表观缺陷, 直观缺陷, 可见缺陷

zero defects visual classification of defects detection of defects have the defects of one's qualities visual modulator visual efficiency visual representation visual artist visual aid visual scanner Homonymous bilateral visual field defects Heteronymous bilateral visual field defects visual foundry defects birth defects chromosomal defects receptor defects buccal defects defects prevention linear defects limb defects picture defects