Here the word "light" refers to being able to see the sun and therefore being alive. And, this speaks of the joy of being alive as if the light had a sweet taste. Alternate translation: "it is a joy to be able to see the sun" or "being alive is delightful" (See: [[rc://en/ta/man/translate/figs-metonymy]] and [[rc://en/ta/man/translate/figs-metaphor]])
The "eyes" represent the whole person. This phrase means basically the same thing as the previous phrase. Alternate translation: "for a person to see the sun" or "to be alive" (See: [[rc://en/ta/man/translate/figs-synecdoche]] and [[rc://en/ta/man/translate/figs-parallelism]])