Praise be to Allah, and may Allah’s peace and blessings be upon the Messenger of Allah, his family and his companions.   Wa alaikum assalam wa rahmatullahi wa barakatuh.   As to what follows:   In response to your question, we say:     If a person senses the taste of eye drops in his mouth then he should not swallow. However, if the eye drops inadvertently  enter his throat then there is no problem. Eye drops when applied to the eyes do not break fast and the fast of a person who applies them is valid because, firstly, they are not food or drink. Secondly, the eye drops would have inadvertently entered his throat and he did not intend this. Thirdly, the eyes are not the natural accustomed entry points into the body. All these points mean that the opinion which states that eye drops break fast because they are liquid is not correct. Thus if a person needs to use eye drops he should be careful not to swallow the  taste that he gets from the drops that infiltrate and reach his throat.