SCL care

Question 1

Challenges for CL solution

Answer 1

subjected to testing to protect against organisms

Question 2

Properties solutions must have

Answer 2

• sterile + stable
• harmless to eye
• compliance with other solutions
• no adverse effect on material
• self sterilising

Question 3

Steps to cleaning

Answer 3

1. clean
2. rinsing
3. disinfecting + storage

Question 4

Purpose & mechanism of cleaning

Answer 4

• reduces deposits
• including lens rub = mechanical removal
• hydrophobic ends cluster round debris to form micelles
• hydrophilic ends react to water & micelle whisked off lens
• effective against lipid + inorganic
• enhance wettability

Question 5

Multi purpose solution steps

Answer 5

• convenient + most common
• anti fungal properties

STEPS:
- 3 drops of solution
- rinse each side
- place lens in case + fill with fresh solution
- let case dry
- replace monthly

Question 6

Hydrogen peroxide CL system + steps

Answer 6

• very different to MPS
• broad anti microbial activity
• destroys pathogen by oxidisation by protein desaturation
• preservative free
• requires catalyst to neutralise

STEPS:
- rinse hands
- remove lens + put in case
- rinse each lens in holder
- fill lens case
- place in a lens holder
- allow lens to soak for 6 hours

Question 7

Allergies of CL solution

Answer 7

• similar to ocular allergies
• usually due to solution

Question 8

Use of rewetting drops

Answer 8

• often used by px
• gives temporary relief
• drain ocular surface quickly

Question 9

Deposits composition + risks

Answer 9

protein/lipids/mucing/polysaccharids can build up
- common when lenses not replaced
- increase + reduce comfort
- reduced VA
- increased infection risk

Question 10

Mistakes in SCL care

Answer 10

• not rubbing lenses
• not changing CL case
• using wrong solution
• topping up CL solution
• no hand washing
• tap water
• expired solutions

Question 11

What px are hydrogen peroxide good for

Answer 11

• prone to allergies
• preservative allegies