Your Questions About Eye Exercises For Better Vision

Very sudden decline in vision? Should I be worried? (im only 14)?

In about a year and a half, my vision has gone from -2.75 in both eyes to -4 in one eye and -4.25 in the other. My opthamologist said this was very strange because i have not had any growth spurts or anything like that. He has requested i get a blood work up and be sure to have my bloodsugar checked. I am not sure if this is relevant but i have also been having stomach aches lately. I was sick on sunday and monday with what I thought was the stomach flu but I have not been able to eat anything sense then without getting an upset stomach. Last night, my stomach randomly started hurting so bad i was ready to cry. A little back-round info about me (im not sure if it will be helpful): I am just under 5ft 9 and i weigh about 105lb. I have always been tall and slim. I started wearing glasses in 3rd grade and then started wearing contacts last fall. I have gotten a few migraines before but not recently. I don’t eat the most healthy diet (i eat a lot of sugar and crap) but i get quite a bit of exercise (i ride horses and i am starting rugby). I drink A LOT of water and i normally have a pretty good appetite (i just have super high metabolism). Also, i have mitral valve prolapse but it has not caused any problems for me. My cardiologist considered the idea that i might have Marfan syndrome but that was ruled out two years ago. Any ideas about why my vision declined so quickly? Anything I should be worried about?…I will add to this if anyone has other questions. Thanks!