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Published on: June 20, 2015
Clinical findings before the onset of myopia in youth: 5. Intraocular pressure
1School of Optometry, Indiana University, Bloomington 47405, USA.
Insights
Intraocular pressure (IOP) was studied in children who developed myopia versus those who remained emmetropic. No significant difference in IOP was found between the groups, suggesting IOP is not a predictor of myopia onset in children.
Area of Science:
- Ophthalmology
- Pediatric Ophthalmology
- Myopia Research
Background:
- Myopia development theories suggest elevated intraocular pressure (IOP) may contribute to axial eye elongation.
- Previous studies have reported higher IOPs in myopic individuals compared to emmetropes.
- This study investigates IOP differences in children who transition from emmetropia to myopia versus those who remain emmetropic.
Purpose of the Study:
- To compare intraocular pressure (IOP) between children who develop myopia and those who remain emmetropic.
- To determine if elevated IOP is a risk factor for myopia onset in children.
- To investigate the relationship between IOP and axial elongation in pediatric myopia.
Main Methods:
- A longitudinal cohort study design was employed over a 3-year period.
- Initially emmetropic children underwent eye examinations at 6-month intervals.
- Intraocular pressure (IOP) was measured using Goldmann tonometry.
Main Results:
- The mean IOP for children who became myopic was 13.9 mm Hg (N=24).
- The mean IOP for children who remained emmetropic was 14.7 mm Hg (N=53).
- The difference in mean IOP between the two groups was not statistically significant.
Conclusions:
- Children who subsequently developed myopia did not exhibit higher IOP compared to children who remained emmetropic.
- The findings do not support the hypothesis that elevated IOP is a significant predictor of myopia onset in this cohort.
- Further research may be needed to explore other factors influencing pediatric myopia development.
Background:
We conducted a study to compare variables in children who were initially emmetropic and subsequently became myopic to those in children who remained emmetropic. This paper investigates intraocular pressure (IOP) in the two groups. Some theories of myopia development suggest a role for elevated IOP in axial elongation of the eye, and some studies have found higher IOPs in myopes than in nonmyopes.
Methods:
A cohort of initially emmetropic children were given eye and vision examinations at 6-month intervals over a 3-year period. IOPs were obtained by Goldmann tonometry.
Results:
The mean IOP for the became-myopic group was 13.9 mm Hg (N = 24; SD = 2.5). The mean IOP for the remained-emmetropic group was 14.7 mm Hg (N = 53; SD = 3.1). The difference was not statistically significant.
Conclusion:
Children who became myopic did not show a greater IOP at an examination 6 months or less before the onset of myopia than children who remained emmetropic.
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