Optical Lenses & Eyes

Posts Tagged ‘Disadvantage’

It is the invention made earlier than that of contact lens. People with short and long eye sight weakness use contact lens and optical glass which may suite them best. Before the advent of lens, people often wear optical glass but now a day’s people wear contacts to make the eyes perfect. Some merits and demerits of contact lens and optical glass must be discussed:

Merits of optical Glass.

1. It is easy to wear.
2. It needs no chemical solution to clean the glass.
3. Variety of photo-changing colors can be available.
4. Different designs in frames are available to get the glass fit in it.
5. Dust particles are not able to flow into eyes easily.

Merits of contact lens.

1. It is rather difficult to use than optical glass.
2. It helps to boost the personality.
3. A wide range of colors are available to wear accordingly as desired.
4. No need for any frame. But container is given along with the lens to place them after use.
5. While working in humid condition lens is the paramount to use.

Some disadvantages of optical glass and contact lens.

Disadvantage of optical glass.

1. It may inconsiderate the personality.
2. If a glass of complex number is broken, it may take time in manufacturing.
3. Some spots may be present on nose or around ear due to abundant use of the frame.