Intraocular Pressure Measurements in Standing, Sitting, and Supine Position: Comparison between Tono-Pen Avia and Icare Pro Tonometers

Bernardo, Maddalena De; Abbinante, Giulia; Borrelli, Maria; Stasi, Margherita Di Di; Cione, Ferdinando; Rosa, Nicola

doi:10.3390/jcm11216234

Cited by 10 publications

(8 citation statements)

References 38 publications

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“…In addition, taking into account the changes in the body position of the patients during the present study, GAT was unable to be properly managed. Furthermore, TPA has been used in similar studies where a handheld tonometer was required [ 27 ], showing comparable results.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Esophagogastroduodenoscopy on Intraocular Pressure

De Bernardo,

Santonicola,

Gioia

et al. 2024

JCM

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Background: Esophagogastroduodenoscopy (EGD) is an endoscopic examination of the upper gastrointestinal tract that requires insufflation with gas, leading to intra-abdominal hypertension (IAH). There is evidence suggesting that IAH positively correlates with intracranial pressure (ICP) and possibly with intraocular pressure (IOP). The aim of this study was to examine the effect of a routine screening EGD on the IOP. Methods: In this observational study, 25 patients were recruited; 15 males with a mean age of 50 ± 18 years and 10 females with a mean age of 45 ± 14 years. EGD was conducted under sedation in 21 subjects. Both eyes’ IOP measurements were performed using Tonopen Avia in the sitting and left lateral decubitus positions before sedation and the start of EGD, and subsequently in the left lateral decubitus position when the endoscope reached the duodenum (D2) and at the end of the procedure. The final measurement was performed in the sitting position 10 min after the end of the procedure. Results: The mean IOP in the sitting position was 15.16 ± 2.27 mmHg, and in the left lateral decubitus position, 15.68 ± 2.82 mmHg. When the gastroscope entered the D2, it was 21.84 ± 6.55 mmHg, at the end of the procedure, 15.80 ± 3.25 mmHg, and 10 min later, 13.12 ± 3.63 mmHg. There was a statistically significant IOP increase when the gastroscope entered the duodenum (p < 0.01). At the end of the gastroscopy, the IOP significantly decreased compared to the one registered when the gastroscope entered the D2 (p < 0.001) and it became similar to the values measured before the EGD, in the same left lateral decubitus position (p > 0.05). Conclusion: Significant changes in IOP were observed during the EGD. IOP fluctuations during EGD should be taken into account, especially in patients that need repeated EGDs during their life or in patients with glaucoma. Further studies are needed to better understand the short-effect and long-effect influence of an IOP increase in these patients.

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Section: Discussionmentioning

confidence: 99%

The Effect of Esophagogastroduodenoscopy on Intraocular Pressure

De Bernardo,

Santonicola,

Gioia

et al. 2024

JCM

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“…Moreover, obese subjects have extreme difficulty in resting their chin and forehead on the chin guard of the slit lamp to be examined. This is the reason why the study was conducted with the TPA, which uses the same physical principle as GAT to measure IOP and whose reliability is guaranteed by the numerous previous studies that have shown reliable measurements when compared to the GAT in a sitting position [ 42 , 44 ]. It should be taken in account that other external factors could cause IOP variations: for example, emotional changes could play a role, especially in subjects that are undergoing a surgical procedure.…”

Section: Discussionmentioning

confidence: 99%

Intraocular Pressure Variations in Postural Changes: Comparison between Obese and Non-Obese Controls

