Comparison of Reduced Fluence Versus Standard Photodynamic Therapy (in Combination With Intravitreal Triamcinolone Acetate)

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT00523406
Recruitment Status : Completed
First Posted : August 31, 2007
Last Update Posted : May 3, 2013
Information provided by (Responsible Party):
Stefan Sacu, Medical University of Vienna

Brief Summary:
To assess the CNV treatment effect of PDT with verteporfin in combination with IVTA using reduced fluence compared to the standard fluence.

Condition or disease Intervention/treatment Phase
Macular Degeneration Procedure: Photodynamic therapy and intravitreal triamcinolone Phase 3

Detailed Description:
Age-related macular degeneration (AMD) is by far the most common disorder in the group of irreversible causes of visual disability. AMD leads to dysfunction and loss of photoreceptors in the central retina. Neovascular AMD affects visual function early in the disease process and severely compromises the highly developed functions of the macula, such as perception of details, central fixation, color vision, and reading ability. AMD-related visual impairment is associated with a loss of autonomy and quality of life. Currently, laser photocoagulation, photodynamic therapy (PDT) with verteporfin usually combined with intravitreal triamcinolone acetonide (IVTA) are the only proved treatments for subfoveal choroidal neovascularisation (CNV). Laser photocoagulation is limited to selected cases. Photodynamic therapy using verteporfin provides very promising data regarding improvement of visual acuity and absence of fluorescein leakage. PDT was recently successfully combined with an intravitreal injection of the corticosteroid triamcinolone acetonide. Yet, PDT also leads to damage to surrounding normal choroidal vessels. A pilot trial comparing low fluence (300 mW/cm²) with standard fluence (600 mW/cm²) demonstrated a trend for improved outcomes using the low fluence regimen (VIM study). However, vascular mechanisms and choroidal damage were not examined, and the study group was too small to evaluate vision outcome parameters. Combined with the IVTA, the low fluence effects of PDT may be sufficient for CNV occlusion and the physiological choroids should be spared from any collateral damage. The aim of this study was to compare reduced fluence with standard fluence PDT using verteporfin and IVTA for CNV secondary to AMD.

Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 40 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double (Participant, Investigator)
Primary Purpose: Treatment
Study Start Date : August 2005
Actual Primary Completion Date : January 2008
Actual Study Completion Date : January 2008

Arm Intervention/treatment
Active Comparator: A
standard fluence photodynamic therapy and intravitreal triamcinolone combination
Procedure: Photodynamic therapy and intravitreal triamcinolone
combination of photodynamic therapy and intravitreal triamcinolone combination to treat neovascular AMD
Active Comparator: B
reduced fluence photodynamic therapy and intravitreal triamcinolone combination
Procedure: Photodynamic therapy and intravitreal triamcinolone
combination of photodynamic therapy and intravitreal triamcinolone combination to treat neovascular AMD

Primary Outcome Measures :
  1. • Chorioretinal perfusion. • Perfusion of the neovascular net (CNV). • Changes of intraretinal morphologies. • Central visual function. [ Time Frame: one year ]

Secondary Outcome Measures :
  1. macular sensitivity, three dimensional optical coherence tomography [ Time Frame: one year ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

Ages Eligible for Study:   50 Years to 90 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

  • Patients 50 years of age or greater.
  • Patients with subfoveal choroidal neovascularization lesions secondary to AMD.
  • CNV lesion in the study eye is ≤ 4 disc areas in greatest linear dimension.
  • Patients who have a BCVA score better than 20/400 in the study eye using ETDRS.
  • Only one eye will be assessed in the study. If both eyes are eligible, the one with the worse visual acuity will be selected for treatment and study unless, based on medical reasons, the investigator deems the other eye the more appropriate candidate for treatment and study.

Exclusion Criteria:

  • Prior treatment in the study eye with verteporfin, external-beam radiation therapy, subfoveal focal laser photocoagulation, vitrectomy, submacular surgery, or transpupillary thermotherapy.
  • Previous or current intravitreal drug delivery (e.g., intravitreal corticosteroid injection or device implantation) in the study eye.
  • Laser photocoagulation (juxtafoveal or extrafoveal) in the study eye within one month preceding Visit 1.
  • History of glaucoma filtration surgery, corneal transplant surgery or extracapsular extraction of cataract with phacoemulsification within six months preceding Visit 1, or a history of post-operative complications within the last 12 months preceding Visit 1 in the study eye (uveitis, cyclitis etc.).
  • History of uncontrolled glaucoma in the study eye (defined as intraocular pressure ≥ 25 mmHg despite treatment with anti-glaucoma mediation).
  • Aphakia or absence of the posterior capsule in the study eye.
  • Presence of a retinal pigment epithelial tear involving the macula in the study eye.
  • Any concurrent intraocular condition in the study eye (e.g., cataract or diabetic retinopathy) that, in the opinion of the investigator, could either require medical or surgical intervention during the three-month study period to prevent or treat visual loss that might result from that condition.
  • Active intraocular inflammation (grade trace or above) in the study eye.
  • Any active infection involving eyeball adnexa.
  • Vitreous hemorrhage or history of rhegmatogenous retinal detachment or macular hole (Stage 3 or 4) in the study eye.
  • Ocular conditions that require chronic concomitant therapy with systemic or topical ocular corticosteroids. Chronic concomitant therapy is defined as multiple doses taken daily for three or more consecutive days at any time within six months prior to screening or during the course of the study.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT00523406

Medical University of Vienna, Department of Ophthalmology
Vienna, Austria, 1090
Sponsors and Collaborators
Medical University of Vienna
Principal Investigator: Ursula Schmidt-Erfurth, MD, Prof. Department of Ophthalmology, MUVienna

Responsible Party: Stefan Sacu, Assoc. Prof. PD Dr., Medical University of Vienna Identifier: NCT00523406     History of Changes
Other Study ID Numbers: EK049/2005
First Posted: August 31, 2007    Key Record Dates
Last Update Posted: May 3, 2013
Last Verified: May 2013

Keywords provided by Stefan Sacu, Medical University of Vienna:
choroidal neovascularisation,
macular degeneration
optical coherence tomography
neovascular age related macular degeneration

Additional relevant MeSH terms:
Macular Degeneration
Retinal Degeneration
Retinal Diseases
Eye Diseases
Triamcinolone hexacetonide
Triamcinolone Acetonide
Triamcinolone diacetate
Anti-Inflammatory Agents
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Immunosuppressive Agents
Immunologic Factors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action