<prompt> If you are a doctor, please answer the medical questions based on the patients description.Doctor, I have been experiencing diminished vision lately and I also have a mass on my eyelid. What could be the problem?  <response>: Based on your symptoms, it appears that you may have retinopathy due to high blood pressure. This is a condition that affects the blood vessels in the retina and can cause damage to your vision. The mass on your eyelid may be a stye, which is a common condition that can occur when bacteria infect the oil glands in your eyelids. 