Philosophical Transactions of the Royal Society of London |
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Pagina
... than by occasionally recommending the revival of them to some of their Secretaries , when , from the particular circumstances of their affairs , the Transactions had happened for any length of time to be intermitted .
... than by occasionally recommending the revival of them to some of their Secretaries , when , from the particular circumstances of their affairs , the Transactions had happened for any length of time to be intermitted .
Pagina 33
... and , in consequence of this , frequent changes are made for , glasses that are more and more concave , until at length the near sightedness becomes so considerable , as to be rendered seriously inconvenient and afflicting .
... and , in consequence of this , frequent changes are made for , glasses that are more and more concave , until at length the near sightedness becomes so considerable , as to be rendered seriously inconvenient and afflicting .
Pagina 34
in succession , until at length it will be difficult to obtain a glass sufficiently concave to afford the assistance that the eye requires . Although near sightedness is in general gradual in its progress , instances occasionally occur ...
in succession , until at length it will be difficult to obtain a glass sufficiently concave to afford the assistance that the eye requires . Although near sightedness is in general gradual in its progress , instances occasionally occur ...
Pagina 38
... his attention to a more distant point , he could prevent them from meeting till they were seven inches from the eye , after which they continued apparently united the whole length of the optometer , which was twelve . inches .
... his attention to a more distant point , he could prevent them from meeting till they were seven inches from the eye , after which they continued apparently united the whole length of the optometer , which was twelve . inches .
Pagina 41
It is evident , that near sightedness has no dependence on the greater or smaller degree of convexity possessed by the cornea , when this circumstance is considered alone ; since the length of the axis of the eye from the cornea to the ...
It is evident , that near sightedness has no dependence on the greater or smaller degree of convexity possessed by the cornea , when this circumstance is considered alone ; since the length of the axis of the eye from the cornea to the ...
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Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1835 |
Philosophical Transactions of the Royal Society of London Royal Society (Great Britain) Volledige weergave - 1836 |
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