If light dazzles you, it makes you unable to see for a short time.

I was dazzled by the sunlight. 阳光刺得我睁不开眼。

If you are dazzled by someone or something, you think they are extremely good and exciting.

I was dazzled by his charm and good looks. 我为他的魅力和堂堂相貌所倾倒。