Anas (May Allah be pleased with him) said:
I heard the Messenger of Allah ﷺ saying, "Allah, the Glorious and Exalted said: 'When I afflict my slave in his two dear things (i.e., his eyes), and he endures patiently, I shall compensate him for them with Jannah.".

[Al-Bukhari].

وعن أنس رضي الله عنه قال: سمعت رسول الله ﷺ يقول : "إن لله عزوجل قال: إذا ابتليت عبدي بحبيبتيه فصبر عوضته منهما الجنة" (7)، ((رواه البخاري)).