Clarifying the causes of blurry vision.
D000367:Age Factors; D002386:Cataract / Q000150:complications; D006801:Humans; D008268:Macular Degeneration / Q000150:complications; D008875:Middle Aged; D012030:Refractive Errors / Q000150:complications; D014786:Vision Disorders / Q000209:etiology*; D018630:Vitreoretinopathy, Proliferative / Q000150:complications