Observational studyBMC anesthesiology2025
The effects of prone position on optic nerve sheath diameter and intraocular pressure in elective lumbar disc surgery.
Observational study in BMC anesthesiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
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Who cites it
1 citing paper in PubMed.
- Effect of Tonsillar Retractor on Intracranial and Intraocular Pressure in Children Undergoing Adenotonsillectomy Surgeries.Laryngoscope investigative otolaryngology · 2026Article
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Authors and funding
3 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundThe objective of this study was to determine the efficacy of intraocular pressure (IOP) measurements in diagnosing elevated increased intracranial pressure (ICP) by examining the correlation between optic nerve sheath diameter (ONSD) and IOP in the prone position.
methodsThis prospective observational study included patients in the American Society of Anesthesiologists (ASA) 1–2 risk group, aged 18–65 years, who were scheduled for elective surgery. ONSD and IOP measurements were performed with ultrasound and Tonopen XL.
resultsData from 59 patients were analysed. Spearman’s correlation analysis was used to determine the relationship between quantitative data. Significance was considered at p < 0.05. ONSD and IOP measurements were significantly higher in the prone position (p = 0.001). However, no correlation was found between ONSD and IOP measurements.
conclusionWe found that ONSD and IOP measurements increased in the prone position, but these two measurements were not correlated. ONSD can be used in the diagnosis and follow-up of elevated ICP. Since there are many factors affecting IOP values, we concluded that IOP would not be effective in the diagnosis and follow-up of ICP.
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