Benign eyelid disorders Flashcards
What is the name given to an external stye?
hordeolum externum
What is the name given to an internal stye?
hordeolum internum
What is an external hordeolum caused by?
a staphylococcal infection of an eyelash follicle.
What is a internal hordeolum caused by?
infection of a meibomian gland
What two glands form external styes when infected?
1) Glands of Moll
2) Glands of Zeis
What are the glands of Moll?
Sweat glands found at the base of the eyelashes
What are the glands of Zeis?
sebaceous glands found at the base of the eyelashes
Describe how a stye presents:
tender, red lump which may contain pus
Give 3 associated symptoms for styes:
1) eyelid swelling
2) yellow discharge
3) eyelid crusting
Give 3 risk factors for styes:
- Rubbing the eye
- Rosacea
- Blepharitis
Which tender to be more painful, hordeolum externum or internum?
hordeolum internum (as the stye pushes on the eyeball)
Give 2 symptomatic treatments for styes:
1) hot compress
2) analgesia
What topical antibiotic is used for persistent styes?
chloramphenicol
What is a chalazion?
an infection of the meibomian gland which becomes blocked and swollen
Describe the presentation of a chalazion:
red, non-tender lump along the eyelid which may contain pus
What two conditions are chalazion associated with?
- Blepharitis
- Acne rosacea
Give two ways in which chalazions are treated:
1) warm compress
2) gentle massage towards the eye lashes to encourage drainage
What is the name given to the condition where the eyelid turns inwards?
entropian
What is the name given to the condition where the eyelid turns outwards?
ectropion
Give a key manifestation caused by eyelashes pressing against the eye in entropion?
corneal ulceration and risking sight loss
Give two causes of entropion:
1) Trachoma infection
2) weakness of eyelid muscles (age-related degenerative changes)
Give 3 treatments used for entropion:
1) taping the eyelid down
2) lubricating eye drops
3) surgery (for definitive management)
How does an ectropion present?
- Sore red eye
- often watery due to disrupted tear drainage
what type of nerve lesion can cause ectropion?
Facial nerve palsy
What is a key manifestation of ectropion?
exposure keratopathy
What is exposure keratopathy?
damage to the cornea due to ocular dryness caused by inadequate lid closure
Give 2 treatments used for ectropion:
1) lubricating eye drops
2) surgery
What is trichiasis?
inward growth of eyelashes
What are 2 complications of trichiasis?
- Corneal ulceration
- Sight loss
What are most cases of trichiasis caused by?
Chronic blepharitis
What is the standard treatment for trichiasis?
removing the eye lashes (in recurrent cases, laser treatment of eyelashes)