Light passing through the body and into the womb has an important role in the developing eye, US researchers have discovered.
A study, published in the journal Nature, showed that mice spending pregnancy in complete darkness had babies with altered eye development.
It indicated tiny quantities of light were needed to control blood vessel growth in the eye.
Read MoreIf you have rheumatoid arthritis (RA) and are thinking about starting a family, you probably have lots of questions and concerns. Will your RA affect your chances of getting pregnant? Are your medications safe during pregnancy? What if you decide to stop taking them? Will your RA flare?
Read More