It was a well documented fact that spending time in outer space was going to affect your health adversely. Your sleep cycle is affected, you may have suffered atrophied muscles and apparently some may even be having trouble with their eyesight.

Now researchers at the Biomedical Research and Environmental Sciences Division at NASA Johnson Space Center in Houston, Texas have found out that genetic differences in enzymes present in the human body may be the actual culprits when it comes to many diseases.

Scott M. Smith who is involved with the research said that they have identified a genetic link in astronauts with vision issues. While they are yet to identify why, or how it happens exactly, they are hopeful of studying the people who are suffering from eye trouble after being in space to be able to identify the cause and eventually find a cure for the problem.

The results of the scientific study will naturally have far fetching implications on future astronauts who will work for NASA in outer space. The researchers hope that more work into the genetic and nutritional reasons for the issues arising from these enzymes will help them solve the riddle faster.