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Evaluation of the Efficacy of Topical Ophthalmic Steroids in a Modified Conjunctival Allergen Challenge (CAC) Model

This study has been completed.
Information provided by (Responsible Party):
ORA, Inc. Identifier:
First received: January 25, 2012
Last updated: July 10, 2012
Last verified: July 2012

The purpose of this study is to evaluate the effectiveness of the modified Conjunctival Allergen Challenge (CAC) and observe how the produced allergic inflammation reacts to treatment with a proven ocular anti-inflammatory medication,

Prednisolone, assessed by the following measures:

  • Ocular itching
  • Conjunctival redness

Condition Intervention Phase
Allergic Conjunctivitis
Drug: Prednisolone Sodium Phosphate Ophthalmic Solution 1%
Drug: Tears Naturale II Ophthalmic Solution
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Double Blind (Participant, Care Provider, Investigator, Outcomes Assessor)
Primary Purpose: Prevention
Official Title: A Phase 4, Randomized, Double-Masked, Single Center, Placebo-Controlled Adaptive Clinical Trial, Using Prednisolone Sodium Phosphate Ophthalmic Solution, 1%, in Subjects With Allergic Conjunctivitis to Evaluate a Modified Conjunctival Allergen Challenge (CAC) Model

Resource links provided by NLM:

Further study details as provided by ORA, Inc.:

Primary Outcome Measures:
  • Ocular Itching [ Time Frame: 3 minutes post CAC ]
    Visit 4B compared to 7B

Secondary Outcome Measures:
  • Ocular Redness [ Time Frame: 7 Minutes post CAC ]
    Visit 4B compared to 7B

Enrollment: 9
Study Start Date: January 2012
Study Completion Date: February 2012
Primary Completion Date: February 2012 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Prednisolone
Prednisolone Sodium Phosphate Ophthalmic Solution, 1%
Drug: Prednisolone Sodium Phosphate Ophthalmic Solution 1%
One drop in each eye, four times/day for 8 days.
Placebo Comparator: Placebo
Tears Naturale II Ophthalmic Solution, 1%
Drug: Tears Naturale II Ophthalmic Solution
one drop in each eye, four times/ day (QID) for 8 days

Detailed Description:

Prospective, single center, randomized, double-masked, placebo controlled study. Subjects will be randomized to one of the following treatment arms to dose four times per day (QID) for 8 days between Visits 4 and 5.

  • Prednisolone phosphate
  • Tears Naturale II Ophthalmic Solution (Placebo)


Approximately 19 days


Artificial Tears (Tears Naturale® II)


Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • At least 18 years of age & either sex, any race
  • Willing and able to follow all instructions
  • Positive history of ocular allergies
  • Reproducible positive ocular allergic reaction induced by conjunctival allergen challenge

Exclusion Criteria:

  • Have planned surgery during trial period
  • Female currently pregnant, planning a pregnancy or lactating
  • Use of disallowed medications
  • Have ocular infections, or ocular conditions that could affect study parameters
  • Have moderate to severe dry eye
  • Have used an investigational drug or device within 30 days of start of study
  • Female that is currently pregnant, planning a pregnancy or lactating
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01534195

United States, Massachusetts
Andover Eye Associates
Andover, Massachusetts, United States, 01810
Sponsors and Collaborators
ORA, Inc.
Principal Investigator: Tarek Shazly, MD Ophthalmic society of Egypt, Egyptian Glaucoma Society, American Acadamy of Ophthalmology, American Glaucoma Society, The association for research in vision and ophthalmology, international society of refractive surgery, Pan Arab Glaucoma Society
  More Information

Responsible Party: ORA, Inc. Identifier: NCT01534195     History of Changes
Other Study ID Numbers: 12-270-0001
Study First Received: January 25, 2012
Last Updated: July 10, 2012

Additional relevant MeSH terms:
Conjunctivitis, Allergic
Conjunctival Diseases
Eye Diseases
Hypersensitivity, Immediate
Immune System Diseases
Pharmaceutical Solutions
Prednisolone phosphate
Methylprednisolone Hemisuccinate
Prednisolone hemisuccinate
Prednisolone acetate
Methylprednisolone acetate
Ophthalmic Solutions
Hormones, Hormone Substitutes, and Hormone Antagonists
Physiological Effects of Drugs
Anti-Inflammatory Agents
Autonomic Agents
Peripheral Nervous System Agents
Gastrointestinal Agents
Neuroprotective Agents
Protective Agents
Antineoplastic Agents, Hormonal
Antineoplastic Agents processed this record on May 25, 2017