Image-changes caused by astigmatism and by correcting cylinders / by G.C. Savage.

L'astigmatisme et les verres cylindriques / par F.-C. Donders ; traduit du hollandais par H. Dor.

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Astigmatism, therapy

Works from the collections

Image-changes caused by astigmatism and by correcting cylinders / by G.C. Savage.

L'astigmatisme et les verres cylindriques / par F.-C. Donders ; traduit du hollandais par H. Dor.