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[Intraocular pressure during hemodialysis].
1Department of Ophthalmology, School of Medicine, University of Occupational and Environmental Health, Kitakyushu, Japan.
Journal of UOEH
|March 29, 2000
Summary
Hemodialysis can increase intraocular pressure (IOP) in patients with poor aqueous outflow. This occurs due to decreased serum osmolality during dialysis, causing fluid shifts into the eye.
Area of Science:
- Ophthalmology
- Nephrology
- Physiology
Context:
- Hemodialysis is a vital treatment for renal failure but can cause ocular side effects like increased intraocular pressure (IOP) and pain.
- Previous reports suggest a link between hemodialysis and elevated IOP, necessitating further investigation into the underlying mechanisms.
Purpose:
- To investigate the effect of hemodialysis on intraocular pressure (IOP) in patients with normal versus compromised aqueous humor outflow.
- To explore the relationship between changes in serum osmolality, plasma CO2 pressure, and IOP during hemodialysis.
Summary:
- In patients with normal aqueous outflow, hemodialysis did not significantly alter IOP despite decreased serum osmolality.
- Patients with poor aqueous outflow experienced a significant IOP increase during hemodialysis, correlated with decreased serum osmolality.
- Intravenous hyperosmotic agents mitigated changes in both serum osmolality and IOP, supporting the role of osmotic gradients.
Impact:
- Findings suggest that impaired aqueous humor drainage exacerbates IOP elevation during hemodialysis due to osmotic shifts.
- Understanding this mechanism can inform strategies to prevent ocular complications in hemodialysis patients.
- Highlights the importance of considering ocular hemodynamics in patients undergoing renal replacement therapy.