Dry Eye In CLs

Question 1

Role of the tear film

Answer 1

• antibacterial
• optical performance of the eye
• transports nutrients
• successful cl wear

Question 2

Dry eye signs and symptoms

Answer 2

Symptoms
- grittiness
- photophobia
- FB sensation
- lacrimation
- itchiness
- blurred vision

Signs
- reduced TBUT
- hyperaemia
- possible Bleph
- cornea/conj staining
- reduced tear volume

Question 3

Causes of dry eye in CLs

Answer 3

• reduced blink efficiency
• material dehydration
• rule out poor fitting

Question 4

Effect of CLs on tear film

Answer 4

• destabilisation
• reduced tear break up time
• reduced tear film
• incomplete blink
• lid conformance
• tear stagnation

Question 5

Management in SCLs

Answer 5

Aim to reduce tear evaporation
- material
- lubrication
- water content
- wear schedule
- preservative free products
- refit with RGPs
- more frequent replacement

Question 6

Management RGPs

Answer 6

Minimise staining
- centration
- TD
- edge thickness
- avoid preservatives
- choose lens with wetting and lubrication incorporation

Question 7

Preventing dry eye in CLs

Answer 7

• identify borderline Px
• treating conditions in advance (bleph)
• tear supplements
• punctual plug
• lens replacement
• reduce cl wear time

Question 8

Dry eye prognosis and risks

Answer 8

• increased risk of infection
• photophobia
• reduced wear time