (n = 18), wore a light, sleep, and activity monitor for one week to assess habitual sleep/wake patterns, then underwent diurnal measurements every 4 h for 24 h. Measurements included blood pressure, heart rate, body temperature, intraocular pressure (IOP), ocular biometry, and optical coherence tomography imaging. Saliva was collected for melatonin and cortisol analysis. Mean ocular perfusion pressure was calculated from IOP and blood pressure. Central corneal thickness, corneal power, anterior chamber depth, lens thickness, vitreous chamber depth, and axial length were determined from biometry. Total retinal thickness, retinal pigment epithelium (RPE) + photoreceptor outer segment thickness, photoreceptor inner segment thickness, and choroidal thickness were determined for a 1 mm diameter centred on the fovea. Subjects’ amplitude and acrophase of diurnal variation for each parameter were determined using Fourier analysis, and mean acrophase was calculated using unit vector averaging. Results Repeated measures analysis of variance (ANOVA) showed that all parameters except anterior chamber depth exhibited significant variations over 24 h (p ≤ 0.005 for all). Axial length underwent diurnal variation of 45.25 ± 6.30 μm with an acrophase at 12.92 h, and choroidal thickness underwent diurnal variation of 26.25 ± 2.67 μm with an acrophase at 1.90 h. IOP was approximately in phase with axial length, with a diurnal variation of 4.19 ± 0.50 mmHg and acrophase at 11.37 h. Total retinal thickness underwent a significant diurnal variation of 4.09 ± 0.39 μm with an acrophase at 15.04 h. The RPE + outer segment layer was thickest at 3.25 h, while the inner segment layer was thickest at 14.95 h. Melatonin peaked during the dark period at 2.36 h, and cortisol peaked after light onset at 9.22 h. Conclusions Ocular and systemic diurnal rhythms were robust in children and similar to those previously reported in adult populations. Axial length and IOP were approximately in phase with each other, and in antiphase to choroidal thickness. These findings may have important implications in myopia development in children.

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“…These systems are of three main types: self-monitoring, temporary continuous monitoring and permanent continuous monitoring. 30 An example of a wearable device is the Triggerfish ® contact lens sensor (SENSIMED, Lausanne, Switzerland). This device can only measure relative changes rather than determine absolute pressure.…”

Section: Q: What Future Developments Can We Look Forward To In 2018?mentioning

confidence: 99%

Recent Developments in Glaucoma

Lim¹

2017

European Ophthalmic Review

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Glaucoma continues to exert a heavy disability and economic burden and is the most frequent cause of irreversible blindness worldwide. In 2015, 57.5 million people globally were affected by open-angle glaucoma and this is predicted to increase to 65.5 million by 2020. The prevalence of glaucoma increases with age in all populations and generally more men and people of Hispanic and Black race are affected. Effective treatments to lower and maintain intraocular pressure (IOP) and convenient means of continuously monitoring it remain substantial unmet medical needs. In this expert interview Kin Sheng Lim from Guy’s and St Thomas’ Hospitals, London, UK, discusses the new developments to improve this situation and are therefore of great interest to ophthalmologists and to the wider population who are at risk from glaucoma.

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Systematic Review of Current Devices for 24-h Intraocular Pressure Monitoring

Cited by 48 publications

References 52 publications

Continuous intraocular pressure monitoring in patients with obstructive sleep apnea syndrome using a contact lens sensor

Continuous intraocular pressure monitoring in patients with obstructive sleep apnea syndrome using a contact lens sensor

Twenty‐four hour ocular and systemic diurnal rhythms in children

Recent Developments in Glaucoma

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