The Norfolk Virginian. [volume] (Norfolk, Va.) 186?-189?, 1897-07-04
sss ass go i ih q e|hia Organ caa
Asn DOE isspfataly, leeaisd.
Use IL IlR|E auERIsEA RAYS
f sa GRssataDn hereto fore Performed
lin: assse Oh I.sss Uncsssasnty ID
!,sss Exasated wish Unerrins
lSssesy The Method Described ia
lsosu 20 Sufferers.
(Phlladelphia Record.)

~ kfpHa bly, n1;nQO branch OF meticine or
3 slirSffys have HE R0entgen rays been
%Gfs more serSace, than In ophthalmology.
d BY ehelf use TT to now possible to and
by tlietr use ~ VIII be possible to dag
4 91ose, With absolute certainty many cases
;$ot foreign bodies embedded In the eye
& sYsl.sssn have heretotoIe bafiled the eye
h raeofs. by former methods 1t was
Il not AftF avs possible TO determine even
tlie location OF g. foreign
& sa9s1ays srne> even, Its presence in sonle
& Saseea and hence the. patient was sub
S5eetsd te the danger losing his sight
II iT7n he the surgeons We're compelled to
i sas1l ere TO an expectant plan Of treat
Il IneTrt unit symptoms, which would con-
n n tsNstpely proy G the presepce OF the for
sEefgH sssubstancb would appear. These
IS symptoms !I.ay manifest themselves
I: only when IT is% too late to save the eye.
Alaong those who have achieved the
4 Hsreat est 81 ecess with the Crookes tube
q & 1lSi This kind .4fof work IS DR.. William
n Marriek Sweet, who detailed his results
s. ~ g: Paper. recently before the American
81 edacaa Association DR. Sweet is chief
Is clinical assistant OF the eye department
\ tal;I and tp him 70 to be given the credit
& 81 Sstfev chopin this method OF diagnosis
u so tIa the presence. and location Of %
81 Sofetgnl body IN the eye? can now be de-
5aefvnthed with great accuracy.
TIL METHOD DESCRIBED.
81 It'll the assistance OF H. L. Sayen,
v eleots.icals expert:of Queen & Co.'S labor
y sa'cpIHs an * ray apparatus was fitted UP
81 IN tie anato mlcsa laboratory Of the
Y efferson Al lead College. where the ex-
u periments were conducted. The method
B arriv ed vt is We'll shown in the accom-
ID rytngt illustrati Ion aud Its details are
Y as sfqlloWa! y An aluminium. plate holder
81 % fastened to the same side of the head
/ sStoss e 10 the Injured eye by means Of
& Two headhands To the front margin of
II Sneas frame end at right angles to IT Is
M sttache ed p steei rod. on which slides an
u ther. rod at right angles to the first
NJ carrying two Ind icNtorY made OF Sen-
~ f1sr wire with rounded ends. These in
& x . tors are parallel and at 3. certain
n liked: distance from each other and can
q be Sd id 1usted that one OF them points
Ri directly ito the centre OF the eyeball
s. IW9s nlates or x ray films are inserted
q anathe frame hodder. two instead Of one
d being Snsed ITO avoid any possible con-
a ftsSien fhfch may arise as a result Of
II and file FIRST exposure Is made with the
GsTupkes tVhe at a. horizontal level ofsthe
81 injured eye and art a right angle to the
plate Sho1 den. The location OF the body
!. with reference 20 the Indicators Is noted
4 q nd. q; second exposure made with the
4 tube lowered SO that the axis of the rays
& from AN angle OF. about 20 degrees With
IS tltat OF the: first; exposure, the angle,
I tyoweYeI, being .uflim porteart as long as
/ II it tfhe g Wo exposures give different rela-
L tfcTs OF the fored en- body to the lndica-
b tors ,Y "a rter the exposures have been
made the. q pparatus Is removed without
Interfering with the relation OF the in :
sdtcatora .cnes to- another.
+ sOcATING THE PARTICLE.
IS: The apparatus is then attached to an
upright support.Yand piece Of paper or
1 pnes0f the negatives substituted for the
plate hol der. "a lighted candle Is now
placed In such q position that the shadow
Cast by che zinc icators will occupy the
Same position as the impression record
led Scn the photographic plate by the
sTaYsfrom the Crookes tube. a small OBJ
S'Ject Is then held SO that 1t will throw a
shadow exactly where the foreign body
- has Impressed the Photographic film.
{, Ihe foreign body in the eye must then
he sltuatea at some point alongsthe line
y OF .the shadow made by the small test
object. The candle is now moved so that
the candle will be. the same az that
I SHOWN upon the second negative. The
;;S small. test object Is again employed and
moved Until Its dow corresponds to
4 That made; by the foreign body on the
3$econd negative. Where the two lines OF
II shadow made by the test object cross
+ CORES onds to the situation Of the for
,etgn body In the eye. knowing the dis
Stance OF the &indlca tor. pointing 10 the
Il center Of the eyeball, from the front OF
The sye and the distance between the in
tdicator. tire exact distance Of the foreign
4 BODY from the :cornea (front portion OF
ne eye fae well az its situation in refer
8ence to, the axis OF the eyeball, can be
read liz determined. i;;;ss,,
.aas5s q order to simplify the work Of locat-
Ing the point Stof, 1.-THE crossing Of the
h lines of shadow yof the test object made
by the candle flame, ADr. Sweet is having
y mad lie. la.1$Wtre skeleton OF an eye with
It's conponent parts in the same size
So Nd sitlona as In the average human
faye. .sSs. .s E;ss3s;. /. q 81 III