The actress, who plays Dot Cotton in the BBC soap, has revealed that her eyesight is failing and she can no longer respond to fan mail.
Speaking to the Daily Mirror, Brown has said she is unable to drive and avoids social engagements due to her vision, as her condition is getting worse.
The 92-year-old star soap star said: “I’ve got no central vision at all. I haven’t driven for years and I can’t really go out socially due to my eyesight.
“I never go to soap awards or suchlike now. I don’t recognise people that I know and they would think I was snubbing them.
“And I have got loads of fan letters that I haven’t been able to read or reply to since it all started.”
The actress added: “Just pray for your health and strength, hearing and eyesight, and an active mind.”
Two years ago, June revealed she had successfully undergone surgery to help restore her eyesight.
The actress’s vision improved following a pioneering 60-second treatment, as part of a pioneering trial.
She said at the time: “I can see people’s faces and recognise my children again.”
June has starred in EastEnders since 1985, and has received a Bafta nomination for her work on the soap.