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Evaluation of the iridocorneal angle with accommodation using optical coherence tomography
Daniel Monsálvez-Romín1, Antonio Del Águila-Carrasco1, Teresa Ferrer-Blasco1
1Optics and Optometry and Vision Sciences Department, University of Valencia, Burjassot 46100, Spain.
International Journal of Ophthalmology
|October 25, 2017
Summary
Accommodation does not significantly alter iridocorneal angle structures. This study used anterior segment optical coherence tomography to assess angle parameters during different accommodative states, finding no significant changes.
Area of Science:
- Ophthalmology
- Anatomy
- Biomedical Engineering
Background:
- Accommodation is the eye's ability to change focus.
- The iridocorneal angle's role in aqueous humor outflow is crucial for intraocular pressure regulation.
- Understanding structural changes during accommodation is important for glaucoma research.
Purpose of the Study:
- To investigate the structural changes in the iridocorneal angle during accommodation.
- To assess the impact of varying accommodative states on key angle parameters.
Main Methods:
- Anterior segment optical coherence tomography (AS-OCT) was employed.
- Thirteen right eyes were measured using the Visante® omni system.
- Iridocorneal angle parameters were assessed at three accommodative states (0.0 D, -1.5 D, -3.0 D) in nasal and temporal regions.
Main Results:
- Key parameters including angle opening distance (AOD) and trabecular iris space area (TISA) were measured.
- Scleral spur angle was also assessed.
- No statistically significant differences were observed in the iridocorneal angle structures across the tested accommodative states.
Conclusions:
- Accommodation does not induce significant structural changes in the iridocorneal angle.
- These findings suggest that the iridocorneal angle's morphology remains stable during normal accommodative function.
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