Sure I Am 47 Yrs Old Male 5' 9" Tall

sure i am 47 yrs old male 5' 9" tall and 178 lbs and my legs get so sore and my knees feel as if something is pushing out on them when i climb stairs i have went to a couple of doctors but haven't figured out what it is my eyes are getting worse more blurry trying to read close things up till 3-4 yrs ago all was good just going down hill quick