Telangiectasia, Rosacea
Conditions
Keywords
laser, lasers, KTP, semiconductor, tgs, rosacea, telangiectasia
Brief summary
The goal is to compare a novel yellow laser, based on semiconductor technology, with traditional green laser, in the treatment of cheek telangiectasias. The trial design is randomized split-face double-blinded study with 20-30 volunteers. The improvement will be assessed using a 7-point Telangiectasia Grading Scale.
Detailed description
Trial design: The study is a comparative randomized split-face double-blinded study without a control group. It enables a comparison between two lasers; namely the KTP laser and the investigational PHOTOLASE laser. The split-face design eliminates the individual biases and the randomization eliminates the possible small variations in the symmetry of the telangiectasias on the face. The double-blinded assessment eliminates the physicians' and the subjects' subjective and objective bias. Methods: The subjects will be treated with a 532-nm green KTP laser and a 585-nm yellow PHOTOLASE laser; different laser on each side of a face. A total of one or two treatments will be given based on the response of the first treatment. The improvement of subjects' telangiectasia will be graded after the final treatment according to a 7-point Telangiectasia Grading Scale (TGS) by a blinded physician using images taken with Visia imaging system. The usability, reliability and treatment characteristics of PHOTOLASE laser will be qualitatively assessed by the treating physicians (not blinded). Objectives: The primary objective is to assess how the PHOTOLASE laser compares to the KTP laser in the treatment of facial telangiectasia in terms of the treatment outcomes. The secondary objective is to assess the usability, reliability and treatment characteristics of the PHOTOLASE laser from the perspective of the user.
Interventions
DEVICEPHOTOLASE
This is the investigational yellow laser (PHOTOLASE)
DEVICEKTP
This is the traditional green laser (KTP)
Sponsors
Tampere University of Technology
Tampere University Hospital
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
* The subjects are required to be Finnish speaking adults with symmetrical facial telangiectasia, volunteering to participate in the clinical trial. * The subjects have to have a Fitzpatrick skin phototype I-IV.
Exclusion criteria
* pregnancy * lactation * hemophilic condition * Fitzpatrick skin phototype V-VI * drug or alcohol abuse * subjects who are under guardianship * subjects with significant tanning less than 6 weeks prior to the treatment day. * unbalanced basic diseases, such as diabetes, heart disease, cancer etc.
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| TGS change | Before treatment and 1-2 months after the intervention. | Telangiectasia grading scale will be used to assess improvement of telangiectasia and erythema. The range of TGS is -1 to 5, where -1 means worsening of the condition, 0 means no change, 1 means 0-25% improvement, 2 means 25-50% improvement, 3 means 50-75% improvement, 4 means 75-100% improvement and 5 means total clearance. |
Secondary
| Measure | Time frame | Description |
|---|---|---|
| VAS pain measurement | Immediately after intervention. | Visual Analogue Scale will be used to measure the amount of pain after the intervention. The range is 0.0 - 10.0, where 0 means no pain and 10 means worst imaginable pain. The results will be reported as a mean value and range for yellow laser and green laser separately. |
| Amount of treatment-related adverse effects using a 4-point scale. | Immediately after treatment and 2-3 days after treatment. | The amount of erythema, crusting, edema, purpura and blisters will be assessed separately on both sides of the face. The measurement range is 0-3, where 0 means no symptoms, 1 means mild symptoms, 2 means moderate symptoms and 3 means severe symptoms. The results will be reported as a mean value for yellow laser and green laser separately. |
Countries
Finland
Outcome results
None listed