Diabetic<unk> , with hard exudates surrounding the blood vessels.<unk>  occurs when fluid and protein deposits collect on or under the macula of the eye (a yellow central area of the retina) and causes it to thicken and swell<unk> . The swelling may distort a person's central vision, because the macula holds tightly packed cones that provide sharp, clear, central vision to enable a person to see detail, form, and color that is directly in the centre of the field of view.
Macular edema
Macular scarring
Corneal neovascularization
Macular corneal dystrophy
Corneal hydrops
Conjunctival concretion
Papilledema
Granular corneal dystrophy