There are some yellow spots in my eyes?and my eye sight is weak........what is the reason of yellow spot in my eye?

Pinguecula: Yellow spots on the white part of the eye can be due to: pinguecula (most common: due to sun exposure), nevus (a pigmentation like a freckle), nodule (due to an autoimmune condition and is rare), vitamin deficiency (rare). An eyemd can look under the microscope diagnose and give you peace of mind. Weak eye sight: likely need glasses. If any eye pain, see eyemd asap. Best regards.