A four-year-old boy has lost his sight due to a bizarre condition that causes his eyes to bleed and pop out.

Sagar Dorji, from Lakhimpur in the northeastern Indian state of Assam, only developed the condition recently.

His devastated parents are desperate to find out what is wrong with him - but cannot afford the medical tests required.

Sagar's mother, Kusum, said the problem began around three months ago.

'First, his eyes got swollen and looked bloodshot - then they started to come out of the socket and bleed.

'I don't know whose curse has fallen upon us.'

Unlike other cases of bleeding from eyes and ears, the blood forms a clot in Sagar's eyes and eventually dries up there.

So bad is his health that he has now been moved to a state-run facility for better treatment.

Doctors want to perform lab tests to ascertain what is wrong - but Sagar's parents cannot afford them.

'It would cost around Rs 12000 [£120 or $156] , but I don't have money to fund that,' said his father Pratim Dorji, 35, who works as a labourer.

Sagar's condition has sparked intense interest in the medical community in Guwahati, Assam's largest city.

Doctors, who are reportedly treating him for cancer, have reportedly refused to comment on the why this is the course of action they have taken.

And Sagar's parents are unconvinced. 'I am not happy with the treatment provided at the hospital,' his father said.

'I have seen no improvement in his condition since he was brought to the Guwahati hospital last week.

'But I have no option but to continue this treatment as I cannot afford to fund costly treatment in a bigger city like Mumbai or Delhi.'

In the meantime, the family's neighbours are trying to raise awareness of Sagar's plight - and money for the crucial medical tests.

Today his mother issued a desperate plea for help.

'I appeal to all kind-hearted people to help me save my son.  Any other parents will be able to feel my pain.

'Help me save my child by contributing whatever you can. Those of you who cannot, please pray for him.'

One social activist, called Biwasjit Barman, is trying to gather funds among his friends and family.

'I have also requested the Government to intervene and help this child before it is too late,' he told MailOnline.

'I am also a father, I can feel what Sagar's father must be going through.'

In March MailOnline reported on the story of Marnie Harvey, a 17-year-old who bled from her eyes - but doctors had no idea why.

Her ordeal began in 2013 when she woke up with blood spatters on her pillow.

The condition got worse and she now seeps from her nose, ears, fingertips, scalp and tongue.

Often, the bleeding is accompanied by splitting headaches and sickness - and she missed weeks of school and had to quit her job in retail as a result.

She has seen a plethora of specialists and cut out a range of ingredients including gluten and sugar from her diet, but nothing works - and nobody can diagnose the cause.

Miss Harvey, from Stoke-on-Trent, is thought to be the only person in the UK with this unique set of symptoms, causing doctors to dub her ‘The Mystery Girl’.