How to Get Colored Contacts to Change Your Eye Color
If you want to change your eye color with colored contacts, start by visiting your optometrist, since you'll need a prescription for most colored lenses. Explain to the optometrist which color you'd like, such as blue, green, or hazel for a natural look, or crazy and fun colors, like spirals, zebra stripes, or even tie-dye for fancy dress! Alternatively, if you have darker eyes, choose opaque colored tints, so the color actually shows.
Determine what kind of contact lens to get. This will depend on whether or not you have pre-existing problems with your vision. There are two different kinds of colored contacts: Prescription and Plano. Prescription contact lenses are used on people who are near-sighted, far-sighted, or have an astigmatism. Prescription colored lenses change the color of your eye while also correcting your vision. Color lenses will not be able to treat astigmatism, however, so your vision might be blurry if you have this condition. Plano contact lenses are purely for cosmetic purposes. These contact lenses do not alter your vision in any way. Pick a color. You can either choose an everyday color that mimics the look of a natural eye, or spice up your halloween costume with patterned lenses. Everyday lenses come in a variety of colors, including blue, green, hazel, brown, and purple. Costume contact lenses come in all sorts of crazy colors and patterns like spirals, checkers, at-eyes, zebra, Xs, white-out, and even tie-dye! Make an appointment with your optometrist. Both prescription and plano contact lenses are classified as medical devices by the FDA, so you will need to be given a prescription. Ask your optometrist if colored contacts are right for you. Be aware that not everybody can safely wear contacts, as the ability to do so depends on the shape and health of your eye. Your optometrist will give you proper instructions on how to insert and take care of your lenses to avoid damaging them or harming your eyes. Keep your lenses clean. Always wash and dry your hands before handling your contact lenses and keep your fingernails short to avoid scratching your eye when inserting them. Insert your contact lenses before applying makeup. Similarly, you should remove the lenses before washing off your makeup. This will avoid getting any makeup on your lenses. Don't share your contact lenses with others. Doing so can spread infections or particles from one eye to the other. Clean and change your lenses regularly. Be sure to follow the instructions that have been given to you by your optometrist. Also, make sure that you use fresh solution every time you store your contact lenses. Never reuse your solution. Store your lenses in the proper case. Cases should be changed every three months. Limit wearing your contacts to the length of time your eye-care professional has recommended. Overuse can cause damage to the eye over time. Make sure you don't insert your lenses inside-out. Doing so won't damage your eyes, but it may be uncomfortable. To make sure you are inserting it the right way, hold the contact lens on your finger and view it from the side to see which way it folds. If the top edge of the lens flares out then it is inside out. Be sure to take out your lenses before you go to sleep. Sleeping with contact lenses in your eye may cause irritation and dryness. Remove the lenses if you experience pain or irritation. If you experience eye redness, stinging, burning, or pain, this is a sign that something is wrong. Remove your lenses and stop using your contacts until you have talked to your optometrist. 
Determine what kind of contact lens to get. Pick a color. Make an appointment with your optometrist. Ask your optometrist if colored contacts are right for you. Keep your lenses clean. Insert your contact lenses before applying makeup. Don't share your contact lenses with others. Clean and change your lenses regularly. Store your lenses in the proper case. Limit wearing your contacts to the length of time your eye-care professional has recommended. Make sure you don't insert your lenses inside-out. Be sure to take out your lenses before you go to sleep. Remove the lenses if you experience pain or irritation. 