You will have to edit your personal information in the My Info section of the online program.
Click on My Info on the left side of the screen.
Click on your name and then on the Revisit button
On the screen Let's check for some other situations
Check the box labeled I was considered legally blind as of December 31, 2024 and Continue
If you have already filed the 2024 tax return, you will have to amend the tax return to add that you are legally blind.
See this TurboTax support FAQ for amending a current year tax return - https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-return/amend-federal-tax-return-curr...