Chapter 11 and 12: Eye, ENT COPY Flashcards
When two different eye drop preparations are used at the same time of the day, what time interval should be left between administration of the two eye preparations?
With what preparations would a longer interval be required?
5 minutes between the two
The interval should be extended when eye drops with a prolonged contact time, such as gels and suspensions, are used
If a patient needs eye drops and eye ointment at the same time of the day, what should be applied first?
Eye drops then eye ointments
When a patient is applying eye drops, what can be done after to reduce naslacrimal drainage (and therefore systemic absorption)?
Pressure on the lacrimal punctum for at least a minute
What is a rare side effect of using phosphate-containing eye drops in patients with damaged corneas?
Corneal calcification
What is the expiry date for multiple application eye drops after opening at home?
4 weeks
Are preservative or preservative free eye drops preferred in soft contact lens patients?
Preservative free
Some drugs and preservatives in eye preparations can accumulate in hydrogel soft lenses and may induce toxic and adverse reactions.
Ideally, patients should not wear contact lenses during treatment period
Can eye drops be used in patients wearing rigid corneal contact lenses?
Yes
Can eye ointments be applied at the same time as contact lenses?
No
Patient should not use contact lenses if being treated via eye ointment
How does aspirin interact with contact lenses?
Salicylic acid appears in tears and can be absorbed by contact lenses—leading to irritation
What eye side effect can be caused by isotretinoin?
Conjunctival inflammation
What are the 3 main dangers associated with corticosteroid eye drops?
- A red eye- corticosteroids may aggrevate herpes simplex virus leading to corneal ulceration
- Steroid glaucoma
- Steroid cataract
When are combination corticosteroid + anti-infective drug eye drops used?
Sometimes used after ocular surgery to reduce inflammation and prevent infection
Only under specialist supervision, not routinely used
Does atropine eye drops result in pupil constriction or pupil dilation?
Pupil dilation, otherwise known as mydriasis
Are lighter or darker pigmented eyes more resistant to pupil dilation with atropine?
Darker pigmented eyes are more resistant
What is Sjögren’s syndrome?
Disorder of your immune system identified by its two most common symptoms — dry eyes and a dry mouth
Usually accompanies lupus, rheumatoid arthritis, and other immune system disorders
What is the traditional choice of treatment for tear deficiency?
How often can you apply this?
Hypromellose
Can apply frequently e.g. hourly
If a patient is finding it troublesome applying hypromellose eye drops hourly for dry eyes, what can be an alternative that requires reduced application frequency?
Carbomers cling to the eye surface may help reduce frequency of application to 4 times daily.
What is a side effect of chloramphenicol eye drops in babies?
Grey baby syndrome
What is the MHRA advice regarding the use of latanoprost eye drops Xalatan?
Increased reporting of eye irritation e.g. excessive watering since reformulation