Do you have research on truffles, which were mentioned in the Hadith: "Truffles are a form of manna, and their water is a cure for the eye"?

Al-Bukhari and Muslim narrated that the Prophet, peace and blessings be upon him, said: "Truffles are part of the mann, and their water is a cure for the eye." Truffles are plants that are not cultivated; they grow in the spring and are called "daughters of thunder." There are several interpretations regarding the meaning of "their water is a cure for the eye." Some say it is mixed with eye medicines, or used pure after being roasted, or that the intended meaning is the rainwater by which they grow. Al-Nawawi preferred the view that their water is an absolute cure for the eye, and experiments have proven this. Al-Tirmidhi narrated with a sound chain that Abu Hurairah used truffle water to treat his slave girl, and she was cured. Ibn Hajar mentioned that using what is mentioned in the Sunnah (definition) with sincerity is beneficial, and it suffices that the saying of the Prophet, peace and blessings be upon him, is a revelation.