Safety, Tolerability and Pharmacokinetics of Felbinac Trometamol Eye Drops

To evaluate the safety and tolerability of felbinac trometamol eye drops of single-dose, multiple-dose, dose escalation in healthy subjects, for providing the basis for the dose setting in the later clinical study.

In the single-center, randomized, double-blind, placebo-controlled, single-dose dose escalation study, 48 healthy volunteers will be divided from low dose to high dose into 5 single-dose groups of 0.025%, 0.05%, 0.1%, 0.2% and 0.3%, with both male and female subjects in each group. The study was designed as double-blind, all the single-dose groups containing 10 subjects except the single-dose group of 0.025% containing 8 subjects，and with 2 placebo controls in each group.

Pharmacokinetics blood sampling in different dose groups was designed from low dose to high dose into 4 single-dose groups of 0.05%, 0.1%, 0.2% and 0.3%.

In the single-center, randomized, double-blind, placebo-controlled, multiple-dose dose escalation study, 20 healthy volunteers will be divided into low dose and high dose groups of 0.1% and 0.2%, with both male and female subjects in each group. The study was designed as double-blind, all the dose groups containing 8 subjects and 2 placebo controls.

Eligibility Criteria:
Inclusion Criteria:

* 18 to 45 years old, male or female;
* Weight: Male subjects should not be less than 50.0kg and female subjects should not be less than 45.0kg, BMI within the range of 19.0 and 26.0 kg/m2(Including the threshold);
* Eyes corrected visual acuity should be ≥ 1.0 in both eyes and intraocular pressure, slit lamp and fundus examination were normal or abnormality with no clinical significance;
* The female subjects should be guaranteed to take effective contraception before selected in within a month prior，and all the subjects Regardless of the gender are willing to take effective contraception and no pregnancy is planned for the next 6 months;
* Volunteer to participate in the study and sign informed consent.

Exclusion Criteria:

* With ocular diseases, including a history of inner eye surgery or laser surgery;
* Subjects who had worn contact lenses within 2 weeks prior screening or need to wear it during the study;
* Subjects who had taken any medicine including Eye ophthalmic drug within 2 weeks prior screening；
* Subjects with a history of central nervous, mental, cardiovascular, renal, liver, respiratory, metabolic and musculoskeletal systems;
* Subjects'pretest physical examination, vital signs, ELECTRO cardiogram, laboratory examination and investigator's determination of abnormality with clinical significance.
* The results of eight immunological tests(HBsAg、HBsAb、HBEAG、HABEAB、HbcAb、HCVAb、TPPA、HIV-P24 Antigen/antibody) is abnormality with clinical significance.
* A history of clinically significant allergy, especially drug allergy, allergy to aspirin or other non-steroidal anti-inflammatory drugs or known allergy to the drug component or biphenylacetic acid;
* The average daily smoking amount in the first 3 months was more than 5 cigarettes;
* Alcohol dependence is suspected or confirmed, with alcohol intake averaging more than 2 units per day for 3 months (1 unit =10 mL ethanol, i.e. 1 unit =200 mL beer at 5% alcohol or 25 mL spirits at 40% alcohol or 83 mL wines at 12% alcohol) or alcohol tests positive;
* A history of drug abuse, or positive urine tests for ketamine, morphine, methylamphetamine, dimethylene dioxymethamphetamine, or tetrahydrocannabinic acid;
* Participation in other the clinical trial within 3 months before;
* Blood donation or blood loss ≥400 mL within 3 months before;
* Pregnant or lactating women and those planning to become pregnant;
* Subjects with a history of needle and blood dizziness or intolerance to venipuncture;
* The investigator thinks it is not suitable to participate in this study.