Intraocular pressure variations across different anesthetic phases in patients undergoing ophthalmic surgery at Hospital de San José, Bogotá
Ana Maria Rojas-Manjarres, Ana Maria Barreto-Niño, Adriana Restrepo-Silva, Adriana SolanoAbstract
Purpose:
To determine the variation in intraocular pressure (IOP) measured during the induction and maintenance phases of general anesthesia compared with clinic measurements in pediatric and adult patients undergoing ophthalmic or strabismus surgery at Hospital de San José, Bogotá.
Materials and Methods:
This descriptive cross-sectional study with an analytical component included pediatric and adult patients undergoing strabismus or pediatric ophthalmic surgery between March 2024 and March 2025. IOP was measured in the outpatient clinic using Goldmann tonometry and during general anesthesia with a Perkins tonometer at induction and maintenance. Sociodemographic and clinical data were collected. The Mann–Whitney test was used for age-group comparisons, and the Wilcoxon signed-rank test for paired comparisons across the three measurement phases.
Results:
A total of 151 patients (302 eyes) were included; 62.3% were younger than 18 years. The median IOP was 12 mmHg in clinic, 11 mmHg during induction, and 12 mmHg during maintenance, with statistically significant differences across phases (
Conclusions:
IOP significantly decreased during the induction and maintenance phases of anesthesia compared with clinic measurements. Although statistically significant, the mean variation of approximately 1 mmHg is unlikely to be clinically relevant. These findings suggest that IOP measurements obtained during induction or maintenance may be clinically interchangeable, while outpatient measurements remain the gold standard.