Impact of Self-tonometry on Glaucoma Treatment Decision.

Study Overview
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Brief Summary
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Self-tonometry with iCare Home is performed by one hundred patients annually at Sankt Erik's Eye Hospital. The investigators want to evaluate the impact that self-tonometry results have on the clinician's choice of glaucoma treatment. The investigators also want to evaluate how often pressure peaks occur outside the clinic's opening hours.

Detailed Description
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Since a few years back, self-tonometry has been available in glaucoma care. Self-tonometry allows patients to measure their eye pressure themselves using a portable tonometer. Sankt Erik's Eye Hospital was the first healthcare provider in Sweden to use this new technology. The investigators have previously conducted studies that have shown good agreement between the measurements made by patients and the gold standard method, e.g. Goldman applanation tonometry (GAT) (Chen, Querat et al. 2016, Querat and Chen 2017). About one hundred patients perform pressure curves with self-tonometry annually. As the method is used regularly, the investigators want to evaluate the impact of self-tonometry results on the clinician's choice of glaucoma treatment. The investigators also want to evaluate how often pressure peaks occur outside the clinic's opening hours and how much they differ from GAT.

Official Title
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Impact of Self-tonometry With iCare Home ® on Glaucoma Treatment Decision.

Conditions
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Glaucoma, Glaucoma, Open-Angle, OHT - Ocular Hypertension, Glaucoma Capsulare

Intervention / Treatment
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* Other: Unchanged treatment
* Other: Changed treatment


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Age ≥ 18 years Diagnosed with POAG (primary open-angle glaucoma), PEX (pseudo-exfoliation glaucoma) or OHT (ocular hypertension) Difference between patients' and staff's iCare Home® measurements less than 5 mmHg at Baseline Difference between Goldman Applanation tonometry (GAT) and patient's highest iCare Home® measurements less than 7 mmHg at baseline Monitoring over at least two days Exclusion Criteria: More than one measurement with iCare Home® tonometer below 5 mmHg Missing more than one daily measurement with iCare Home® tonometer

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| GAT IOP below 15 mmHg<br>Glaucoma patients with an IOP measured with GAT below 15 mmHg prior performance of self-tonometry with iCare Home | Other: Unchanged treatment<br>* Treatment is the same pre- and post self-tonometry<br>Other: Changed treatment<br>* Treatment is changed post self-tonometry<br>|
| GAT IOP equal or above 15 mmHg<br>Glaucoma patients with an IOP measured with GAT equal or above 15 mmHg prior performance of self-tonometry with iCare Home | Other: Unchanged treatment<br>* Treatment is the same pre- and post self-tonometry<br>Other: Changed treatment<br>* Treatment is changed post self-tonometry<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Clinician's choice of glaucoma treatment | Type of treatment received by patient after performance of self-tonometry with iCare Home | One month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Occurence of IOP peaks | Occurence of IOP peaks measured by self-tonometry | Three days of self-tonometry | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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glaucoma, self-tonometry, treatment, IOP peaks