I got some workshop glasses made. The optician (non chain) asked a lot of Qs and said let me work something out, extending the range of sharpness with my eyes adjusting depth of field. I finished up with occupational varifocals (wide varifocal bit) that, together with my eye focussing, let me see sharp from about 150mm (read a vernier) to just under 1M. Excellent! If i really need to get closer i bought some clip ons, look like frameless spectacles without side pieces, that flip up when not needed - 3 diopters I think - proper lenses made of glass, cost about a tenner some years ago.
Cheapie alternative is a pair of supermarket readers ofteh highest strength; wife uses these for embroidery - cost about 2 quid in lidl.