iCare® Home vs Goldmann Applanation Tonometry
Study Details
Study Description
Brief Summary
Self-tonometry with iCare Home is regularly performed at Sankt Erik's Eye Hospital since a few years back. The purpose of this study was to show that the eye pressure measurements made with iCare® Home by patients / relatives do not vary more than those made with the standard method, Goldman applanation tonometry (GAT), by different healthcare professionals. This will hopefully confirm the usefulness of self-tonometry.
Condition or Disease | Intervention/Treatment | Phase |
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Detailed Description
Since a few years back, self-tonometry with iCare® Home has been available in glaucoma care. Sankt Erik's Eye Hospital was first in Sweden to use the new technology. Several studies have shown good agreement between measurements made by patients or healthcare professionals with iCare® Home and Goldman applanation tonometry (GAT). However, some researchers raise critical voices about the reliability of iCare® Home measurements because they can differ from GAT. GAT is considered the gold standard method of tonometry to which all other instruments are compared. But like all other methods, GAT has some limitations.
At the clinic, the eye pressure is usually measured with GAT by different staff (ophthalmological nurses, opticians or doctors) from visit to visit. This can sometimes lead to pressure variations that may affect the follow-up of glaucoma patients. This raises the question of whether the difference between GAT and iCare® Home is statistically and clinically significant.
The purpose of this study was to show that the eye pressure measurements made with iCare® Home by patients / relatives do not vary more than those made with the standard method GAT by different healthcare professionals. This will hopefully confirm the usefulness of self-tonometry.
Study Design
Outcome Measures
Primary Outcome Measures
- Correlation between iCare® Home inter-user measurements [12 months]
iCare® Home measurements made by participants (patients and volunteers) will be compared to iCare® Home measurements made by trainers' using the same device on the same occasion
- Correlation between GAT measurements made by different healthcare personnel [12 months]
GAT measurements made by iCare® Home trainers will be compared to GAT measurements made by other available healthcare personnel using a different device on the same occasion
Secondary Outcome Measures
- Agreement between iCare® Home tonometry and GAT [12 months]
Agreement, repeatability and reliability of measurements made with iCare® Home tonometry and GAT will be assessed using Bland Altman analysis, ANOVA and interclass correlation coefficient (ICC).
Eligibility Criteria
Criteria
Inclusion Criteria:
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primary open angle glaucoma (POAG)
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pseudo-exfoliation glaucoma (PEX)
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ocular hypertension (OHT)
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no eye disease,
Exclusion Criteria:
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inability to perform measurements due to limited hand or arm mobility (eg rheumatism, tremor)
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measurements outside the iCare® Home manufacturer's recommendations.
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | St Erik Eye Hospital | Stockholm | Sweden | 11282 |
Sponsors and Collaborators
- St. Erik Eye Hospital
Investigators
- Principal Investigator: Enping Chen, MD Ph D, St. Erik Eye Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
None provided.- iCare Home vs GAT