Zimbabweâ€™s President Robert Mugabe is not asleep when he closes his eyes for long periods during meetings but is resting his eyes, his spokesman has said.
â€œThe president cannot suffer bright lights,â€ George Charamba was quoted as saying by the state-run Herald newspaper.
Mugabe, 93, has been seen apparently sleeping at several events, leading to speculation about his fitness.
He intends to stand in presidential elections next year.
The president is currently receiving specialised medical treatment for his eyes in Singapore.
â€œI feel like a failure when there is this reading that the president is sleeping in conferences – no,â€ Charamba said.
He then compared Mugabe to the anti-apartheid icon Nelson Mandela, whose eyes were sensitive to flash photography following years of working in a limestone quarry while imprisoned on Robben Island.
President Mugabeâ€™s foreign trips are often criticised in Zimbabwe, where healthcare has declined in recent years and medical professionals say they are poorly paid.