Every evening, Wilmington daily commercial., 1918-07-31

Crawford Gorgas They are prob
nbly the most authoritative ndvice
upon medicine md hygiene which
has ever been offered the public in
popular form. This talk was do
iivered by Leitt.-Col. g. y. dc
Schweintz
Everyone realizes the importance q
good eye4lRht, and the need for correcting
faulty vision by the use Of spectacIes. but
the effect of eyestrain upon the genera
health which only became known to the
medical profeasion less than fifty years
AGO. ~ not So generally understood
And eve strain is not always due ~
faulty vision or To excessive nee ~ the
evea Rad LIGHT, badly col0rcd WALLS,
use af the eyea on moving trains and
| street cars. outdoor glarca, arc Some 81
| the causes which may produce severe eye
| strain. resulting in damage to the general
health II ls therefore, very important
| Tint everyone should know how 70 use his
| oves and that II there Is the slightest
reason To suspect that they are suffering
be should consult an ocullHt
| Eye-strain often produces burning,
| srnertinp or aching sensations pr m
| HamatIon az the eyes Themselves y.
ca,,sea the great majority of headaches.
| II alao uroeIucea irritabiity, dUzInef7
norvoua exha,mtion. twifchngs ~ the
| facp. certain types Of dyspepsia and md
gcaiion, nausea. vomiting. pans IN nc
| spine back of the neck, between the
| shoulder blades, and other symptoms
which nre not obviously connected WIN
| the eyes In tho presence Of any 81 tneaG
pynptone the eyes should be examiner
az possible cause.
Tur "wHY' oF FAuTTT VISION
The evc j. essentially lens and faultY
/ y,s,on "a usually duo either 10 IN over
| dcvnIop,nent or 10 an under develop
rnont of II. 81 that Il docs not focus The
| rays nropcrlv IF the eye Is override
| yeioped II u too long from bark to front :
md 3 n near sighted eve II = IS nat
/ long enough. Il - far-Fighted eye
/ Practically everyone ls horn WIN iaf-
alghtcd eyrs AZ tho child grows nc
eve develops. but in mnay CAGES y either
| DEVELOPS TOO rnurh or not enough, fff',lt-
| inp IN either near-sightedness or iaf-
| sighted nesa Another structural tronhie
of the eyes, which fs very common Il
astigmatisrn This means that INC
| rornea. or transparent body which tits over
/ the eva aa crystal fits watch, r. not
| fho right SHAPE so that tho Fays ot hghf
arr not focuRsed properly
All If these troubles nay f~ oorTectFd
Nv wearing The proper spoctacles, and
| everyone who suffers from eye-straln
/ should have hla eyes examined and OBJ
| tain tho proper Fpectacies
But even If the eyrs are normal, or
/ have been made practically normal by the
use of proper glasses, thry may Teahiy
/ ba rjscd n slrh q way M 70 produce eye
STRAIN Insufficient hight is the ca'lae ot
eyr-efraln. and ono should never read m
| dim light The direction of The hight -
also important 1t should cnne from
/ behind and from fhe left side as fhis will
/ tend fn give u m even diffusion, and pre-
| vent the shadow from falling on the work
/ The desk or work bcnch should be OF 2
convenient hekipht. 80 that one Will not
have to bend over his work, thus casting
a shadow upon II.
DON'T READ WHILE TRAVELLING
Never read bv any sort of moving
| light, whether this IS caused by the fhcker-
ing of A naked fame. or by the IoitIng oi 2
| street or railroad tram. Reading on cars
and trains causes the muscles ot the eyes
10 make A constant effort at adjustment,
| and IL n very common and dangerous
wav Of abusing the eyes.
Glare causes much damage to the eyes
| and often when hey are not beIng lseo
| for work Famlhar examples are the
glare from water upon winch the sun
| shines. from a wet road, or from any
white surface, such as ground covered
with snow Glare may produce only
temporary pain, but If sufficiently IN
tense and prolonged, may do very serious
harm,
Part of the harm done by the glare Is
due to what are called the actlnIc rays ol
the sun. and which do not form part OF
the visible light. These actInIc rays are
| what cause the snow-bhndncas when
affiicts travellers across the frozen wastes
of the north.
Daylight IS generally the best light
| which can be used but direct sunlight
| should never be used for any dIfhcuit
eve work, and windows which receive
the direct sunlight should be equipped
| with buff or green Holland shades
| For the same reason, while ceilings may
be white, the walls should be buff or
light olive green In workrOoms or
| factories. where the hight IS dim, white
walls NAV be desirable. Keep these
facts in mind when papering or kalsOmn-
| ing your home or place OF work. Green
and deep buff are the best colors for rooms
/, with much window space, and which get a
great deal of sunlight, while darker rooms
should be done in light buff Flat sky
/ lights are never desirable as the effect IS
the same as working under the open sky.
ARTIRIcIAL LIGHT.
Modern man is forced to work a great
deal by artificial light. Many persons
ascribe all of their eye troubles to this
fact But all of the sources of light in
common use are agreeable 10 the eyes,
if properly used Unprotected lights are
always dangerous: they must be properly
! shaded
Above all, If is foolish to say Il have
strong eyes; they can stand anything
The very best Of eyes can be ruined or
greatly injured by abuse Man IS forced to
use his eyes, under modern conditions,
| for many tedious end difficult tasks, and
| this can be done successfully only If they
are treated with the utmost care Have
your eyes tested so that YOU may be sure
they are normal, and if they are not, use
the proper glasses Never work IN any
I r