Power point presentation for medical student Made by A house Jobian

1. Dry Eye

2. Dry Eye
Occurs when
Inadequate tear production
Inadequate function
Results in Unstable Tear Film and
Ocular Surface Disorder.

3. Tear Production
Secreted by the
lacrimal glands
Spreads over the
ocular surface
Drained the lacrimal
canaliculi into the
nasolacrimal duct

4. Tear Film
 Lipid Layer
(meibomian glands)
 Aqueous Layer
(lacrimal gland)
 Mucus Layer
(goblet cells)

5. Functions
Anterior corneal surface smooth & regular
for refraction
Prevents the drying of cornea & maintain
the transparency of cornea
Supply oxygen
Medium for removal of debris & noxious
irritants
Lubricates the cornea eye lid interface

6. KERATOCONJUNCTIVITIS SICCA
Aqueous tear production is
insufficient to maintain normal
tear film

7. Causes
Pure KCS
Lacrimal Glands alone are involved
Primary Sjogren syndrome
KCS associated with dry mouth

8. Secondary Sjogren syndrome
oTrauma
oInfection
oInflammation
oHypersensitivity
oAutoimmune
oTumours

9. Clinical Features
Irritation
Burning
FB sensation
Mucus discharge
Blurring of vision
Pain

10. Work Up
History
Examination
Decrease marginal tear strip
Mucus strands & debris in
the Conjuctiva
Punctate epithelial erosion
corneal filaments

11. Investigations
Tear Film
breakup time
Rose bengal
staing
Shimmer test

12. Treatment
 Tear substitutes
 Mucolytic agents
 Topical retinoides

13. “I did then what I knew how to
do.Now that I know better I do
better”