Effect of Body Positions on Intra Ocular Pressure

H, Rajendra D

doi:10.18410/jebmh/2015/807

Cited by 2 publications

(4 citation statements)

References 8 publications

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“…It was lowest when subjects changed from a recumbent to a sitting position (P<0.001). These findings were similar to those from previous studies [25][26]30] that showed that IOP variation associated with posture in normal subjects was lower in the sitting compared to supine positions.…”

Section: Measurement Of Iop In Various Posturessupporting

confidence: 92%

“…Our study showed a greater increase in the mean IOP variations of 4.03±0.13 mm Hg upon changing from a sitting to a supine position compared to lower values observed by Rajendra [25] and Jorge et al [28] which were (2.79±0.01 and 2.47±2.12 mm Hg in the same positions respectively. This greater increase in the mean difference of posture induced IOP variations observed in this study could be as a result of age differences of subjects studied.…”

Section: Measurement Of Iop In Various Posturescontrasting

confidence: 63%

“…The results of the present study corroborated with reports of Liu et al [31] , which documented a mean IOP increase of 6 mm Hg from sitting to a supine position in normal subjects during a 24h monitoring of IOP. The increase in IOP which occurred on adopting a supine from a sitting position has been attributed to increase in episcleral venous pressure and increase in resistance to aqueous flow [25,[32][33] .…”

Section: Measurement Of Iop In Various Posturesmentioning

confidence: 99%

“…Inclusion Criteria POAG was diagnosed [1,7,[23][24] if the patient met the following criteria: 1) open anterior chamber angle (Shaffer's grade 3 or 4 in all quadrants); 2) raised IOP (≥22 mm Hg), this is the true IOP after accounting for central corneal thickness (via pachymetry); 3) a vertical cupdisc ratio of ≥0.6 or asymmetry of disc cupping equal to or greater than 0.2 with or without the following disc changes: a rim notching or thinning of the rim, disc haemorrhage or violation of the ISNT (inferior, superior, nasal, temporal) rule, seen on dilated fundoscopy using +78 D in one or both eyes; 4) characteristic glaucomatous visual field defect (such as nasal step, paracentral scotoma, temporal wedge defect, seidel scotoma, arcuate scotoma, double arcuate scotoma using automated Perimetry using Optos Automated Perimeter Model AP 200) may or may not be present. Non-glaucomatous patient was one who in each eye met the following criteria [25][26] : 1) vertical cup-disc ratio of <0.6, no disc asymmetry of ˃0.2, no rim notching or thinning of the rim, no disc haemorrhage or violation of the ISNT rule, and no disc pathology, with pink rim seen on dilated fundoscopy using +78 D; 2) true IOP of <22 mm Hg after pachymetry. Exclusion Criteria Participants were ˂30y, did not give consent to participate in the study, diagnosed with POAG before this study, with other types of glaucoma, previous ocular surgeries or anterior segment pathologies such as acute or chronic uveitis, or any corneal abnormality that would prevent reliable IOP measurement such as corneal opacity, diabetic or hypertensive or blood pressure ˃130/80 mm Hg, subjects on medications known to influence IOP.…”

Section: Introductionmentioning

confidence: 99%

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Comparing posture induced intraocular pressure variations in normal subjects and glaucoma patients

Onyekachi¹,

Arinze²,

Ogbu³

et al. 2021

Int J Ophthalmol

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AIM: To compare the posture-induced variations in intraocular pressure (IOP) between the primary open angle glaucoma (POAG) and non-glaucomatous eyes. METHODS: A case-controlled age matched study was conducted in 55 successive newly diagnosed POAG and 56 non-glaucomatous patients seen in glaucoma clinic and general outpatient eye clinic in the Alex Ekwueme University Teaching Hospital, Abakaliki. The IOPs of eligible correspondents were measured with Perkin's hand-held tonometer in the sitting, supine flat and supine with pillow positions respectively. Measurement of IOP in each position was done after 15min of assuming such posture. RESULTS: The IOP difference between the sitting and supine flat position was significantly higher in the POAG than non-glaucoma subjects (7.68±2.08 vs 4.03±0.13 mm Hg, P<0.001). The IOP difference between the sitting and supine with pillow positions was 2.61±1.49 mm Hg for POAG and 1.44±0.70 mm Hg in non-glaucoma (P<0.001), while difference between supine flat and supine with pillow positions was 5.07±2.24 mm Hg in POAG and 2.59±0.66 mm Hg in non-glaucomatous patients (P<0.001). CONCLUSION: Greater variations in posture induced IOP occurred in POAG patients than non-glaucomatous. The posture induced IOP variation is lowest in the sitting position and highest in the supine flat position. Evaluation of posture induced IOP changes may be an important tool in the management of glaucoma.

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Section: Measurement Of Iop In Various Posturessupporting

confidence: 92%

Section: Measurement Of Iop In Various Posturescontrasting

confidence: 63%

Section: Measurement Of Iop In Various Posturesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Comparing posture induced intraocular pressure variations in normal subjects and glaucoma patients

Onyekachi¹,

Arinze²,

Ogbu³

et al. 2021

Int J Ophthalmol

View full text Add to dashboard Cite

show abstract

Posture-Induced Intraocular Pressure Changes among Patients with Primary Open Angle Glaucoma in a Nigerian Tertiary Hospital

Ireka¹,

Arinze²,

Ogbu³

et al. 2022

Nigerian Journal of Clinical Practice

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Background and Aim: To determine the effect of postural changes on intraocular pressure (IOP) among newly diagnosed patients with primary open-angle glaucoma (POAG). Patients and Methods: This was a cross-sectional observational study of 55 consecutive newly diagnosed patients with POAG attending Glaucoma clinics at a Federal Teaching Hospital in Abakaliki, Ebonyi state, from July to September 2017. Patients IOPs were measured in the sitting position, supine without a pillow, and supine with pillow positions using Perkin's handheld applanation tonometer. All data were analyzed with SPSS version 20.0 Results: A total of 55 subjects were recruited comprising 30 (54.5%) males and 25 (45.5%) females, with a mean age of 50.13 ± 9.97 years and an age range of 30–79 years. The mean intraocular pressure was 27.54 ± 3.98 mmHg in the sitting position, 30.15 ± 4.41 mmHg in the supine with pillow position, and 35.22 ± 4.61 mmHg in the supine without pillow position. The mean difference of mean IOP of sitting compared to supine without the pillow was 7.68 ± 2.08 mmHg (P-value < 0.001, 95% CI: 7.12–8.24); sitting compared to supine with the pillow was 2.61 ± 1.49 mmHg (P-value < 0.001, 95% CI: 3.01–2.21), whereas supine without the pillow compared to supine with the pillow was 5.07 ± 2.24 mmHg (P-value 0.001, 95% CI: 4.47–5.68) Conclusion: IOP was lowest in the sitting position and highest in the supine without pillow position. There was a statistically significant reduction in IOP on the assumption of supine with pillow position compared to supine without pillow position. The use of thick pillows in supine positions (such as during sleep or relaxations) rather than lying supine without pillows may reduce IOP spikes in POAG patients. This may have a positive effect as regards treatment and progression of glaucoma.

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Effect of Body Positions on Intra Ocular Pressure

Cited by 2 publications

References 8 publications

Comparing posture induced intraocular pressure variations in normal subjects and glaucoma patients

Comparing posture induced intraocular pressure variations in normal subjects and glaucoma patients

Posture-Induced Intraocular Pressure Changes among Patients with Primary Open Angle Glaucoma in a Nigerian Tertiary Hospital

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