Chief adviser Dr Muhammad Yunus on Saturday visited the National Institute of Neurosciences and Hospital (NINH) at Agargaon in Dhaka.
He enquired about the condition of the people who are undergoing treatment at the hospital after being critically injured by security forces during the student-led revolution in July-August.
At least 11 people, including eight students from universities and colleges, have been treated at the hospital.
"He saw the condition of four students who are being treated in the Intensive Care Unit of the hospital," Kazi Deen Mohammad, the director of the hospital, said.
"All four were hit by bullets in their heads. Their condition is being improving," the director said. Badrul Alam, the joint director of the institute, and senior physicians of the hospital were present.