Hello, I'm told that looking at the eclipse is dangerous to the eyes. How true is that?

I'm assuming you're referring to a solar eclipse, not a lunar one, right?

The latest was on August 01,2008, a total eclipse of the Sun is visible from within a narrow corridor that traverses half the Earth. The path of the Moon's umbral shadow begins in Canada and extends across northern Greenland, the Arctic, central Russia, Mongolia, and China. A partial eclipse is seen within the much broader path of the Moon's penumbral shadow, which includes northeastern North America, most of Europe and Asia.

I observed a solar eclipse before and i just use a film as solar filter. The feeling was different, you could say i wasn't comfortable and a bit dizzy, maybe because of the change of light in my surrounding from bright to dark but it did not harm my eyes.

In case you get a chance to witness July 22,2009 total solar eclipse, use eyeglasses design to protect your eyes, the filter will transmit only .003% of the actual light available to the eyes.

HealthWealth, what is the problem if the moon gets infront on the sun? Why would we need to filter the sun rays??

According to the NASA website, "Exposure of the retina to intense visible light causes damage to its light-sensitive rod and cone cells. The light triggers a series of complex chemical reactions within the cells which damages their ability to respond to a visual stimulus, and in extreme cases, can destroy them. The result is a loss of visual function which may be either temporary or permanent, depending on the severity of the damage."

Sounds bad enough to keep me from looking directly at the next eclipse, that's for sure!

The Total Solar Eclipse can only be viewed directly when filters specially designed to protect the eyes because failure to use proper method in observing eclipse may harm the eyes, it is intense enough to cause retinal burn. Exposure of the retina to intense visible lights causes damage to its light sensitive rod and cone cells. The danger to vision is a significant because retinal injuries occur with no feeling of pain and the visual effects do not occur for at least several hours after the damage has already been done.

But Total Lunar Eclipse are safe to watch, protective filters are not necessary. Total Lunar eclipse was last February 20, 2008.

Looking at solar eclipse with naked eyes is harmful to the eyes. Because, the rays of the Sun are highly concentrated during solar eclipse and looking at the eclipse with naked eyes will damage the retina which may result in loss of vision.

Yes i think if you are looking at a solar eclipse it will harm your eys not on a lunar eclipse.