TRICHIASIS
Trichiasis is a condition where the eyelashes are misdirected backwards rubbing against the cornea. A few eyelashes or whole lid margin may be involved.
Etiology
- Entropion due to cicatrization in stage IV of trachoma is a common cause.
- Spastic entropion in old persons or due to tight bandaging may cause trichiasis.
- Blepharitis specially the ulcerative form may result in trichiasis.
- It may occur after recurrent sty.
- Scars of the lid following burn, injury or operation may cause trichiasis.
Symptoms
- There is foreign body sensation and photophobia due to corneal involvement.
- Irritation, pain and lacrimation are very troublesome.
- Conjunctival congestion is present usually.
Signs
- Reflex blepharospasm and photophobia are seen in cases of corneal involvement.
- Superficial corneal opacities are often present.
- Ciliary congestion is often associated.
Complications
Recurrent erosion and corneal ulcer are common complications.
Treatment
- Isolated cilia
- I. Epilation or removal of misdirected eyelash is repeated every few weeks.
- II. Electrolysis—It is preferable as it causes destruction of hair follicle by a current of 3-5 mA for 10 seconds. It may be repeated every few months.
- Whole lid margin involvement—Operative procedures as for entropion are employed.