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<p>[QUOTE=&quot;Bronwen, post: 11321439, member: 5833&quot;]Our eyes have similar histories, although for a time I had one near- and one far-sighted eye.&nbsp; I did not know implanted lenses could be variable.&nbsp; Despite my telling my surgeon, repeatedly, that I spend most of my time reading or examining tiny details on small objects, he went ahead &amp; placed lenses he told me would make TV watching easy.&nbsp; Fortunately, I find I can read most print, work at the computer &amp; watch streaming on it without needing glasses, which I do need for movies.</p><p><br /></p><p>If we are indeed looking at a signature, I imagine it was done with a diamond tipped tool.&nbsp; Before they had strong artificial illumination or high quality magnification, 2,000 years ago artisans were engraving quartz with this kind of detail:</p><p><br /></p><p><a href="https://medaillesetantiques.bnf.fr/ws/catalogue/app/collection/record/ark:/12148/c33gbfkm9" target="_blank" class="externalLink ProxyLink" data-proxy-href="https://medaillesetantiques.bnf.fr/ws/catalogue/app/collection/record/ark:/12148/c33gbfkm9" rel="nofollow">BnF CdM Achilles kitharoides</a></p><p><br /></p><p>This piece is 16mm high, 13mm wide, &amp; convex:</p><p><br /></p><p>[ATTACH=full]541075[/ATTACH]</p><p><br /></p><p>The Metropolitan Museum has a large display of seals from antiquity, and a great many are even smaller than this.[/QUOTE]</p><p><br /></p>

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