If you wear contacts and feel foggy in front of your eyes, you need to remove them because they may cause corneal dehydration and oxygen deprivation due to long wear times, which can often lead to corneal edema and even damage to the corneal epithelium. In this case, you should remove your contact lenses, go to the hospital, and check for damage to the corneal epithelium or significant corneal edema. If there is damage to the corneal epithelium, anti-inflammatory drops and corneal nourishing drops should be used for recovery, which is usually quicker and can be healed in 1-2 days. However, if the corneal edema is caused by the lack of water and oxygen in the cornea, the cornea needs to be moisturized with artificial tear drops and the nerves need to be nourished with corneal nourishing medication in order for the edema to gradually go down. Regardless of whether it is epithelial damage or edema, contact lenses should not be worn again during the treatment period, and you must wait for the cornea to heal before you can continue to wear contacts or other types of contact lenses.