Eye doctors have warned against wearing costume contact lenses, eye glues and face paints this Halloween.
While fancy dress shops experience the Halloween rush for costumes, Dr Agnes Janovics, common opthalmic physician at the Royal Victoria Eye and Ear Hospital in Dublin, has urged people to plan their costumes with caution.
Dr Janovics has already seen cases of chemical burns to the eyes in patients, and fears the number of cases may rise this weekend.
She has urged those wearing spooky contact lenses or gluing fake lashes onto their eyes to be extra careful.
"People cannot just use any contact lens solution. Very often they rinse the lens with the wrong solution and then they get a chemical burn. It's one of the most common injuries from them."
The potential eye health hazards can also lead to eye infections if not sterilised properly, worn for any extended period of time or fitted correctly.
She added: "Normal eye contact lenses would be sterile but [costume contact lenses] may not be. Chemical burn is really painful for the patient when it happens, and a couple of days off work [is needed].
In the last month, Dr Janovics has already had two separate cases of fake lashes gone wrong.
"People use fake eye lashes with glue, and they end up gluing their eyes together. It's also a couple of sessions in here [before the patient gets better]."
"We also see chemical damage in relation to face paint and hair dye," she warned.
Halloween is one of the busiest nights for hospital A&Es around the country.
Young adults aged around 18 and 20 are a particular risk group for eye injuries, Dr Janovics said, because often they can consume alcohol while letting off fireworks.
"Children and young adults need to be aware, but particularly young adults because they think that they are able to do more. They will use the fireworks and drink a little bit as well."
"I'd suggest that people be careful and that they avoid the eyes when using paint or dye and glue."