How my friends escaped from a mental institution

Devender Negi and Ashutosh Shukla are my friends but due to some inexplicable circumstances ended up in a mental institution which has an annual contest that picks two of the best patients and gives them two questions.
If they answer correctly, they are released.
Devender is called into the doctor's office first. The doctor says, "Devender, what would happen if I poked out one of your eyes?" Devender says, "I'd be half blind."
"That's correct. What would happen if I poked out both your eyes?""I'd be completely blind." The doctor tells him that he is free to go.
On Devender's way out he tells Ashutosh the questions and answers.
The doctor asks Ashutosh, "What would happen if I cut off one of your ears?" Ashutosh says, "I'd be half blind."
The doctor, slightly puzzled, continues, "What would happen if I cut off both your ears?""I'd be completely blind."
"Ashutosh, how can you explain that you'd be blind?" asks the doctor.
"Well," replies Ashutosh, "my hat would fall over my eyes."