Dry Eye - Clinical Features and Investigation (Within 3.00 Mins) 3/4
CLINICAL FEATURES:
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Symptoms:
• Feelings of dryness, grittiness and burning that characteristically
worsen over the course of the day
• Stringy discharge, transient blurring of vision, redness and crusting of
the lids are also common
• Sensitivity to light, Difficulty with nighttime driving
• FB sensation
• Watery eyes, which is the body's response to the irritation of dry eyes
• Lack of emotional or reflex tearing is unusual
SIGNS OF DRY EYE:
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1. In Eyelid:
o Posterior (seborrhoeic) blepharitis with meibomian gland dysfunction
is often present.
2. Conjunctiva:
o Redness.
o Staining with fluorescein and rose Bengal
o Keratinization.
o Conjunctivochalasis: non-edematous excess fold in the conjunctiva
3. In Tear film:
o In the normal eye, as the tear film breaks down the mucin layer
becomes contaminated with lipid but is washed away.
o In the dry eye, the lipid-contaminated mucin accumulates in the tear
film as particles and debris that move with each blink .
o The marginal tear meniscus (strip): In the normal eye the meniscus is
0.2-0.4 mm in height, but in dry eye becomes thin or absent
4. In Cornea:
o Punctate epithelial erosions that stain well with fluorescein.
o Filaments consist of strands of mucus and debris such as shed
epithelial cells; they stain well with rose Bengal but less so with
fluorescein.
o Mucous plaques: occur in severe dry eye. They consist of semi-
transparent, white-to-grey, often slightly elevated lesions of varying
size.
INVESTIGATION:
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• The aim of investigation is to confirm and quantify a clinical diagnosis
of dry eye.
• The tests measure the following parameters:
- Stability of the tear film as related to its break-up time (BUT).
- Tear production (Schirmer, fluorescein clearance and tear
osmolarity).
- Ocular surface disease (corneal stains and impression cytology).
• There is no clinical test to confirm the diagnosis of evaporative dry eye
• Diagnosis is based on the presence of associated clinical findings.
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Part-2: • Septum Method - Turvil...
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Пікірлер: 4
Very informative topic 🙏
@optometry-with-samir
3 жыл бұрын
Thank you, Team Smart Optometry
Informative and good presentation ❤
@optometry-with-samir
13 күн бұрын
@@anjanajishnu909 Stay with us for more..