punctate opacity造句

"' Superficial corneal dystrophies "'- " Meesmann dystrophy " is characterized by distinct tiny bubble-like, punctate opacities that form in the central corneal epithelium and to a lesser extent in the peripheral cornea of both eyes during infancy that persists throughout life.
Historically, an accumulation of small gray variable shaped punctate opacities of variable shape in the central deep corneal stroma immediately anterior to Descemet membrane were designated deep filiform dystrophy and cornea farinata because of their resemblance to commas, circles, lines, threads ( filiform ), flour ( farina ) or dots.
It's difficult to find punctate opacity in a sentence. 用punctate opacity造句挺难的