This study tests a new **eye drop** for people with **Dry Eye Disease** (DED). The eye drop contains **Recombinant Human Nerve Growth Factor (rhNGF)**, which might help with dry eyes. Participants will use the drops three times a day for **4 weeks**. There will be **5 visits** to the study center over **8 weeks** for check-ups and filling out forms. These visits include eye exams to see how well the eye drops are working and if they are safe. **Key Points:** - The study lasts **8 weeks**, with eye drops used for **4 weeks**. - Participants must attend **5 study visits**. - You can't join if you have infections, other eye problems, or recent eye surgery. To join, you must be over 18, have had dry eye for at least **6 months**, and meet other health criteria. You can't join if you have other eye issues, plan eye surgery, or have certain allergies. Pregnant women or breastfeeding mothers cannot participate. Participants must agree not to join other studies during this time.