2. Introduction
Purpose of Ophthalmic lenses
Types
Spectacles
How to take care of ophthalmic lenses
Materials required for cleaning
Cleaning procedure
Additional Instructions
Summary
3.
4. Lenses are transparent objects that bend or
refract light..
Ophthalmic lense is a lens used for correcting
vision in person with visual impairments
(where the focal length of the eye doesn’t hit
the retina).
5. Refractive error correction (myopia, hyperopia
etc)
Protection from injuries
Occupational wear
Protection from harmful rays
For cosmetic purposes
Protection from glare by night drivers
6. Come in a variety of form
Plastic/Glass Lenses worn in glasses..
Contact lens placed in a direct contact with
eye
7. Two lenses in a frame that rests on the nose
and ears (Oxford learning dictionary)
8. Single vision lenses, which provide correction
for only one distance (that is for far or near)
Multifocal lenses (bio-focals, trifocals and
progressive-addition lens), which combine
two or more corrections in a single lens to
provide sharp vision at more than one
distance.
9. According to research of CBS in 2013 more
than 6 in 10 people are spectacles or contact
lens wearers.
The Vision Council of America's claim that 64
percent of people wear glasses.
10. Lens gets scratch easily and scratches can
cause visual difficulties
Cleaning is necessary in terms of hygiene
Clear vision
We can use them for long time if given proper
care
12. Scratch resistant lenses are made by coating
regular plastic or glass lenses with a hard
protective layer. This coating is applied to the
front and back of the lenses.
Many eyeglass lenses today are treated with
scratch-resistant coating during the
manufacturing process.
17. Lens cleaner: a solution of isopropyl alcohol.
Microfiber cloth: it is a special type of cloth
required for wiping glass lens.
Eye glass screw driver: it is used for fixing the
nose pads.
18. Wash and dry hands
thoroughly
Rinse glasses under a
gentle steam of
lukewarm tap water
Apply small drops of
solution to each lens
Gently rub both sides
of the lenses and all
parts of the frame for
a few seconds.
19. Rinse both sides of the
lenses and frame
under running,
lukewarm water
thoroughly.
Gently shake the
glasses to eliminate
most of the water from
lenses.
20. Carefully dry the
lenses and frame
with a clean,
microfiber cloth
Inspect the lenses
again
21.
22. For reasons of hygiene, it is recommended
too clean the sides of the frame and the nose
pads time to time
23. Always keep them in a case when not in use.
If case is not available place them in a safe
spot, with the lens facing upwards
Take the glasses off using two hands instead
of one
Additionally, never leave your eyeglasses
facing down
Do not expose glasses to extreme heat.
24. Though not given proper attention, but
cleaning and caring of spectacles and lenses
is an important task
In the era where we emphasize vision
spectacles need to be given proper care
Therefore, we must be conscious and aware
to keep our spectacles clean and disturbance
free.
25.
26. Q1: Best option for cleaning spectacles
Bleach
Saliva
facial towel
Your shirt
Non of the above