A 6 Month Study to Evaluate the Safety, Analgesic Efficacy of ACUVAIL™ (Ketorolac Tromethamine Ophthalmic Solution) 0.45%, in Post-PRK Corneal Wound Healing

A Single Center, Randomized, Contralateral, 6 Month Study to Evaluate the Safety, Analgesic Efficacy of ACUVAIL™ (Ketorolac Tromethamine Ophthalmic Solution) 0.45%, in Post-PRK Corneal Wound Healing

STUDY OBJECTIVE: To evaluate the safety and efficacy of Acuvail 0.45% administered BID for increasing corneal re-epithelialization, decreasing the time to zero pain in post-photorefractive keratectomy (PRK) surgery, and PRK enhancement assessment at 6 months post op

CLINICAL HYPOTHESES: Acuvail 0.45% administered twice daily is superior to Systane Ultra lubricant in treating post PRK pain

OVERAL STUDY DESIGN:

Structure: Single-center, randomized, open label, contralateral (one eye receives Acuvail, one eye Systane Ultra)

Treatment Group: Patients will be randomized to the eye that will receive Acuvail 0.45% Assignment: Acuvail 0.45% in one eye, Systane Ultra in contralateral eye

Duration: 6.5 months

Controls: Systane Ultra preservative-free lubricant

Dosage/Dose Regimen: Study medication will be administered to the randomized eye through post op days 1-2 BID

Visit Schedule: Screening (baseline), Day 2-30 (Surgery), post surgery Day 1 and each day through corneal re-epithelialization, post surgery months 1, 3, and 6.

Number of Patients: 10 (20 eyes)

Condition/Disease: patients undergoing bilateral PRK surgery

Study Overview

• Status: Completed
• Conditions: Must be PRK Candidate

Detailed Description

1. INTRODUCTION

   Laser Vision Correction is one of the most commonly performed elective procedures in the United States. Although the Laser in situ keratomileusis (LASIK) is the more popular vision correction procedure, a growing number of surgeons have switched to surface ablation techniques, including PRK, LASEK, and Epi-LASIK. In surface laser procedures, the epithelium (clear outer skin of the cornea) is removed, prior to laser reshaping of the cornea. This creates an epithelial defect that can take 3-6 days for the epithelium to regenerate. During this healing process, patients often report moderate to severe ocular pain.

   A variety of treatments have been utilized to reduce postoperative pain. Placement of a contact lens on the eye immediate post PRK, has been shown to reduce patient discomfort as well as topical dilute tetracaine, oral medications, and even prednisone has been recommended as treatment options for pain control. Another method that has been shown in a number of studies to assist with the reduction of post operative pain is topical non steroidal anti inflammatory drops.

   Pain management following PRK surgery has been minimized by more advanced surgical techniques, antibiotics, and pre- or post-operative use of topical NSAID solutions. We will compare the use of Acuvail 0.45% administered twice daily to Systane Ultra in treating post PRK pain.

2. STUDY OBJECTIVE

   To evaluate the safety and efficacy of Acuvail 0.45% administered BID for increasing re-epithelialization time, decreasing the time to zero pain in post-photorefractive keratectomy (PRK) surgery and assessment of PRK enhancement needs at 6 months post op.

   CLINICAL HYPOTHESES: Acuvail 0.45% administered twice daily is superior to Systane Ultra in treating post PRK pain

   Efficacy Objectives

   Primary: Time to re-epithelialization Secondary: Time to zero pain as documented in Patient Comfort Questionnaire PRK enhancement assessment at 6 month post op

   Safety Measures: Visual recovery-UCVA & BCVA IOP Biomicroscopy Adverse Events Optovue OCT-epithelial image Pachymetry Pregnancy test

3. STUDY DESIGN

This is a Phase 4, single-center, open label, randomized, contralateral (one eye receives Acuvail, one eye Systane Ultra Lubricant Eye Drops). Patients will be randomized to the eye that will receive Acuvail 0.45%. The duration of the study is estimated to be approximately 6.5 months for each study subject enrolled.

