15.4 KHURANA EYELASH DISORDERS, LID MARGINS POSITION Flashcards
It refers to inward misdirection of cilia (which rub against the eyeball) with normal position of the lid margin
- TRICHIASIS
- DISTICHIASIS
- MADAROSIS
TRICHIASIS
partial or complete loss of eyelashes.
- TRICHIASIS
- DISTICHIASIS
- MADAROSIS
MADAROSIS
is a rare anomaly in which an extra row of cilia occupies the position of Meibomian glands which open into their follicles as ordinary sebaceous glands.
- Congenital distichiasis
- Acquired distichiasis
Congenital distichiasis
(metaplastic lashes) occurs when due to metaplasia and differentiation, the meibomian glands are transformed into hair follicles.
- Congenital distichiasis
- Acquired distichiasis
Acquired distichiasis
extra row of cilia
- TRICHIASIS
- DISTICHIASIS
- MADAROSIS
DISTICHIASIS
Seen more commonly in lower than upper eyelid.
- Congenital entropion
- Cicatricial entropion
Congenital entropion
It is a common variety usually involving the upper lid.
- Congenital entropion
- Cicatricial entropion
Cicatricial entropion
is usually secondary to mechanical effects of microphthalmos.
- Upper eyelid congenital entropion
- Lower eyelid congenital entropion
Upper eyelid congenital entropion
is caused by improper development of the lower lid retractors
- Upper eyelid congenital entropion
- Lower eyelid congenital entropion
Lower eyelid congenital entropion
It is common occurrence and affects only the lower lid in elder people
- Senile (involutional) entropion
- Mechanical entropion.
Senile (involutional) entropion
It occurs due to lack of support provided by the globe to the lids.
- Senile (involutional) entropion
- Mechanical entropion.
Mechanical entropion
due to weakening of orbicularis muscle
- Horizontal laxity of the lid
- Vertical lid instability
Horizontal laxity of the lid
due to weakening or dehiscence of capsulopalpebral fascia (lower lid retractor)
- Horizontal laxity of the lid
- Vertical lid instability
Vertical lid instability
MATCH THE FF:
- includes inturning up to the inter-marginal strip
- in which the whole lid margin including the anterior border is inturned
- only the posterior lid border is inrolled
a. Grade I entropion
b. Grade II entropion
c. Grade III entropion
- b. Grade II entropion
- c. Grade III entropion
- a. Grade I entropion
may resolve with time without need of any intervention or may require excision of a strip of skin and muscle with plastic reconstruction of the lid crease (Hotz procedure)
- Congenital Entropion
- Cicatricial Entropion
Congenital Entropion
It is treated by a plastic operation, which is based on any of the following basic principles:
• Altering the direction of lashes, or
• Transplanting the lashes, or
• Straightening the distorted tarsus.
- Congenital Entropion
- Cicatricial Entropion
Cicatricial Entropion
It is the simplest operation employed to correct mild degree of entropion.
- Anterior lamellar resection
- Tarsal wedge resection
Anterior lamellar resection
It corrects moderate degree of entropion associated with atrophic tarsus. In this operation, in addition to the elliptical resection of skin
- Anterior lamellar resection
- Tarsal wedge resection
Tarsal wedge resection
This is indicated to treat mild to moderate amount of cicatricial entropion. It basically involves tarsal fracture and eversion of distal tarsus.
- Transposition of tarsoconjunctival wedge
- Posterior lamellar graft
Transposition of tarsoconjunctival wedge