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BVetMed4 - Optho > The Wet Eye > Flashcards

The Wet Eye Flashcards

1
Q

What is epiphora?

A

Ocular discharge

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2
Q

What are the two broad categories of epiphora causes?

A

Increased tearing

Drainage problems

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3
Q

What nerve innervates the cornea?

A

CNV

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4
Q

What causes increased tearing?

A

CNV irritation

- anything that irritates cornea e.g. ulcer, FB

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5
Q

What can cause drainage problems?

A

Cherry eye
Eyelid abnormality - en/ectropion
Blockage of the nasolacrimal system

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6
Q

Name some of the causes of corneal irritation

A 
Districhiasis 
Trichiasis
Ectopic cilia 
FB
Corneal ulceration

Lymphoplasmocytic infiltrate of cornea or 3rd eyelid
Mass
Entropion

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7
Q

What is districhiasis?

A

Hair growing from abnormal place e.g. MEIBOMIAN gland

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8
Q

What is trichiasis?

A

Hair in normal place irritating the eye e.g. prominent nasal folds

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9
Q

What are ectopic cilia?

How are they different from what occurs in distichiasis?

How do they present?

A

Hair grows from meibomian gland

Emerge on the INSIDE of the eyelid on the conjunctival surface

DORSAL elliptical corneal ulcer

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10
Q

Where can FBs be found?

A

Conjunctival sac and behind third eyelid

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11
Q

How does cherry eye cause epiphora?

A

Displaces lower eyelid preventing drainage through the lacrimal punctum

Also irritates cornea

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12
Q

What is Pannus?

A

An abnormal layer of fibrovascular/granulation tissue formation

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13
Q

What is pannus in the eye also referred to as?

A

Chronic superficial keratitis

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14
Q

What causes lymphoplasmocytic infiltration of the cornea?

What can be seen?

A

Autoimmune attack of cornea

Pigment deposition, BVs growing into cornea
Pannus

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15
Q

What do you call LPI of the nicitating membrane?

What other CS?

A

Plasmoma

Areas of the third eyelid DEPIGMENTED

Appears raised and margin can be irregular

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16
Q

How likely is an eyelid mass to metastasise?

A

Most are benign

17
Q

Why should you remove an eyelid mass?

A

Irritates cornea

18
Q

What is macroblepharon?

A

Eyelid too big

Can see a lot of sclera

19
Q

What is entropion?

A

Eyelid rolls inwards and hair touches cornea

20
Q

How should entropion in puppies be managed?

A

Tacking sutures temp measure

TOO YOUNG to undergo definitive surgery

21
Q

What can cause entropion?

A

Extreme conformations

Elderly - lax tissues and reduced retro-orbital fat

Secondary to Blepharospasm - spastic entropion

22
Q

How can you differentiate between primary and secondary entropion ?

A

Local anaesthetic

23
Q

How can you diagnose nasolacrimal blockage?

A

Jones test

24
Q

What clinical signs are associated with nasolacrimal blockage?

A

Unilateral Chronic discharge

25
Q

What can cause a nasolacrimal blockage?

A

FB
Idiopathic - unidentified debris
Retrobulbar mass - blocks lacrimal puncta
Invasive intranasal mass - blocks duct

BVetMed4 - Optho (8 decks)

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