Safety and Efficacy of TOP1630 for Dry Eye Syndrome

This study is designed to assess the safety, tolerability and efficacy of TOP1630 ophthalmic
solution in subjects with Dry Eye Syndrome.

Eligible subjects will be randomized double masked to either TOP1630 or placebo.

Part 1 (time frame 12 days) comprises assessment of safety, tolerability and ocular comfort.

Part 2 (time frame 35 days) comprises assessment of safety, tolerability and efficacy

Inclusion Criteria:

- Be at least 18 years of age;

- Provide written informed consent;

- Have a reported history of dry eye;

- Have a history of use of eye drops for dry eye symptoms;

Additionally for Part 2

Symptoms of dry eye syndrome including:

- Ocular discomfort

- Conjunctival redness

- Tear film break up time

- Schirmer test score

Signs of dry eye syndrome including:

Conjunctival staining score

Exclusion Criteria:

- Have any clinically significant slit lamp findings at entry visit ;

- Be diagnosed with an ongoing ocular infection;

- Have any significant ocular lesion that could interfere with assessment of safety or
efficacy or prevent study conduct in the opinion of the PI;

- Have any planned ocular and/or lid surgeries over the study period;

- Have an uncontrolled systemic disease;

- Be a woman who is pregnant, nursing or planning a pregnancy;

- Be a woman of childbearing potential who is not using an acceptable means of birth
control;

- Have a known allergy and/or sensitivity to the test article or its components;

- Have a condition or be in a situation which the investigator feels may put the subject
at significant risk, may confound the study results, or may interfere significantly
with the subject's participation in the study;