Keratitis Clinical Trial
Official title:
Effectiveness of Corneal Accelerated Crosslinking Versus Conventional Treatment for Infectious Keratitis
The objective of this study is to evaluate the efficacy and safety of accelerated cross-linking (Avedro Inc., Waltham, USA) in the management of microbial keratitis as adjunctive therapy.
Investigators perform a comprehensive ophthalmological examination, including evaluation of
risk factors (immunosuppressive status, ocular trauma, previous ocular surgery, contact lens
wear, topical corticosteroids use), best-corrected visual acuity (Snellen chart), slit-lamp
biomicroscopy, tonometry and fundoscopy. In addition, anterior segment optical coherence
tomography imaging (Visante, Carl Zeiss Meditec, Dublin, California, USA), corneal scrapes,
culture and clinical photographs at day 1, day 7, month 1 and 3 will be analyzed.
Each participant will be assigned to one of four groups after randomization. Group 1:
Initial ulcer on treatment with antibiotic plus sham (n = 66), these partcipants will
receive only topical moxifloxacin 0,5% (Vigamoxi, Alcon, Texas, USA) and sham CXL; Group 2:
Initial ulcer on treatment with antibiotic plus cross-linking (CXL) (n = 66) receive
moxifloxacin plus CXL (riboflavin 0.1% during 10 minutes and irradiation 30 mW/cm2 during 3
minutes using accelerated CXL); Group 3: Refractory corneal ulcer on treatment with
antibiotic plus sham (n=66), receive only topical antibiotic plus sham CXL; Group 4:
Refractory corneal ulcer on treatment with antibiotic plus CXL will receive their standard
medications plus CXL.
Statistical analysis will be divided into four phases: 1) Analysis of compliance, 2)
Intention to treat, 3) Losses to follow-up and 4) Variable-response (healing) using Stata/MP
12.0 (Stata Corp., College Station, TX).
;
Allocation: Randomized, Endpoint Classification: Safety/Efficacy Study, Intervention Model: Parallel Assignment, Masking: Double Blind (Subject, Caregiver), Primary Purpose: Treatment
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