Dr Kwan believes eyes will grow 'unnervingly large' as the human race colonizes the solar system and people start living in the dimmer environments of colonies further away from the sun.

Eyes will also develop in other ways - that would seem startling from our viewpoint today - with new features including eye-shine enhance low-light vision and even a sideways blink from re-constituted plica semilunaris to help protect our eyes from cosmic rays.

By the change to our appearance may happen much faster than these timeframes.

In fact, by 2050, a completely new type of human will evolve as a result of radical new technology, behaviour, and natural selection.

This is according to Cadell Last, a researcher at the Global Brain Institute, who claims mankind is undergoing a major 'evolutionary transition'.

In less than four decades, Mr Last claims we will live longer, have children in old age and rely on artificial intelligence to do mundane tasks.

This shift is so significant, he claims, it is comparable to the change from monkeys to apes, and apes to humans.

'Your 80 or 100 is going to be so radically different than your grandparents,' Mr Last says, who believe we will spend much of our time living in virtual reality.

Some evolutionary scientists believe this age could be as high as 120 by 2050.

Mr Last claims humans will also demonstrate delayed sexual maturation, according to a report by Christina Sterbenz in Business Insider.

This refers to something known as life history theory which attempts to explain how natural selection shape key events in a creature's life, such as reproduction.

This shift is so significant, says Mr Last, that it is comparable to the change from apes into humans. 'Your 80 or 100 is going to be so radically different than your grandparents,' he claims

Mr Last predicts that by 2050, humans will live significantly longer, robots will replace unskilled jobs, women will have children older and people will have more time to engage in cultural activities

It suggests that as brain sizes increase, organisms need more energy and time to reach their full potential, and so reproduce less.

Instead of living fast and dying young, Mr Last believes humans will live slow and die old.

'Global society at the moment is a complete mess,' he told MailOnline. 'But in crisis there is opportunity, and in apocalypse there can be metamorphosis.'

'The biological clock isn't going to be around forever,' he added, and said that people could pause it for some time using future technology.

His views are detailed in a paper, titled 'Human Evolution, Life History Theory, and the End of Biological Reproduction' published Current Aging Science.

The study predicts that by 2050 a typical male worker, aged 35, will have red eyes, a smaller penis, a larger brain, advanced language skills and bioimplants to improve their performance