De Bernardo,

Pilone,

Di Paola

et al. 2023

JCM

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Background: Comparing intraocular pressure (IOP) changes (ΔIOP) between obese subjects and non-obese controls in relation to different positions: standing, sitting, supine. Methods: the IOP was measured in both obese patients and non-obese controls groups with Tono-Pen AVIA in different positions following this sequence: after 5 min (5′) in the standing position, sitting, supine, supine after 5 min (supine 5′) and immediately after standing. ΔIOP values obtained comparing all positions were, therefore, evaluated. Results: 92 eyes of 46 obese subjects aged between 18 and 59 years (mean 38.07 ± 11.51 years) and of a Body Mass Index (BMI) between 31.84 and 60.65 (mean 41.84 ± 7.05) were evaluated. A total of 48 eyes of 24 non-obese controls aged between 23 and 55 (mean 35.21 ± 11.96 years) and of a BMI between 18.20 and 26.79 (mean 21.04 ± 2.36) were also recruited. In obese subjects, there were statistically significant differences between the IOP in the supine position and the supine positions 5′ with all other IOP measurements (p < 0.05). There were statistically significant differences between ΔIOP in both supine positions and prolonged standing positions obtained by obese subjects and non-obese controls (p < 0.05). Conclusions: In obese subjects, there is a statistically significant increase in IOP in the supine positions that is significantly greater than the non-obese population. BMI is weakly correlated with IOP and ΔIOP in postural changes.

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“…Sixty Chinese myopic children (Han nationality) who visited the First Affiliated Hospital of Zhengzhou University between June 2020 and September 2020 were recruited for this trial. In brief, aged 8-12 years, spherical equivalent refraction (SER) from −1.00D to −4.00D in both eyes, astigmatism no more than 1.50D, anisometropia of ≤1.00D, monocular best corrected visual acuity of ≥20/20 (Snellen chart), and intraocular pressures (IOPs) < 21 mmHg (17)(18)(19)(20)(21)(22)(23)(24)(25)(26)(27). In addition, there were no other eye diseases or surgery, and no eye or systemic organic changes affecting vision acuity were enrolled.…”

Section: Methodsmentioning

confidence: 99%

Effect of 0.01% atropine combined with orthokeratology lens on axial elongation: a 2-year randomized, double-masked, placebo-controlled, cross-over trial

Li,

Yu,

Gao

et al. 2024

Front. Med.

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PurposeTo evaluate the effect of 0.01% atropine combined with orthokeratology (OK) lens on axial elongation in schoolchildren with myopia.MethodsSixty children aged 8–12 years with spherical equivalent refraction (SER) from -1.00D to -4.00D in both eyes were enrolled in this randomized, double-masked, placebo-controlled, cross-over trial. Children who had been wearing OK lenses for 2 months were randomly assigned into combination group (combination of OK lens and 0.01% atropine) for 1 year followed by control group (combination of OK lens and placebo) for another 1 year or vice versa. This trial was registered in the Chinese Clinical Trial Registry (Number: ChiCTR2000033904, 16/06/2020). The primary outcome was changes in axial length (AL). Data of right eyes were analyzed.ResultsThere were statistically significant differences in the changes in AL between combination and control groups after generalized estimating equation model adjusting for age and baseline SER (p = 0.001). The mean axial elongation difference between combination and control groups was 0.10 mm in the first year (0.10 ± 0.13 mm vs. 0.20 ±0.15 mm; p = 0.01), and 0.09 mm in the second year (0.22 ± 0.10 mm vs. 0.13 ± 0.14 mm; p = 0.01), respectively. The mean axial elongation difference of two groups in the first year was similar to that in the second year during the cross-over treatment.ConclusionIn central Mainland China in myopic children, the treatment of combination therapy is more effective than single OK lens in controlling axial elongation.

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Intraocular Pressure Measurements in Standing, Sitting, and Supine Position: Comparison between Tono-Pen Avia and Icare Pro Tonometers

Cited by 10 publications

References 38 publications

The Effect of Esophagogastroduodenoscopy on Intraocular Pressure

The Effect of Esophagogastroduodenoscopy on Intraocular Pressure

Intraocular Pressure Variations in Postural Changes: Comparison between Obese and Non-Obese Controls

Effect of 0.01% atropine combined with orthokeratology lens on axial elongation: a 2-year randomized, double-masked, placebo-controlled, cross-over trial

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