Yes, you could file online for SSI if you meet certain requirements.
What are the eligibility requirements to file online for SSI?
Are you between the age of 18 and 65?
No, I am not between the age of 18 and 65.
Then you cannot file SSI online.
How are the credits needed for survivor benefits calculated?
The number of credits needed for family members to be eligible for survivors benefits depends on your age when you die. The younger you are,  the fewer credits needed.
Are you already receiving retirement or disability benefits?
No, I'm not.
Unfortunately, no relevant information is found.
I'm also statutorily blind, how does that affect my work test?