Modifiers matching implementation:

• real,
• successful,
• effective,
• technical,
• open,
• inexpensive,
• optical,
• practical,
• automotive,
• physical,
• analytical,
• alternative,
• supporting,
• concrete,
• neural,
• passive,
• financial,
• institutional,
• home,
• clinical,
• visual,
• mental,
• functional,
• computational,
• traditional,
• several,

Simple categories matching optical:

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