AUSTIN (KXAN) — With just a few days until the annular solar eclipse, a number of Central Texas libraries will be handing out free eclipse glasses.

Eclipse glasses are necessary to prevent damage caused by looking at the sun, which is called eclipse blindness or solar retinopathy. The damage could heal over time, but eye damage could be permanent, optometrist Dr. Andrew Neighbors told KXAN.

The Solar Eclipse Activities for Libraries program will give 5 million glasses to 10,000 libraries nationwide, including more than 20 libraries or library systems in Central Texas, according to the program website.

The Austin Public Library said on social media it had glasses available at APL locations with a limit of two glasses per person. As of Friday, all APL locations are out of eclipse glasses, according to the library’s website.

Some eclipse watch parties will also have glasses available.

Here’s a list of some participating libraries in Central Texas, according to the program:

Austin Public Library, any branch location

Bertram Library, 170 S. Gabriel St., Bertram (available Oct. 11-14)

Buda Public Library, 405 Loop St., Buda (available at Oct. 14 event)

Florence Public Library, 207 E Main St., Florence (available at Oct. 11 event)

Georgetown Public Library, 402 W. 8th St., Georgetown (limited to one per household)

Herman Brown Free Library, 100 E. Washington St., Burnet (available Oct. 14)

Johnson City Library, 501 N. Nugent Avenue, Johnson City (available at Oct. 14 event)

Taylor Public Library, 801 Vance St., Taylor (available at Oct. 14 event)

Westbank Community Library, 1309 Westbank Drive, Austin; 9411 Bee Cave Road, Austin (available Oct. 14)

Editor’s note: The list of libraries has been edited based on availability. People can check with their library to see if supplies are still available. A map of libraries and the eclipse path is available online.