Disadvantages of contact lenses compared with glasses.1. Take a lot of wear, especially in the early stages of use.2. Cost such as water.3. Takes the in fine eyes.4. Not available for a patient with a prism.5. For contact lens 2 I need to take a very long time to train and fine sight.6. Tear easily if not careful.7. The sharpness of the image, especially if it is less than glasses astigmatism.8. Likely to lose liquid and defeated the lens. In the case of those who have never used before.9. Inflamed eyes, if people use to clean bad.
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