What is the meaning of Macular?

Relating to the macula, the area of the retina responsible for detailed central vision

Having macules; spotted

to stain

to taint (to contaminate or corrupt something with an external agent, either physically or morally)

macular (pertaining to the macula)

stained, tainted

to stain

macular (relating to the macula)

Source: wiktionary.org