Crossword clues for Optics. 4 lettersAnswerClueLENSOptical instrumentEYESOptics.LENSOptical pieceALOPAkimbo opticallySCANUse an optical readerDSLRCamera with an optical viewfinder, brieflyLENSOptic glass.LENSOptical part.LENSOptical-instrument partSCANRead data opticallyLENSOptics glassAORB'Which is longer, --?' (optical illusion question)OGLEWoo opticallyUVEAOptical componentOEILTrompe l'__: optical illusionLENSOptical elementLENSOptical glass.LENSOptical item.LASEServe as an optical beamLOOKTake in opticallySCANWhat optical readers doSTYEOptical intrusion?RODEOptical cell used in night visionOEILTrompe l'___ (optical illusion)LENSOptical aidDVDROptical storage format for burning dataTOTOOptically normalLENSOptical deviceUVEAOptical layerFATA___ morgana (optical illusion)UVEAOptic layerUGLYOptically offensiveUVEAOptic layer including the irisSTYEOptical annoyanceSTYEOptical inflammationORTHPrefix with opticCDRSCertain optical mediaOPTICMicroscope lensOPTICSome nerveOPTICVisualOPTICPart of a telescopeOPTICMicroscope partOPTICLike a loupeOPTICEye-relatedOPTICA nerveOPTICSScience of visionOPTICALKind of mouseOPTICSScience of lightOPTICALOf the peepersOPTICALLike some scanners