Controls: Systane Ultra preservative free tears

Dosage/Dose Regimen: Study medication will be administered twice a day to the randomized eye days 1-3 post operatively BID

Visit Schedule: Screening (baseline), Day 2-30 (Surgery), post surgery Day 1, Day 2, Day 3, and each day through corneal re-epithelialization, post surgery months 1, 3, and 6.

Number of Patients: 10- all subjects will use study medication in one eye, and Systane Ultra in the other eye

Condition/Disease: patients undergoing bilateral PRK surgery

Instructions for storage, use and administration Study medication and control medication should be stored in a secure area at room temperature and administered to patients entered in to the study in accordance to this protocol.

• Study Type: Observational
• Enrollment (Actual): 10

Contacts and Locations

Study Locations

• United States
  • Kansas
    • Overland Park, Kansas, United States, 66211
      • Durrie Vision

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 39 years (ADULT)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

• Sampling Method: Probability Sample

Study Population

Male or female patients, 18-39 yrs of age, in good general health Patient is schedule to undergo bilateral PRK surgery The difference between the two eyes ≤ 2 D Refractive error -1 to -8 diopters (spherical equivalent) at baseline

Description

Inclusion Criteria:

1. Male or female patients, 18-39 yrs of age, in good general health
2. Patient is schedule to undergo bilateral PRK surgery
3. The difference between the two eyes ≤ 2 D
4. Refractive error -1 to -8 diopters (spherical equivalent) at baseline
5. Females of childbearing potiential must have a negative pregnancy test result at baseline. A female considered to be of non-childbearing potential is she is postmenopausal (no menses for 12 consecutive months) or is without a uterus.
6. Ability to follow study instructions and likely to complete the entire course of the study
7. Written informed consent has been obtained
8. Written HIPPA authorization has been obtained

Exclusion Criteria:

1. Uncontrolled systemic disease
2. Any active ocular disease, corneal abnormalities, lid abnormalities, or any ocular pathologies
3. History of serious eye disease, trauma, or previous ocular surgery
4. History of unstable myopia
5. History of herpes keratitis
6. Known allergy or hypersensitivity to the study medication
7. Anticipated wearing of contact lenses in addition to the required bandage contact lens post-PRK. Patients who wear soft contact lenses should discontinue wearing them at least 3 days prior to baseline visit. Patients wearing RGP or hard contact lenses should discontinue wearing them at least 3 weeks prior to baseline visit.
8. Females who are pregnant, breastfeeding, or trying to conceive.
9. Keratoconus or keratoconus suspect
10. Concurrent participation in an investigational drug study or participation within 30 days prior to study start
11. Any condition or situation which, in the investigator's opinion, may put patient at significant risk or may confound the study results

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
Acuvail 0.45%; Each subject will be randomized to the eye that they will use Acuvail in for 3 days after PRK
Systane Ultra Preservative Free Tears; Each subject's contralateral eye (other eye) will use Sytane for 3 days after PRK surgery.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to re-epithelialization	Amount of days it takes for the cornea to re-epithelialize after PRK surgery, will be documented for each eye separately.	3-7 days

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Time to zero pain	Study subject will complete a questionnaire about their comfort levels at each postoperative visit, up to an including the 6 month post op exam.	3-7 days
Occurence of enhancments	Will document the number of requested/recommended enhancement procedures at the 6 month postoperativ visit.	6 months post operative

Collaborators and Investigators

• Sponsor: Durrie Vision
• Collaborators: Allergan

Study record dates

Study Major Dates

• Study Start: August 1, 2010
• Primary Completion (ACTUAL): March 1, 2011
• Study Completion (ACTUAL): April 1, 2011

Study Registration Dates

• First Submitted: August 31, 2010
• First Submitted That Met QC Criteria: August 31, 2010
• First Posted (ESTIMATE): September 1, 2010

Study Record Updates

• Last Update Posted (ESTIMATE): February 14, 2012
• Last Update Submitted That Met QC Criteria: February 13, 2012
• Last Verified: February 1, 2012

More Information

Terms related to this study

• Keywords: Myopia; PRK; Photorefractive Keratectomy; Laser Vision Correction; Nearsighted
• Other Study ID Numbers: ACVL-001