Answers
poor?
1. Chinese Emperor
used spectacles;
When and why.
2. When was the first
definite proof of
glasses and who was
the pioneer lens de-
signer
3. Who is generally
credited with the in-
vention of Spectal-
ces? What does his
tombstone say?
4. What were the first
lenses used for and
what type of lens was
it?
5. What century were
minus/concave lens-
es introduced?
6. What century were
toric lenses intro-
duced? and by who?
7. Early on, what were
rich peoples glass-
es like compared to
, The wealthy probably had them framed in gold or sterling silver and carried
He used them as a badge of
in a leather covered, silk-lined case, men had monocles or lorgnettes, rich
knowledge and authority and a sign of
women used engraved handheld glasses. While the poor used ready made
afflu-ence. 2283 B.C.
steel rimmed glasses that go around the ear.
13th Century (1268) and it was Roger
Bacon, an english monk philosopher.
Salvino d'Armate (1248) of Italy's
headstone reads "Here lies the
inventor ofspectacles"
plus/ convex, they were used for
reading
16th century lenses were made for
nearsighted people (myopic lenses)
19th Century (1840-1844) By Suscipi
, 8. What were some of metal, wood, or leather, horn or bone
the materials that
the first frames were
made from
9. Frame Evolution - Started with just rivets in the lenses with a hinged bridge to hold them on
the bridge of the nose
-then adding temporal sides of the lenses that included chains or cords with
a type of weight at the end to drape over the ears to help stabilize the lenses
- then they added a frame to contain the lenses (fronts only)
-Around 1677-1743 they designed temples, the first ones were short and
stiff and pressed on the side of the head above the ears. 30 yrs later they
invented some that were longer and designed with a hinge in the middle,
this change added comfort and stability to the spectacles.
- 1st were round, then followed by square and oval in 1830's
- then better material like gold, silver, steel, baleen, brass, tortoiseshell
10. What is lifestyle dis- In addition to fashion and cosmetic dispensing, there is lifestyle dispensing.
pensing? This is when the object is to provide spectacles and /or contacts to meet
a variety of visual lifestyle needs such as sun protection, sports vision, or
specialized tasks.
11. When did the knowl- the 1800's
edge of application F.C. Donders M.D. with his text Accomodation and Refraction of the Eye"
of optics begin to sparked interest of physicians concerning the examination of the eye and
progress and who is the prescribing of spectacle lenses
given credit to doing
so?
12. Starting when was Starting around the 20th century some opticians chose to specialize in
there a distinction of the fabrication of spectacles and were known as "prescription opticians",
the 2 types of opti- today known as dispensing opticians. The other were referred to "refracting