Edwards syndrome is a chromosomal abnormality characterized by the presence of an extra copy of genetic material on the 18th chromosome, either in whole (trisomy 18) or in part (such as due to translocations).The additional chromosome usually occurs before conception.t is the second-most common autosomal trisomy, after Down syndrome, that carries to term. Edwards syndrome occurs in around one in 6,000 live births, and around 80% of those affected are female. The majority of fetuses with the syndrome die before birth. The incidence increases as the mother's age increases.
Dilating drops make the pupils of the eyes bigger so that the doctor can see the back of the eye. Because the pupils are bigger, you are more sensitive to light until the effect wears off, and it's a good idea to have sunglasses for use after the exam. Jupiterimages/Goodshoot/Getty Images.
What Are Dilating Eye Drops? Sep. Your pupils are the round, black openings at the center of your iris (the colored part of your eye). Your iris opens and closes the pupil to allow more or less light into the eye. For your eye doctor to look inside your eyes, your pupils must be dilated (widened). Dilating eye drops enlarge your pupils and keep them from getting smaller when the doctor shines light in your eyes. Next What to Expect When Your Eyes Are Dilated. Related What to Expect When Your Eyes Are Dilated.