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Intraocular Pressure Changes during Accommodation in Progressing Myopes, Stable Myopes and Emmetropes
Yan Liu1, Huibin Lv1, Xiaodan Jiang1
1Department of Ophthalmology, Peking University Third Hospital, Beijing, China.
Plos One
|October 31, 2015
Summary
Accommodation did not significantly alter intraocular pressure (IOP) in most myopes and emmetropes. However, adult progressing myopes experienced a transient IOP increase with accommodation.
Area of Science:
- Ophthalmology
- Optometry
- Vision Science
Background:
- Intraocular pressure (IOP) is a critical factor in eye health.
- Accommodation, the eye's ability to focus on near objects, may influence IOP.
- Understanding these effects is crucial for managing myopia progression and related conditions.
Purpose of the Study:
- To investigate the impact of 3-diopter (3 D) accommodation on intraocular pressure (IOP).
- To compare IOP changes induced by accommodation in progressing myopes, stable myopes, and emmetropes.
Main Methods:
- A cross-sectional study involving 318 participants (270 myopes, 48 emmetropes).
- Intraocular pressure (IOP) was measured using an iCare rebound tonometer.
- IOP was recorded at 0 D and 3 D of accommodation for all subjects.
Main Results:
- No significant baseline IOP differences were observed between the groups.
- Accommodation induced a slight, non-significant decrease in IOP across all groups.
- Adult progressing myopes showed a statistically significant IOP increase with accommodation (p = 0.008), unlike children.
Conclusions:
- While overall IOP changes with accommodation were not significant between groups, a notable finding emerged.
- Adult progressing myopes demonstrated a transient elevation in intraocular pressure (IOP) upon accommodation.
- This suggests a potential age-related difference in IOP response to accommodation among myopes.
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