0
Spectacles will have as thin or thick lenses as needed to to give the wearer good vision. But sinsce heavy spectacles are more uncomfortable to wear than lighter ones, opticians generally tries to make the lenses as thin as possible.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How is farsightedness treated?
The usual treatment for farsightedness is corrective lenses (spectacles or contact lenses).
How can you clean Vaseline off spectacles lenses?
by cleaning the specs
Who are not suitable for contact lenses?
People who face irritation and are no comfortable..shud not wear lenses..and stick to spectacles..
Are spectacles opaque?
Spectacles is an older word for eyeglasses. If spectacles were opaque, no one could see through the lenses. The glass (now plastic) used in spectacles must be clear and without scratches.
What percentage of people need contact lenses or glasses for vision correction?
Contact lenses are a personal choice. It's up to the 'patient' to decide whether they want to wear spectacles - or switch to contact lenses. There are no publicly-available records to show the figures for spectacles v lenses.
How are nearsightedness and farsightedness corrected?
We use corrective lenses in spectacles. Near sight is corrected with diverging lenses and far sightedness with converging lenses.
How do you get rid of spectacles?
You can be fitted with contact lenses or if an candidate have laser surgery.
What is a pair of spectacles?
A pair of spectacles is a pair of lenses set in a frame worn on the nose and ears in order to correct deficiencies in eyesight.
How many types of spectacles lenses are available in market?
1:Single Vision Lenses 2:Multi focal Lenses 3:Bifocal Lenses 4:Progressive lenses Source Vision Express India
What do the words in this group have in common Microscope telescope binoculars and spectacles?
"They all have lenses"
What is the name for the curved glass in spectacles?
The curved glass in a pair of spectacles is called a lens. You will find that most spectacles are fitted with plastic lenses rather than glass lenses. The curvature of the lens determines the power/prescription/lens strength. Lens thickness, weight and curvature will vary from person to person depending on what type of prescription they need.
What are lenses with thick centers and thin edges called?
Convex lenses
