Effect Of Different Body And Head Positions On Intraocular Pressure Measurements

Published 2024 - 42nd Congress of the ESCRS

Reference: PO562 | Type: Free paper | DOI: 10.82333/cc78-7692

Authors: Yong Wang* ¹

¹Aier eye Hospital of Wuhan University (Wuhan Aier Eye Hospital),Wuhan,China

Purpose

To evaluate the consistency of measurement of intraocular pressure (IOP) in normal subjects with different body positions and head positions.

Setting

A single-arm prospective study

Methods

Using random sampling method, 100 patients (200 eyes) at our hospital from August to December 2023 were selected for a single arm prospective experiment. Measure intraocular pressure using a handheld tonometer (iCare ic200 rebound tonometer) in four positions of the patient: supine, semi supine, seated, and prone, with the head facing forward, head facing left, and head facing right.

Results

In the supine position, the IOPs with head position forward, right, and left were (13.80±3.62) mmHg, (14.25±3.66) mmHg, and (13.78±3.40) mmHg. In the semi-reclining position, the IOPs with head position forward, right, and left were (12.08±3.34) mmHg, (12.12±3.22) mmHg, and (12.04±3.38) mmHg. In the sitting position, the IOPs with head position forward, right, and left were (11.73±3.29) mmHg, (11.73±3.22) mmHg, and (11.59±3.17) mmHg. In the prone position, the IOPs with head position forward, right, and left were (14.19±3.73) mmHg, (14.42±3.93) mmHg, and (14.74±3.81) mmHg, respectively, there is no statistical difference among the three groups of different head positions under the same head position..

Conclusions

The intraocular pressure value is related to the position, and as the inclination of the position increases from an upright position to a horizontal position, the intraocular pressure value increases. The lowest intraocular pressure is observed in the seated position, while the highest is observed in the prone position. The intraocular pressure value is independent of head position.