Modifiers matching imperfection:

• minor,
• significant,
• facial,
• cosmetic,
• analog,
• dermatological,
• small,
• opaque,
• visual,
• morphological,
• interfacial,
• macro,
• structural,
• optical,
• crystalline,
• layer,
• localized,
• internal,
• geometric,
• visible,
• large,
• microscopic,
• external,
• physical,
• little,
• institutional,
• geometrical,
• isolated,
• stubborn,
• abstract,
• natural,
• dissimilar,
• under,
• technical,
• spatial,
• exterior,
• out,
• atomic,
• serious,
• major,
• subsurface,
• planar,
• mechanical,
• static,
• local,
• superficial,

Simple categories matching optical:

• catalyst,
• property,
• instrument,
• portion,
• amplifier,
• material,
• part,
• artifact,
• image,
• state,
• display,
• field,
• devices,
• energy,
• system,
• unit,
• parameter,
• film,
• coating,
• section,
• pathology,
• value,
• medium,
• surface,
• pattern,
• device,
• substance,
• interaction,
• concept,
• quantity,
• lens,
• details,
• base,
• equipment,
• component,
• indicator,
• block,
• sensor,
• application,
• switch,
• contrivance,
• drive,
• carrier,
• process,
• layer,
• impression,
• magazine,
• element,
• data,
• circuit,
• communication,
• plate,
• substrate,
• object,
• means,
• mode,
• elements,
• transformation,
• windows,
• implementation,
• glass,
• glasses,
• paraphernalia,
• aberration,
• error,
• perturbation,
• detector,
• command,
• module,
• quality,
• defect,
• waveguide,
• activity,
• instrumentation,
• characteristic,
• communications,
• scopes,
• experiment,
• lense,
• coupling,
• filter,
• marker,
• attribute,
• wave,
• phenomenon,
• power,
• resin,
• munition,
• article,
• coupler,
• condition,
• shutter,
• reader,
• input,
• sheet,
• entity,
• sensation,
• case,
• radiation,
• reflector,
• hardware,
• assembly,
• procedure,
• particle,
• disease,
• penalty,
• function,
• dielectric,
• constant,
• item,
• correction,
• disc,
• force,
• signaling,
• texture,
• observation,
• effect,
• imperfection,
• losses,
• appliance,
• consideration,
• disorder,
• solution,
• measure,
• fiber,
• irregularity,
• feature,
• performance,
• market,
• machine,
• point,
• interferometer,
• figure,
• structure,
• processing,
• product,
• interference,
• apparatus,
• measurement,
• crystal,
• network,
• information,
• distortion,
• fibre,
• deflector,
• disk,