Eyelid Malpositions Flashcards
Dermatochalasis
- What is it
- Cause
Lax and redundant upper eyelid skin
Degeneration of connective tissue most commonly the result of aging.
Dermatochalasis
Demographics
Laterality
Elderly
Bilateral
Dermatochalasis
Symptoms
Signs
Asymptomatic, droopy eyelid, obstruction of superior visual field.
Upper eyelid skin laxity and redundancy
Decreased MRD 1 (Marginal reflex distance. Between K reflex and UL margin. 4-4.5 is normal)
Dermatochalasis
Management
None if asymptomatic.
If symptoms, refer out for blepharoplasty. Prior, perform a VF with lids taped vs untaped.
Ptosis
- What is it
- Cause
Droopy upper eyelid
Most commonly aponeurotic (levator stretching or dehiscence due to aging/repetitive eye rubbing)
Less commonly
Mechanical (eyelid tumor)
Myogenic (muscular dystrophy)
Neurologic (Horner, myasthenia gravis, MS)
Ptosis
- Demographics
- laterality
Depends on cause
Unilateral more common
Ptosis
Symptoms
Signs
No symptoms, droopy eyelid, obstruction of superior VF.
Signs- UL most commonly affected. Decreased MRD1 and maybe 2. Signs of underlying cause could be chalazion, EOM restriction, anisocoria, diplopia, high/absent eyelid create if aponeurotic.
Ptosis
Management
Determine and treat the underlying condition.
If no resolution, refer out for surgery
Pseudoptosis
Dermatochalasis, brow ptosis, enopthalmos, micropthalmia, corneal protective mechanisms, contralateral eyelid retraction.
Entropion
- What is it
- cause
Eyelid turns in towards globe
Most commonly age related
Less commonly: Cicatricial (Conj scarring in trauma, burn injury, trachoma), spastic, congenial
Entropion
Demographics
Laterality
Most commonly presents in the elderly
Unilateral or bilateral
Entropion
symptoms
Signs
Symptoms- Asymptomatic, ocular redness, ocular irritation, tearing.
sings- inversion of eyelid. May have underlying cause- conj scarring, spastic contraction of OO muscle.
Entropion
Complications
Trichiasis –> Ocular surface damage.
Conj injection, SPK, pannus, K ulcer
Entropion
Management
Determine and treat underlying condition. If no resolution, refer out for surgery.
Supportive management for trichiasis- lash epilation, aggressive topical lubrication, bandage CL.
Ectropion
- What is it
- Cause
Eyelid turns out away from globe
Most commonly age related due to horizontal eyelid laxity.
Less commonly due to mechanical (eyelid tumor), cicatricial, neurologic, congenital.