H10.1
DESCRIPTION
An inflammatory condition of the conjunctivae caused by allergy to pollen, grass, animal fur, medication, cosmetics, etc. Often associated with allergic rhinitis or hay fever. Common features include:
- itching, watery eyes and photophobia
- slightly red or normal conjunctiva
- conjunctival swelling in severe cases
- normal cornea, iris and pupil
- normal visual acuity
In chronic cases, there may be brown discolouration of the conjunctivae or cobblestone elevations of the upper tarsal conjunctivae (vernal conjunctivitis).
GENERAL MEASURES
Relieve symptoms with cold compresses, i.e. a clean moistened cloth over the eyes for 10 minutes.
MEDICINE TREATMENT
Adults and children > 6 years of age
- Oxymetazoline 0.025%, eye drops, instil 1–2 drops 6 hourly for a maximum of 7 days.
If no response within 7 days or history of recurrent (seasonal)/chronic allergic conjunctivitis, change to:
- Anti-allergic eye drops, e.g.:
- Sodium cromoglycate, 2 % eye drops, instil 1 drop 6 hourly (Doctor initiated).
- Use may be seasonal (1–3 months) or long-term.
If symptoms not controlled, add cetirizine/chlorphenamine:
- Cetirizine, oral, 10 mg once daily.
- Use may be seasonal (1–3 months) or long-term.
Children: 2–6 years of age
- Chlorphenamine, oral, 0.1 mg/kg/dose 6–8 hourly. See Paediatric dosing tool.
If no response within 7 days or history of recurrent (seasonal)/chronic allergic conjunctivitis, change to:
- Anti-allergic eye drops, e.g.:
- Sodium cromoglycate, 2 % eye drops, instil 1 drop 6 hourly (Doctor initiated).
- Use may be seasonal (1–3 months) or long-term.
If symptoms not controlled, add cetirizine:
- Cetirizine, oral, 5 mg once daily. See Paediatric dosing tool.
- Use may be seasonal (1–3 months) or long-term.
CAUTION
Do not give an antihistamine to children < 2 years of age.
REFERRAL
- No response to treatment.
- Persons wearing contact lenses.
- Children < 2 years of age.