Answer:
A 75-year-old patient with painless, progressive central vision loss may have a condition called age-related macular degeneration (AMD). AMD is a common eye disorder that primarily affects the macula, the central part of the retina responsible for sharp, central vision. There are two main types of AMD:
1. Dry AMD (non-neovascular or atrophic): This is characterized by the gradual breakdown or atrophy of the macular tissue, leading to a gradual loss of central vision.
2. Wet AMD (neovascular or exudative): This is characterized by the growth of abnormal blood vessels beneath the macula, which can lead to leakage of blood and fluid into the retina, causing sudden and severe central vision loss.
AMD is more common in older individuals, and it's a leading cause of vision loss in people over the age of 50. It's important for the patient to seek the advice of an eye care professional for a proper diagnosis and treatment options.