Francesca Gelai reaches into her backpack and pulls out a metal tin. Rattling around inside are a collection of hand-painted artificial eyes.

But when she peels off the lid and spills the contents onto the table, they're not the spherical, marble shape most people would expect.

The curved front of the eyeball gives way to a variety of shapes, almost as though a sphere has been sliced in half and then flattened on one side by a thumb.

"They're like little almonds or lozenges," Ms Gelai said.

"They're all different shapes. It depends on the person's anatomy."

The eyes come in all shapes and colours. ( Supplied: Tom Gelai )

Ms Gelai, 27, and her friend Nelly James, 31, met while working as opticians in a Melbourne optometry practice.

But six years later, after self-funding their training, they are now among the handful of Australians working in the niche art of ocular prosthetics.

"It's somewhere between arts, science and medical," Ms Gelai said.

"There's no course, it's so niche — there's about 10 people who do it in Australia, so we trained in London, Athens, volunteered in Kenya, Ghana, Nigeria."

Now, the friends make eyes out of a garage workshop in Melbourne's eastern suburbs.

It takes two or three days to make one ocular prosthesis. ( Supplied: Tom Gelai )

A step-by-step guide to making fake eyes

The incredibly realistic artificial eyes are made in a painstaking and precise process.

It takes around two or three days to make each one which last around five years.

"There are 40 steps involved ... you have to master each of the 40 steps; the waxwork, even the painting," Ms Gelai said.

Here's a condensed version of their preferred method:

Squirt quick-set silicon into the eye socket to create an impression

Squirt quick-set silicon into the eye socket to create an impression Use the impression to make a wax model that's easy to adjust in shape and size

Use the impression to make a wax model that's easy to adjust in shape and size Create a plaster mould around the wax model

Create a plaster mould around the wax model Paint an iris using powder acrylic paint

Paint an iris using powder acrylic paint Put the painted iris into the plaster mould and fill it with acrylic to create the initial white layer of the eye

Put the painted iris into the plaster mould and fill it with acrylic to create the initial white layer of the eye Buff the acrylic to remove most of the material

Buff the acrylic to remove most of the material Paint the iris again, adding tiny silk threads to replicate veins

Paint the iris again, adding tiny silk threads to replicate veins Add a second layer of clear acrylic to make the eye shine and ensure the iris appears three-dimensional.

Precision is essential throughout the process, Ms Gelai said.

"It's so tiny, there's a lot of room for error. Small mistakes are obvious."

Helping people in Africa

If an artificial eye is not fitted properly, it can cause infection or painful growths in the eye socket — it's something Ms Gelai and Ms James witnessed on recent trips to Africa.

During their visit they made prosthetics and trained others in the art of ocularistry, meeting patients whose eye sockets had been damaged by ill-fitted stock eyes.

"It was meant to be work experience, but when we were there we just noticed how much the profession is needed there," Ms Gelai said.

The women have helped train ocular prosthetists in Africa. ( Supplied: Francesca Gelai )

Many of the patients who had lost their eyes due to disease or trauma had experienced social exclusion due to stigma and superstition surrounding people with a disability.

"People would live in more extreme poverty because they are ostracised from the community," she said.

"It's often believed that the family, like maybe the mother, did something bad when she was pregnant so the whole family is often avoided."

The pair estimate they have spent more than $50,000 on training and volunteer trips over the past four years.

They've started a crowdfunding page which they say will be spent on setting up a clinic in Nairobi, Kenya and furthering their training.

"We'd do these trips and we'd come back and save, save, save, work, work, work, and we've just realised that we could do so much more with a bit more support," Ms Gelai said.

Francesca Gelai and Nelly James want to establish a clinic in Kenya. ( Supplied: Tom Gelai )

Ms James said while the eyes could not restore someone's sight, they did give people a sense of confidence that could change their life.

One mother whose child was born with under-formed eyes had not taken her child out of the house for four years because she was worried about what her community would think.

She did not know that a prosthetic eye was even an option for her child.

Another of their patients has started doing modelling.

"It's so special to be a part of somebody's rehabilitation with something like that," Ms James said.

"Sometimes they can be quite vulnerable. It can be very traumatic for a lot of people, so to be able to help them and share that experience with them, you just learn so much.

"I'm blown away by humans so often."