It is said, "Health is wealth". Is it true? Yes absolutely it is true because infirmity of any thing is not appealed by anyone. The calculate behind this is that in order to get rid of the weakness, sometimes handsome money is required to cure the weakness. Population normally agree to spend for the cure of infirmity as there is no alternate way. Eyes are the beautiful gift from God to mankind. If the eye sight weakens, the qoute rises in terms of education, working and in many aspects. Thanks to modern science for developing taste lens and visual glass for mankind.
[b]Lens[/b]It is the invention made earlier than that of taste lens. Population with short and long eye sight infirmity use taste lens and visual glass which may suite them best. Before the coming of lens, Population often wear visual glass but now a day's Population wear contacts to make the eyes perfect. Some merits and demerits of taste lens and visual glass must be discussed:
Merits of visual Glass.
1. It is easy to wear.
2. It needs no chemical clarification to clean the glass.
3. Range of photo-changing colors can be available.
4. Distinct designs in frames are ready to get the glass fit in it.
5. Dust particles are not able to flow into eyes easily.
Merits of taste lens.
1. It is rather difficult to use than visual glass.
2. It helps to boost the personality.
3. A wide range of colors are ready to wear accordingly as desired.
4. No need for any frame. But box is given along with the lens to place them after use.
5. While working in humid health lens is the illustrious to use.
Some disadvantages of visual glass and taste lens.
Disadvantage of visual glass.
1. It may inconsiderate the personality.
2. If a glass of complex estimate is broken, it may take time in manufacturing.
3. Some spots may be present on nose or nearby ear due to abundant use of the frame.
Disadvantage of taste lens.
1. Hard taste lens may irritate eyes and may give woozy vision.
2. Dust may directly reside on the lens.
3. A chemical clarification is required to protect the lens after use.
Optical glasses are ready in assorted frame designs and also in assorted photo sun glasses. There are normally three common types of color in visual glass.
1. Photo brown sun glass.
2. Photo black sun glass.
3. Plain sun glass.
These photo sun glasses turn the color of glass with the intensity of sunlight. Qualities are ready in such photo color glasses. Best capability must be prime to make sure the best succeed with long life.
Contact lenses are ready in wide range than that of visual glass.
1. Hard taste lens have non flexible material with estimate of demerits
2. Daily disposal lens are used for a day and want no cleaning.
3. Silicone wear lens are less irritating and an additional one type of taste lens.
Polycarbonate and Plastic are less expensive material for optic selection while taste lenses are often expensive.
inequity between taste Lens and optical Glass
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