Clinic: CL complications and aftercare Flashcards
List 7 possible causes of CL discomfort
CL properties Patient factors (hygiene) Medications Compliance Ocular surface condition External environment Occupational factors
List 6 management options for CL discomfort
CL exchange CL modality change (change wearing schedule) Patient education (e.g. hygiene) Lubrication Tx of any ocular or systemic disease Environment modification
List 6 risk factors for post CL corneal neovascularisation
High myopia High astigmatism Improper contact lens alignment HSV Post-keratoplasty
List 4 management options for CL corneal neovascularisation
CL exchange (re fit to higher dk/t lens if hydrogel EW)
CL modality change
Anti-angiogenic therapy
Laser photocoagulation
What are SEALs?
Superior Epithelial Arcuate Lesions - full thickness lesions with split/jagged edges appearing usually around 1mm from superior limbus
In what contact lens modality can SEALS typically occur? Why?
EW Si-Hy - usually due to stiff nature of Si-Hy material.
List 7 risk factors for SEALs
CL properties Male gender Presbyopia Tight upper lid Steep cornea Corneal abrasion EW Si-Hy lenses
List 2 management options for SEALs
CL exchange
CL removal
What is CLPU?
Contact Lens Peripheral Ulcer - variant of infiltrative keratitis specifically associated with lens wear
Describe the clinical features of a CLPU
Circular, well-circumscribed focal infiltrate (anterior stroma) <2mm, involving loss of overlying epithelium
How likely are recurrences of CLPU?
likely
List 2 risk factors for CLPU
EW Si-Hy lenses
Corneal abrasion
List 2 management options for CLPU
Discontinuation of CL
Consider replacing EW CL with DD (daily disposable)
NSAIDs
List 4 risk factors for bacterial keratitis in CL wearers
Hypoxia
Microtrauma
Contamination (poor hygiene? etc)
Extended Wear
How do you manage CL associated bacterial keratitis? (3)
Empirical monotherapy with fluoroquinolones (e.g. ciprofloxacin)
CL removal
swab and culture
List 2 risk factors for Acanthamoeba in CL patients
Multi-purpose solution poor compliance
Tap water use
How do you manage CL associated acanthamoeba keratitis?
Initially treat as bacterial/normal CL keratitis
2 day review? (1-2 days if central) if no improvement:
Same day referral to opthalm/emergency centre
Telephone hospital to tell them what you have done
How do you manage HSV keratitis (5)
Acyclovir ung 5 x a day
Debridement and patching acyclovir also potential treatment
Do NOT use topical steroids in active HSV epithelial keratitis (However DO use it in stromal keratitis etc)
Manage IOP as needed
Comfort: (lubricants, cycloplegia)
Name one oral medication regime for HSV keratitis and HZV keratitis
HSV: Acylovir 400mg tablets 5/day for 1 week
HZV: Acylovir 800mg tablets 5/day for 1 week
Describe the clinical features of GPC
Hyperaemia and papillary reaction of upper tarsal conjunctiva in CL wearers
List 4 risk factors for GPC
Si-Hy lenses
EW lenses
Mechanical trauma
Allergy and atopy
List 3 management options for GPC (5)
Transient removal of CLs
CL exchange (once healed)
Consider changing modality to DDs
Topical AH/MCS: Patanol BiD or Zatiden BiD for several months
if that doesn’t work:
FML iBD-iQD in short term for more severe cases
List 4 risk factors for dry eye in CL patients
Hydrogel lens
Lower refractive index
Female
Increased daily wearing time