Before purchasing a color contact lens

カラーコンタクトに関する注意事項
  • Color contact lenses are highly controlled medical devices.
  • Advanced management medical devices are medical devices that are highly risky to life and health when side effects or disabilities occur, including kidney dialyzers and AEDs.
  • Contact lenses are highly controlled medical devices whose use / management has been entrusted to general users.

Things you always want to protect

Please visit ophthalmology and purchase
If you use a product that does not fit your eyes, it may cause a foreign body feeling during wearing.
In addition, there are cases where you can not wear a color control with dry eye or allergy.
Even when you use [no degree], please be sure to purchase a color control suitable for your own eye after seeing your eye.
Please take a periodic medical examination at eye care
Even if you are using a color control without problems, there is a possibility that abnormalities and problems without subjective symptoms may occur.
Please take regular checkup in ophthalmology once every 3 months.
Please do the correct lens care
The type of repeated use (other than 1day) will continue to use germs and dirt will adhere to the lens while continuing to use.
Unless proper care is taken, germs and dirt can not be removed.
Wearing a dirty lens can cause severe eye damage.

What you need to know

How to read the lens data
When buying a color control, do you know that there are numerical values necessary for lens selection in addition to lens color and design?
BC, DIA, moisture content ... These numbers represent the specifications of the lens.
In choosing a color control, it is important to use not only design but also products of specs that match your own eyes.
Risk of color contact
Color contact lenses are thicker than transparent contact lenses and are not suitable for wearing for a long time because oxygen permeability is low.
In addition, many colored dyes contain metals, so allergies may occur.
Many people who use color contacts seem to be [Degree None] so it is a case not to see an ophthalmologist before purchasing.
Ophthalmology clinics prescribe lenses that can be used not only with degrees (vision correction power) but also with appropriate numerical values of BC · DIA, allergies, amount of tears etc. after wearing contacts in general.

It is caused by erroneous use · care
An example of ocular disorder

Corneal vessel invasion
The cornea (the part with the black eyes) is a tissue which is originally transparent and has no blood vessel. However, when the cornea becomes chronic oxygen deficiency by the use of a contact lens, the cornea gets oxygen, so blood vessels invade from the peripheral conjunctiva and extend toward the center of the cornea.
Papillary conjunctivitis
It is an ocular disorder that can be found on the conjunctiva (behind the eyelids) due to lens contamination.
Itching and eye spots increase, making the lens easier to slide.
Infectious keratitis
It is a lesion which causes inflammation by infection with bacteria, fungi, Acanthamoeba etc. when the cornea is scratched.
Symptoms such as pain and eye galling roughness hyperemia hyperemia tears come out Eyelids swollen Eyebrows white whitening may cause corneal ulceration if left unattended.
Corneal ulcer
It is a corneal lesion caused by bacteria and molds when the cornea is scratched or the resistance decreases.
As a symptom, grayish white turbidity (ulcer) occurs in the cornea, and vision deterioration · hyperemia · hyperemia · pain, etc. occur, and as it progresses, the ulcer increases and there is a danger of blindness.
  • The stated one is only an example of ocular disorder.
  • Take correct care and use, and protect yourself from eye disorders.

What you should never do

Wearing a lens past the expiration date
The lens use deadline after opening is the same as when the lens is used for a certain period (2 weeks / 1 month / 1 year etc.) and it is determined after inspecting that the lens quality is preserved I will.
Since it is still usable and used past the expiration date, there is a danger that unexpected trouble / abnormality will occur, so please be sure to replace it within the expiration date.
Wearing abnormal lens
Do not wear lenses that are damaged (scratches or dirt).
Please stop wearing the lens when you feel abnormalities such as pain or poor visibility at wearing.
Sleeps wearing lens
"All day wearing" lenses can not be worn continuously. When sleeping (including a nap) please be sure to remove the lens.
When sleeping, the movement such as blinking decreases and the lens does not move, so oxygen is hard to reach the eyes more than when it is awake.
Also, since the amount of tears also decreases, the lens thirstens and sticks to the eyes.
  • If you fall asleep while wearing lenses, forcibly peeling the lens will damage the cornea and it is dangerous.
  • In that case, please fully moisten eye and lens with eye drops, artificial tears etc. that can be used when wearing contacts, please slowly remove the lens after checking that the lens moves on the eye.
Lending and borrowing of lens
Lending and borrowing of lenses used by others can cause ophthalmic infections through lenses.
There are also things that can not be eliminated by eye care due to eye diseases, so please never wear the lenses used by others regardless of care.
Overlay contact lenses
It is very dangerous to wear a transparent contact lens for visual acuity correction and a no-time color contact lens in order to use Color contact lens with no need for vision correction.
  • By overlapping the two lenses, correct vision correction is not performed, which causes poor visibility.
  • By overlapping two sheets, the lens becomes thick, the oxygen permeability further decreases, and oxygen necessary for the eye is not supplied.
  • The shape of the lens changes, the lens will not fit in the correct position on the eye, causing a foreign body feeling and scratches on the eyes.
  • Peeling off the two lenses stuck may cause damage to the lens.