Welch Allyn A Guide To The Use Of Diagnostic Instruments In Eye And Ear Examinations - Quick Reference Guide - Manual (Page 8)

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Common Pathologies of the Eye
PROLIFERATIVE DIABETIC RETINOPATHY
Disc: Net of new vessels growing on disc surface
Retina: Numerous hemorrhages, new vessels at superior
disc margin
Vessels: Dilated retinal veins
END STAGE DIABETIC RETINOPATHY
Disc: Partially obscured by fibrovascular proliferation
Retina: Obscured by proliferating tissue; small area of
retina with hemorrhage seen through “window” of
fibrovascular membrane
Vessels: Abnormal new vessels in fibrous tissue
Vitreous: Prominent fibrovascular tissue
ADVANCED HEMORRHAGIC
MACULAR DEGENERATION
Disc: Normal
Retina: Large macular scar with drusen; prominent
macular hemorrhage
Vessels: Normal
MACULAR DRUSEN (COLLOID BODIES)
Disc: Normal
Retina: Extensive white drusen of the retina
Vessels: Normal
INACTIVE CHORIORETINITIS (TOXOPLASMAS)
Disc: Normal
Retina: Well-circumscribed lesion with areas of hyperpigmentation
and atrophy of retina, white sclera showing through
Vessels: Normal
ADVANCED RETINITIS PIGMENTOSA
Disc: Normal
Retina: Scattered retinal pigmentation in classic bone
spicule pattern
Vessels: Greatly attenuated