Week 5 - Contact Lens Solution Flashcards
What are the advantages to Hydrogen Peroxide Systems? 4
- No preservatives
- Efficient
- Enhances cleaning
- Prolongs lens life
What are the disadvantages to Hydrogen Peroxide Systems? 3
- Takes time to be neutralized
- Compliance
- Need to use MPS (multi purpose solutions) also for
intermittent wearers
What is the primary functions of soft multipurpose solutions? 4
- Rinse
- Disinfect
- Clean
- Store
All Soft Multipurpose solutions are ‘rub’ solutions and contain preservatives.
What lenses are they used on only?
Reusable lenses - lenses must be rubbed to cleaned properly
What is a common hydrogen peroxide brand for soft contact lenses?
clear care/ clear care plus
What type of solution are the following:
-Biotrue/Biotrue
Advance,
-Opti-free Pure moist,
-Solocare,
-Menicare Soft
multi purpose soutions (MPS) for soft contact lenses
What are common extra strength cleaner brand for soft contact lenses? 2
-B&L Daily cleaner for soft lens,
-Miraflow(LensFresh) (alcohol based)
What is a common 2-step system brand for hard contact lenses?
Boston Advance Cleaner with conditioning fluid
What is a common multipurpose solutions brand for hard contact lenses?
Boston Simplus
What are common extra strength cleaner brand for hard contact lenses? 2
-X-Stat II,
-Miraflow(LensFresh)
How long can you leave contact lenses in a hydrogen peroxide before rewearing?
up to 7 days - if longer reclean and let sit for 6 hrs before wearing
What are common protein remover brand for hard contact lenses? 2
-Boston one step,
-Menicon Progent Cleaner
How long does it take hydrogen peroxide to neutralize, therefore okay to wear?
6 hrs
What can happen to a contact lens case if we dont replace it often enough?
Biofilm will form on the case which reduces the effect of the disenfectant (hydorgen peroxide etc)
What is a the MAIN/MAJOR advantage of hydrogen peroxide contact lens cleaning systems?
they are preservative free
Why are hydrogen peroxide systems suitable for patients with sensitive eyes?
they are preservative free so less chance of allergic reactions
What is a significant disadvantage to using hydrogen peroxide systems?
They require six hours to disinfect the lenses
Saline solution is NOT a lens disinfectant, it is used only as a rinsing solution for GP and SOFT lenses. T/F
Is saline solution available in preserved and preservative free options?
TRUE
YES
Not all eye drops are made the same.
What common rewetting solutions are there? 5
-Blink Contacts,
-Refresh Relieva,
-Systane Ultra,
-Systane Ultra Hydration Preservative Free,
-Hylo
We should not reccommend vasoconstrictors like Visine, NavconA, Lumify.
Why?
extended use of this products can cause pathological issues
What are 6 general ingredients in a contact lens solution?
Buffers
Preservatives
Cleaning agent
Tonicity agents
Viscosity Agents
Wetting Agents
What is the purpose of buffers in a CL solution?
keep PH of the solution close to natural tears
Examples: borate, phosphate, nitrate
What is the purpose of a preservatives in a CL solution? 2
-restricts the growth of microorganisms
-solution sterility in bottle ex. Isopropyl
What are cleaning agents also known as and what can they be added to? 2
– known as a surfactant cleaner
– this can be added
to MPS or can be a stand alone agent
What is the purpose of tonicity agents in a CL solution?
adjust the salt concentration to ensure compatibility with tears
What is the purpose of viscosity agents in a CL solution?
improves the wetting time and comfort of the solution
What is the purpose of wetting agents in a CL solution?
helps the solution spread across the lens surface
What are the 2 main reasons we clean a lens before setting it to disinfect?
-to get rid of debris that can adhere to the lenses and cause problems
-cleaning first enhances/ improves effectiveness of the disinfection process
What happens if the lenses are left dry? 2
-the lens becomes warped
-the BOZR will become too steep
After rubbing the lenses how long should you rinse the lenses for when cleaning with a multipurpose solution?
5 seconds
How long do you rub the lenses on both side for with a multipurpose solution?
20 seconds
How long do CLs need to sit in a multi purpose solutions to disinfect for?
4 hours
