Why is the skin under eyes so delicate?

Why would the whites of your eyes fold or wrinkle, not the skin or eyelid?

• My sister is very worried about her eyes. Yesterday when she went to remove her eye makeup with a cosmetic wipe, and the white of right eye, well the best way to explain it is to pinch the back of your hand and the skin does not bounce back, like when a person is dehydrated. By the way she is not, she drinks enough water to keep a fish alive. She did go tanning a week ago with out her goggles, but when we look up sun burned eyes that was not one of the symptoms. The other symptoms are just pain and redness and very blurred vision. She also has allergies and a sinus thing going on, However, she has dealt with issues like that her whole life. I would take her to the emergency room now, But, she wants to see if any of you have ever had this or may know what it may be before she has to pay a huge medical bill.

• Answer:

  I would make an appointment with an eye doctor, he'll knows what the causes could be but as you already put her to the ER she probably knows by now what it was. I never heard about such an strange thing..