...for Life,1 &c. &c. &c. ! ! ! This would be irksome to the Writer, and useless to the Reader. - - " When persons who have long patronized One Eye, and slighted the Other, take to Spectacles, they «Ш (generally) require Glasses of a difierent focus for each Eye. " When You go to an Optician's...

...OF THE EYES : PRECEPTS FOR THE , IMPROVEMENT AND PRESERVATION OP THE SIGHT. BV PR. K1TCHINEK. WMBN persons who have long patronized One Eye, and slighted...with the same Glass, at exactly the same distance. After a certain Age, the relative •harpncss of the sight of the Eyes varies as much as does the quickness...

...different focus to that which has been employed with the glass — and is often irreparably impaired. When persons who have long patronized one eye, and...require glasses of a different focus for each eye. The eye least used, soon becomes weak, and in the course of a little time almostuseless. This fact...

...easier; and the labour of each eye is considerably lessened. When persons who have long patronised one eye and slighted the other, take to spectacles,...(generally,) require glasses of a different focus for eacli eye. Forcing the et/et to work at night, even fora few moments after they are tired, will often...

...causes the idle eye to become of a different focus to that which is employed with the glass, (p. 13.) "When persons who have long patronized one eye and...require glasses of a different focus for each eye." P. 14. The average period of the 'eyes requiring spectacles to read with is abont 160 161 the 45lh...

...causes the idle eye to become of a different focus to that which is employed with the glass, (p. 13.) " When persons who have long patronized one eye and slighted the other, tale to spectacles, they will (generally) require glasses of a different focus for each ere." PM The...