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Investigated the effects of high-frequency multi-band harmonic electromagnetic stimulation on ophthalmic and central retinal artery circulation.
This study investigated the effects of prolonged smartphone usage for over 90 minutes on ophthalmic and central retinal artery circulation before and after smartphone use and compared the effects with versus without intervention by high-frequency multi-band harmonic electromagnetic stimulation.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| experimental group | Experimental | high-frequency multi-band harmonic electromagnetic stimulation device group |
|
| control group | Placebo Comparator | placebo device group |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| BOBY | Device | high-frequency multi-band harmonic electromagnetic stimulation device |
| |
| Measure | Description | Time Frame |
|---|---|---|
| Peak Systolic Velocity (PSV) | peak systolic velocity (PSV) of the ophthalmic artery (OA) were measured using color Doppler ultrasound of the eye arterial blood flow (EPIQ Elite ultrasound system, PHILIPS). | At the first visit and after 90 minutes usage of device. |
| End Diastolic Velocity (EDV) | end diastolic velocity (EDV) of the ophthalmic artery (OA) were measured using color Doppler ultrasound of the eye arterial blood flow (EPIQ Elite ultrasound system, PHILIPS). | At the first visit and after 90 minutes usage of device. |
| Central Retinal Artery (CRA) | Central Retinal Artery (CRA) were measured using color Doppler ultrasound of the eye arterial blood flow (EPIQ Elite ultrasound system, PHILIPS). | At the first visit and after 90 minutes usage of device. |
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Inclusion Criteria:
Exclusion Criteria:
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| National Central University | Hsinchu | Taiwan | 30013 | Taiwan |
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| ID | Term |
|---|---|
| D015356 | Retinal Artery Occlusion |
| ID | Term |
|---|---|
| D012164 | Retinal Diseases |
| D005128 | Eye Diseases |
| D001157 | Arterial Occlusive Diseases |
| D014652 | Vascular Diseases |
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This study is a randomized double-blind controlled trial. All participants who meet the inclusion criteria are randomly assigned to either the "high-frequency multi-band harmonic electromagnetic stimulation device group" as the experimental group or the "placebo device group" as the control group.
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| Control |
| Other |
placebo group |
|
| D002318 |
| Cardiovascular Diseases |