https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13999225Edit ImageSaveSaveEditCropCustom TextA sheet showing optical instruments, eye examinations, diagrams to show the effect of lenses and diagrams of the eye with a numbered key. Wood engraving.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 743 px | 300 dpiLarge JPEG 3332 x 2064 px | 300 dpiFree DownloadA sheet showing optical instruments, eye examinations, diagrams to show the effect of lenses and diagrams of the eye with a numbered key. Wood engraving.More