Flashcards in Disorders of Lashes Deck (47)
The cilia pass between the ___ ___ and the muscle of _____ exiting the skin at the anterior lid margin and curve away from the globe.
oribularis oculi; Riolan
_____ is a condition that may occur in isolation or as a result of scarring of the lid margin secondary to chronic bepharitis and herpes zoster opthalmicus.
What is trichinoses characterized by
posterior misdirection of lashes arising from normal sites of origin.
How do you treat trichiasis
4. Argon laser ablation
____ with forceps is simple but recurrences within 4 weeks are inevitable. ____ is useful for a few isolated lashes but is tedious and may cause scarring and frequently multiple treatments are required to obtain a satisfactory result. ____ is effective in eliminating profuse lashes. Argon laser ablation is useful for a few scattered lashes. Surgery is useful for localized crop of lashes resistant to other methods of treatment
Epilation; Electrolysis; Cryotherapy
What is congenital distichiasis
Rare condition that occurs when a primary epithelial germ cell destined to differentiate into a specialized sebaceous gland of the tarsus develops into a complete pilosebaceous unit. Majority of pts also manifest primary lymphedema of the legs.
What are signs of congenital distichiasis
1. partial or complete second row of lashes emerging at/behind the the meibomian gland orifices.
2. Aberrant lashes tend to be thinner and shorter than normal cilia and are often directed posteriorly.
Treatment of the lower lid is with ____.
Acquired distichiases is caused by ____ and dedifferentiation of the _____ glands to become hair follicles. The most important cause is late stage cicatrizing _____ associated with chemical injury, Stevens johnson syndrome and ocular cicatricial pemphigoid.
metaplasia; meibomian; conjunctivitis.
what are signs of acquired distichiases
1. variable number of lashes which originate from meibomian gland orifices.
2. cilia are non pigmented and stunted and symptomatic.
what is eye lash ptosis associated with
floppy eyelid syndrome, dermatochalasis with anterior lamellar slip or long standing facial palsy.
_____ refers to excessive eyelash growth
List the acquired causes of trichomegaly
1. drug induced - topical prostaglandin analogues phenytoin and cyclosporin
What are congenital causes of trichomegaly
1. Oliver McFarlane syndrome: pigmentary retinopathy, dwarfism and mental handicap
2. Cornelia de Lange syndrome: mental and physical developmental abnormalities
3. Goldsten Hutt syndrome: cataract and hereidtary spherocystosis
4. Hermansky Pudlak syndrome: albinism and bleeding diathesis.
_____ is a decrease in the number of lashes
what are local causes of madarosis
1. chronic anterior lid margin disease
2. infiltrating lid tumors
4. radiotherapy/cyrotherapy of lid tumors
which skin disorders cause madarosis
1. generalized alopecia
which systemic diseases cause madarosis
2. systemic lupus erythematosus
3. acquired syphillis
4. lepromatous leprosy
which are cases in following removal that cause madarosis
1. iatrogenic for trichiasis
2. trichotillomania- psychiatric disorder of hair removal.
_____ is a premature localized whitening of hair, which may involve the lashes and eyebrows.
what are ocular causes of poliosis
1. chronic anterior blepharitis
2. sympathetic opthalmitis
3. idiopathic uveitis
what are systemic causes of poliosis
1. vogt koyanagi harada syndrome
2. waardenburg syndrome
4. marfan syndrome
5. tuberous sclerosis
acute allergic oedema is usually caused by ____ or by insect bites
what are signs of oedema
sudden onset of bilateral pitting periorbital oedema, accompanied by conjunctival swelling (chemosis).
contact dermatitis is an inflammatory response that usually follows exposure to a medication, presevarvites, cosmetics or metals. Reaction is mediated by delayed type ____ hypersensitivity response
Atopic dermatitis is a common idiopathic condition, associated with _____ and hay fever.
What are signs of atopic dermatitis
thickening, crusting and vertical fissuring of the lids associated with staphylococcal blepharitis and madarosis.
How do you treat atopic dermatitis
emollients to hydrate the skin and use mild topical steroids such as hydrocortisone .
what are common ocular associations of atopic dermatitis
1. vernal disease in children and chronic keratoconjunctitivis in adults.