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The information included in this page is intended to be a helpful guide to wearers of all types of contact lenses.
Whether you wear soft (Hydrophilic), RGP (Rigid Gas Permeable), hard, disposable, extended-wear, or daily-wear lenses, most
 of this information will apply to you.
No advertisement or recommendation is contemplated by this information.


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Cleaning solutions :
Remove dirt, mucus, and debris that get on the contact lens during normal use.
Disinfecting solutions :
Kill (destroy) bacteria (germs) on the contact lens. Disinfecting is necessary to help prevent eye infections.
Here are some ways of disinfect your contact lenses :
Heat (Thermal) system is effective for killing bacteria but requires a heat unit
Chemical system is adequate to kill bacteria but beware of allergic reaction to preservatives in solution
Hydrogen peroxide (oxidation) system is effective but can be expensive requiring neutralizer solutions
Rinsing solutions :
Remove other solutions from the contact lens. They also prepare the contact lens for insertion.
Enzyme tables or solution :
Remove protein and other deposits that build up on the surface of the contact lens over time.
Rewetting solutions :
Can be used to lubricate the contact lens while in use to alleviate dryness and make them more comfortable.

A most if you are using Extended Wear contact lenses.

[Solution packages] Solutions may become contaminated after opening.
Do not touch the tip of an open bottle.
Throw away opened solutions as recommended.
Do not use any solutions after their expiration date.

Some solutions may have more than one function, which will be indicate on the label.
Read the label or instructions on the bottle.
Keep solution containers tightly closed and upright in a clean, dry, cool place when not in use.


So I been wearing hard lenses for many years and I don't use any solutions.
You better remember the last time you had contact lenses made. If it is less than three years, ask your eye care professional, you may be wearing Gas Permeable material and you need a Wetting Solution or a Conditioning Solution to use with your contact lenses.
Eye care professional some times upgrade to better materials for more comfort and the lack of solution will make contact lenses foggy and hazy.
Don't go running to the store jet. Ask your eye care professional for the type of solution you need.

Sample of soft contact lens care solutions :


UV Disinfection

      [Ultrasonic and Heat Unit]

Use with Purilens saline solution daily.
This units can also clean ( ultrasonic )  contact lenses in a continuous step. 
Clean contact lenses every week with a cleaning solution and rinse with saline solution.
This method is effective and at long time inexpensive
This units are not available in regular or discount stores. You can purchase this units in your Contact Lens Specialist Office or can be ordered by internet in Purilens.com.

Cold

 [various Cold desinfection solutions]

Clean contact lenses daily with a cleaning solution and rinse with saline (if using an all purpose solution disregard the saline solution) before using disinfecting solution.
Leave contact lenses for 5 hours or more in disinfecting solution.
This method require more time and is more expensive but you can use any type of soft lens.
Do not use any type of disinfecting solution. Your
Contact Lens Specialist will have to recommend the correct disinfecting solution for your lenses.

Sample of rigid contact lens care solutions :


Gas Permeable

[ Gas Permeables solutions]

Use with wetting and cleaning solution daily.
Clean contact lenses daily with a cleaning solution after removal and rinse with water .
Store the lenses in the contact lens case.
Insert contact lenses with the wetting solution every time.
Your
Contact Lens Specialist will recommend the correct wetting solution suitable for your lenses.


One issues in contact lens fitting continues to be the yellow lens. One of the most significant problems, particularly with high water absorption lenses, is protein. Protein can be denatured on the lens simply by tear fluid drying on the lens between blink. Repeated drying of the lens between blinks can create a deposit and potentially a yellow lens.
Also, a melanic type polymer derived from the polymerization of aromatic compounds in tears con deposit on hydrophilic (Soft) lenses and cause yellow to brown discoloration.
Another serious problem causing a yellow lens is patient non-compliance. Several studies reported indicate that inadequate maintenance of the lenses is a primary cause of contact lens failure. Almost 50% of all problems are attributed to failure to property clean and/or disinfect the lenses".
Fingerprints from handling lenses with unwashed hands, use of unapproved peroxide (e.g., OTC peroxide) may have additives such as colorants or other substances, and eye drops and medications can have a deleterious effect on contact lenses. Some eye drops containing phenylephrine, adrenaline, or berberine can cause yellow lens. Topical ephinphrine and vasoconstrictors such as tetrahydrozaline con also yellow lenses. Also, pyridium, tetracyline, phenolphethalein, rifamicin and nitrofurantoin are drugs that when taken internally and excreted into tears may stain contact lenses.
Environmental conditions may also contribute to yellow lens. Various salts or trivalent ions (e.g., calcium), pollutants, chemical vapors, cosmetic ingredients, water impurities, nicotine, oils and dirt from handling, may be present in the lens. Several references indicate that smokers often have a much higher incidence of pigmented lenses.
The nature and complexity of the yellow lens leads to a need to systematically review each case individually and avoid generalizations.

Answers to the following questions will be helpful in analyzing the cause and correct your mistakes.

What type of lens material are you wearing

Low, medium, or high water contents (The Low the water the better)

Are you on any medication?

What chemical composition?

Do you use eye drops?

What chemical composition?

Is it a first time problem, first time wear?

Have you been a successful wearer before now?

What care procedures had you been following?

Wash hands before handling lenses? (You should)
Brand of solutions used?
Do you reuse the solutions? Particularly for storage and disinfection. (Bad idea)
Regular use of enzyme? (A most)

Do you smoke?
Do you wear make up?

During this analysis many potential reasons will emerge. Strict adherence to the prescribed regimen, including enzymatic cleaning, as needed, will result in only limited instances and much less yellow lens.
Because this is a lens, solutions, patient compliance matrix of variables, the best way to prevent yellow lens is to use clinically proven lens and solutions combinations.
Experimenting with unproven regimens significantly increases the risk.


For More Information Contact:
Lens Consultants, Inc.
FAX: (786) 289-0381
E-Mail to: info@lensconsultants.com


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