It is narrated from Sayyiduna Anas (may Allah be pleased with him) that I heard the Prophet (peace and blessings of Allah be upon him) say: "Allah, the Mighty and Majestic, has said: When I test My servant by taking away his two beloved things, meaning his eyes, and he remains patient, I will grant him Paradise in exchange for them."
Hadith Referenceالادب المفرد / كتاب / 534
Hadith Gradingالألبانی:صحيح
Hadith Takhrij«صحيح : أخرجه البخاري ، كتاب المرضى ، باب فضل من ذهب بصره : 5653 و الترمذي : 2400 - انظر المشكاة : 1549»