What are the disadvantages of putting on contact lens?

Very few: With practice, putting on contact lenses is a breeze. Perhaps the only complications may be infection if your hands are dirty and with many years of use sometimes the eyelid skin stretches leading to the premature development of droopy or baggy lids. Just be careful not to scratch your cornea.

Corneal ulcer: Contact lenses are foreign bodies in your eyes and therefore can lead to a whole series of problems starting with mild problems such as irritation or worsening of allergies. A corneal ulcer is an infection of the cornea and can lead to blindness. About 1 in 40, 000 people who wear contacts will become blind from the contacts.