Space Travel can be Bad for Eyesight

People always like travel in summers, in winter, and so on, but Space travel has always fascinated people. The Moon landing was the most memorable event for people who witnessed it. Since then, young boys and girls have grown up harboring ambitions to become an astronaut some day and travel in outer space. It is no secret that space travel is not just about having fun floating around in space. Spending days or even months in space can take its toll on a person’s physical and emotional health. Months of rigorous training are required before one can step into the spacecraft. Despite these challenges, people have remained enthusiastic about space travel.

Study Shows Disturbing Results

However, recent research findings may surprise many people with the effects of space travel on eyesight. A study was recently conducted on 27 astronauts. These astronauts had been in space for around 108 days. On their return to Earth they were asked to undergo a brain scan test. The tests revealed information that could deter many people from undertaking similar expeditions in the future.


The brain scan tests showed that almost 30 percent of the astronauts studied had larger cerebrospinal fluid spaces than normal.The cerebrospinal fluid space is the space that lies around the optic nerve. An increase in the space can mean that signals may not reach the brain from the eye.

Additional Issues

In addition to these results, it was found that almost 22 percent of the astronauts had the shape of their eyeball affected. The eyeball had become more flattened from the back. This could also spell problems in the effectiveness of the eye. Additional issues were also highlighted in the study. These included a bulge appearing along the optic nerve. The pituitary gland also showed some unexpected behavior. The pressure around the brain was also considerably increased, which could lead to blood pressure issues.

NASA Taking Measures & Observation

However, the findings cannot be termed as entirely conclusive because of the absence of control data. Since control data is not available, the researchers have nothing to compare these findings with to say for certain whether these changes are significant and are a result of space travel. This does not mean that the findings do not hold any merit. The eyesight problems associated with space travel have long been under consideration at NASA. The leading space agency of the world is dedicating sufficient resources and time to studying this aspect of space travel and aims to take all necessary steps to protect the well-being of its astronauts.


Space Travel also Effects

Knowledge about the adverse effects of space travel on certain aspects of human health has already been around for a while. For instance, it is accepted that space travel has a significant adverse impact on the bones. However, this latest research on the impact of space travel on eyesight could have a greater impact and might discourage many people from opting space travel as a career. Still, there will be those driven by passion who will brave the risks for the spirit of exploration and discovery.

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