ArticleInvestigative ophthalmology & visual science2017
The Magnitude and Time Course of IOP Change in Response to Body Position Change in Nonhuman Primates Measured Using Continuous IOP Telemetry.
Article in Investigative ophthalmology & visual science, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.
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Who cites it
20 citing papers in PubMed, 30 citations in OpenAlex.
- Postural effects on blood pressure, intraocular pressure, and ocular perfusion pressure in patients with spinal cord injury.The journal of spinal cord medicine · 2025Article
- Continuous intraocular pressure variations following positional transitions in normal subjects and open angle glaucoma patients using a contact lens sensor system.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2025Article
- Continuous Wireless Telemetric Measurement of Intraocular Pressure (IOP), Ocular Perfusion Pressure (OPP), and Cerebrospinal Fluid Pressure (CSFP) in Nonhuman Primates (NHPs).Methods in molecular biology (Clifton, N.J.) · 2025Article
- The impact of different postures on acute intraocular pressure and accommodation responses during reading.BMC ophthalmology · 2024Article
- Comparative analysis of traction forces in normal and glaucomatous trabecular meshwork cells within a 3D, active fluid-structure interaction culture environment.Acta biomaterialia · 2024Article
- Characterization of intraocular pressure variability in conscious rats.Experimental eye research · 2024Article
- Influence of the body positions adopted for resistance training on intraocular pressure: a comparison between the supine and seated positions.Graefe's archive for clinical and experimental ophthalmology = Albrecht von Graefes Archiv fur klinische und experimentelle Ophthalmologie · 2023Article
- Diurnal Variation and Effects of Dilation and Sedation on Intraocular Pressure in Infant Rhesus Monkeys.Current eye research · 2023Article
- A portable feedback-controlled pump for monitoring eye outflow facility in conscious rats.PloS one · 2023Article
- The Effect of Intraocular Pressure Load Boundary on the Biomechanics of the Human Conventional Aqueous Outflow Pathway.Bioengineering (Basel, Switzerland) · 2022Article
- Viscoelastic Biomechanical Properties of the Conventional Aqueous Outflow Pathway Tissues in Healthy and Glaucoma Human Eyes.Journal of clinical medicine · 2022Article
- Biomechanics of human trabecular meshwork in healthy and glaucoma eyes via dynamic Schlemm's canal pressurization.Computer methods and programs in biomedicine · 2022Article
- Effects of acute stress, general anesthetics, tonometry, and temperature on intraocular pressure in rats.Experimental eye research · 2021Article
- Comparison of extraocular and intraocular pressure transducers for measurement of transient intraocular pressure fluctuations using continuous wireless telemetry.Scientific reports · 2020Article
- Effect of Body Position on Intraocular Pressure (IOP), Intracranial Pressure (ICP), and Translaminar Pressure (TLP) Via Continuous Wireless Telemetry in Nonhuman Primates (NHPs).Investigative ophthalmology & visual science · 2020Article
- Intra-Subject Variability and Diurnal Cycle of Ocular Perfusion Pressure as Characterized by Continuous Telemetry in Nonhuman Primates.Investigative ophthalmology & visual science · 2020Article
- Full-field displacement measurement of corneoscleral shells by combining multi-camera speckle interferometry with 3D shape reconstruction.Journal of the mechanical behavior of biomedical materials · 2020Article
- Transient Intraocular Pressure Fluctuations: Source, Magnitude, Frequency, and Associated Mechanical Energy.Investigative ophthalmology & visual science · 2019Article
- Posture-Dependent 24-Hour Intraocular Pressure Fluctuation Patterns in an Intraocular Hypertension Monkey Model.Translational vision science & technology · 2019Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
Abstract
Purpose: To study the effect and time course of body position changes on IOP in nonhuman primates. Methods: We recorded continuous bilateral IOP measurements with a wireless telemetry implant in three rhesus macaques in seven different body positions. IOP measurements were acquired in the seated-upright, standing, prone, supine, right and left lateral decubitus positions (LDPs), and head-down inverted positions. Continuous IOP was recorded for 90 seconds in each position before returning to a supine reference position until IOP stabilized; measurements were averaged after IOP stabilized at each position. Results: Head-down inversion increased IOP an average of 8.9 mm Hg, compared to the supine reference. In the LDP, IOP decreased an average of 0.5 mm Hg in the nondependent eye (i.e., the higher eye), while the fellow dependent (i.e., lower) eye increased an average of 0.5 mm Hg, compared to supine reference. Standing and seated positions decreased IOP 1.5 and 2.2 mm Hg, respectively, compared with supine reference. IOP changes occurred within 4 to 15 seconds of a body position change, and timing was affected by the speed at which body position was changed. Compared to the IOP in the supine position, the IOP in the inverted, prone, and seated positions was significantly different (P = 0.0313 for all). The IOP in the standing position was not statistically different from the IOP in the supine position (P = 0.094). In addition, the IOP was significantly different between the nondependent eye and the dependent eye in the LDPs compared to the supine position (P = 0.0313). Conclusions: Body position has a significant effect on IOP and those changes persist over time.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.