PHIf we are talking about our ability to see, then no, it is not correct.
It should be “I couldn’t see.”
However, if we are talking about the ability to use a saw, and we are remarking on our difficulty using it to cut a piece of wood, then it would be correct. “I couldn’t saw [that piece of wood].”
It should be “I couldn’t see.”
However, if we are talking about the ability to use a saw, and we are remarking on our difficulty using it to cut a piece of wood, then it would be correct. “I couldn’t saw [that piece of wood].”