Definitely yes, it is dangerous to look directly into a solar eclipse, in other words, you should not look directly at the sun, including during the partial phases of a total solar eclipse, even when it is only the tiniest sliver of light. Even it is more dangerous to looking through a telescope to look the solar eclipse. Because solar eclipse happens when the moon passes between the sun and the earth, and the moon totally blocks the sun. Although the moon is seem like to prevent most of the lights from the sun, there still have strong UV lights and red lights. When you are directly looking into a solar eclipse, these harmful lights would burn your eyes to cause retinal macula that is an unrecovered eye disorder. And you would be blindness after a few hours without any pain.
