Allergic Conjunctivitis

This study is researching two experimental medicines, freneslerbart and mevonlerbart. Freneslerbart and mevonlerbart can be given alone or together. When given together, the medicine is called "REGN-2Cat". These medicines are also known as the "study drugs". The aim of the study is to see what side effects freneslerbart, mevonlerbart, and REGN-2Cat may have and if they help reduce eye allergy symptoms caused by cat hair/dander compared with a placebo. The study is looking at several other research questions, including: * How much study drug is in the blood at different times * Whether the body makes antibodies against the study drug (which could make the drug less effective or could lead to side effects) * How long the study drug effect lasts

This study is researching 2 experimental drugs, REGN5713 and REGN5715. The study drugs will be either of these drugs given alone (either REGN5713 or REGN5715) or given together (REGN5713 and REGN5715) to reduce eye allergy signs and symptoms due to birch tree pollen allergy. The aim of the study is to see how safe and effective the study drugs are at lowering eye allergy signs and symptoms compared with placebo. The study will also evaluate whether the combination (REGN5713-5715) has different effectiveness than REGN5713 or REGN5715 alone. The study is looking at several other research questions, including: * What side effects may happen from taking the study drugs * How much of the study drugs is in the blood at different times * Whether the body makes antibodies against the study drugs (which could make the drug less effective or could lead to side effects)

This study aims to obtain the lacrimal fingerprint for frequent pathologies of the ocular surface and establish a normative base for each of them.

In this prospective, Phase 2, randomized, double-masked, vehicle controlled study, approximately 60 eligible subjects will be randomized 1:1 to receive either TL-925 or placebo as topical ophthalmic eye drops administered bilaterally. The study comprises of a screening and treatment period using the conjunctival allergen challenge model to evaluate TL-925 for the treatment of allergic conjunctivitis.

Nasal allergen study in patients aged 60+ with or without current respiratory allergy

In this prospective, Phase 2, randomized, double-masked, vehicle controlled study, approximately 66 eligible subjects will be randomized 1:1 to receive either TL-925 or placebo as topical ophthalmic eye drops administered bilaterally. The study comprises of a screening and treatment period using the conjunctival allergen challenge model to evaluate TL-925 for the treatment of allergic conjunctivitis.