Download - PTERYGIUM-TRICHIASIS-DACRYOADENITIS
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PTERYGIUM
T SITI HARILZA ZUBAIDAH
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• TRIANGULAR FIBROVASCULARSUBEPITHELIAL INGROWTH OFDEGENERATIVE BULBAR
CONJUNCTIVA
• DEVELOP IN HOT CLIMATES,
CHRONIC DRYNESS AND UVEXPOSURE
• COMPLICATION : CHRONIC
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• CHRONOLOGICAL :
SMALL, GREY, CORNEAL OPACITY DEVELOPS NEAR
THE NASAL LIMBUS
CONJUNCTIVA OVERGROWS THE OPACITY ANDPROGRESSIVELY ENCROACHES ONTO THE
CORNEA IN A TRIANGULAR FASHION
A DEPOSIT OF IRON (STOCKER LINE) MAY BE SEEN
IN THE CORNEAL EPITHELIUM ANTERIOR TO THEADVANCING HEAD OF PTERYGIUM
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• TREATMENT : INDICATED COSMETIC REASONS
AND VISUAL → SIMPLE EXCISION (HR OF RECURRENCE)
CONJUNCTIVAL AUTOGRAFT
AMNIOTIC MEMBRANE
MITOMYCIN C (MINIMIZE RECURRENCE, MAY COMPLICATED BY LATE SCLERAL NECROSIS)
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• MAY OCCUR AS A RESULT OF SCARRING OF THE
LID MARGIN SECONDARY TO CHRONIC
BLEPHARITIS, HZO AND TRACHOMA
• SIGNS :
POSTERIOR MISDIRECTION OF LASHES ARISING
FROM NORMAL SITES OF ORIGIN
TRAUMA TO THE CORNEAL EPITHELIUM MAY
CAUSE PUNCTATE EPITHELIAL EROSIONS AND
OCULAR IRRITATION MADE WORSE ON
BLINKING
CORNEAL ULCERATION AND PANNUS FORMATION
• TRICHIASIS
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SURGERY FULLTHICKNESS :
WEDGES RESECTION OR ANTERIORLAMELLAR EXCISION → MAY BE
USEFUL FOR A LOCALIZED CROP OFLASHES RESISTANT TO OTHER
METHODS OF TREATMENT
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• LACRIMAL GLAND INVOLVEMENT OCCURS IN
ABOUT &'% OF PX WITH IOID (IDIOPATHIC
ORBITAL INFLAMMATORY DISEASE)
• MORE COMMONLY OCCURS IN ISOLATION,RESOLVES SPONTANEOUSLY → DOESNT
RE#UIRE TREATMENT
• CLINICAL FEATURES :
• ACUTE DISCOMFORT IN THE REGION OF
THE LACRIMAL GLAND
DACRYOADENITIS
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• SWELLING OF THE LATERAL ASPECT OF THE
EYELID → SSHAPED PTOSIS
CHARACTERISTIC
• TENDERNESS OVER THE LACRIMAL GLAND
FOSSA
• INJECTION OF THE PALPEBRA PORTION ON
THE LACRIMAL GLAND AND ADJACENT
CONJUNCTIVA
• LACRIMAL SECRETION MAY BE REDUCED
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• DIFFERENTIAL DIAGNOSE :
• LACRIMAL GLAND INFECTION → CAUSED BY
MUMPS, MONONUCLEOSIS AND LESS COMMONLYBACTERIA
• RUPTURED DERMOID CYST → MAY CAUSED
LOCALIZED INFLAMMATION IN THE REGION ON THE LACRIMAL GLAND
• MALIGNANT LACRIMAL GLAND TUMOUR → MAYCAUSE PAIN BUT THE ONSET IS NOT ALWAYSUSUALLY ACUTE