The purpose of this Phase 2a study is to assess changes in tear volume by the non-invasive techniques Ultra High Resolution Optical Coherence Tomography (UHR-OCT) following the administration of P-321 Ophthalmic Solution or Placebo in subjects with tear deficient dry eye disease.
This is a single-center, randomized, cross-over placebo controlled study to evaluate the changes in tear volume by P-321 Ophthalmic Solution and Placebo. The study will enroll subjects with tear deficient dry eye disease to receive sequentially one of two treatment sequences: P-321 Ophthalmic Solution then Placebo or Placebo then P-321. The study will consist of two Phases: In each Phase, subjects will be treated with P-321 Ophthalmic Solution under the same study design. Approximately twenty-four eligible subjects will complete the study with approximately 8 subjects participating in Phase 1 and the remainder of the 24 subjects participating in the phase 2. Decisions on the dose to be used in Phase 2 will be made based on Phase 1 data. The study will consist of three study visits: a Screening Visit (Visit 1), and two treatment visits (Visit 2 and Visit 3). The primary and secondary outcome measures will be assessed at each treatment visit. Safety assessments include adverse events (AEs).
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
TRIPLE
Enrollment
1
Bascom Palmer Eye Institute, University of Miami Health System
Plantation, Florida, United States
Change in Total Tear Meniscus Volume Following the Administration of P-321 Ophthalmic Solution or Placebo
Tear meniscus volume, from measurements of tear meniscus area by UHR-OCT and the length of the eyelid was estimated over time (0 to 6 hours) following administration of placebo or P-321 Ophthalmic Solution.
Time frame: Pre-dose and up to six hours after dose
Lower Tear Meniscus Height as Measured by the Keratograph 5M
Tear meniscus height of the inferior eyelid was measured with the Keratograph 5M over time (0 to 6 hours) following the administration of placebo or P-321 Ophthalmic Solution
Time frame: Pre-dose and up to six hours after dose
Comparison of Lower Tear Meniscus Height Measurements Between UHR-OCT and Keratograph 5M
Tear meniscus height of the inferior eyelid was measured by UHR-OCT and Keratograph 5M over time (0 to 6 hours) following the administration of placebo or P-321 Ophthalmic Solution
Time frame: Pre-dose and up to six hours after dose
Adverse Events
Number of patients experiencing adverse events comparing P-321 to placebo
Time frame: 2 or 7 hours
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