The oculist from whom you obtained your lenses will tell you their magnifying power.
Eleven came, and with it the oculist, and by luncheon time I had a second blue eye!
He spent a miserable night, and went next day to Louvain, to see the oculist.
The oculist turned to us with an expression of acute interest.
And then the oculist suggested that we should have a look at Sholto.