Make a infographic exam answer by this picture for cataract with diagr

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Make a infographic exam answer by this picture for cataract with diagram in picture

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A professional veterinary pathology exam infographic titled "CATARACT - Pathology of the Lens" with a dark navy blue background and organized sections. Top header: "CATARACT" in large bold gold text, subtitle "Opacity of the Lens" in white. Small note: "Common in dogs, rare in other animals" Section 1 - DEFINITION box (teal): "Opacity of the lens" Section 2 - ETIOLOGY (two columns side by side): Left box labeled "CONGENITAL" (blue): - Failure of hyaloid artery to regress - Impaired lens translucence - Hereditary predisposition - Deficiency of Vitamin E Right box labeled "ACQUIRED" (orange): - Trauma / Luxation - Degenerative ocular disease - Senility (old stallions) - Diabetes mellitus (dogs) - Nutritional: Vit D, C, cysteine deficiency - Toxins / Ergot poisoning - Absorbed radiation Section 3 - PATHOGENESIS (purple box): Three arrows pointing down: 1. Proliferation of capsular epithelium 2. Necrosis of lens fibres 3. Increased sclerosis of nucleus fibres Section 4 - FOUR TYPES OF CATARACT (four color-coded boxes in a row): Box 1 RED "1. SUBCAPSULAR": Horses, dogs, birds. Proliferation of lens epithelium under capsule. Anterior polar (front) + Posterior polar (back). Disorganized proliferation → opacity Box 2 GREEN "2. CORTICAL": Most common. Lens fibres affected. Follows corneal ulcer. Stellate opacity center to periphery. Progressive. Box 3 BLUE "3. LAMELLAR/ZONULAR": Young animals. Congenital or acquired. After distemper or rickets. Non-progressive. Between nucleus and cortex. Box 4 ORANGE "4. NUCLEAR": Senile changes. Fibres at centre become denser → dull/hazy nucleus. Leads to blindness/vision impairment. Center diagram - Detailed cross-section of EYE AND LENS anatomy with labeled parts: Cornea, Iris, Anterior chamber, Lens, Vitreous humor, Retina, Sclera, Ciliary muscle, Zonular fibres, Lens capsule, Anterior capsule, Posterior capsule, Lens nucleus, Cortex, Epithelial cells. Clean anatomical illustration in blue/teal tones. Bottom - CLASSIFICATION summary box: "By Extent: Partial / Complete | By Origin: Congenital / Acquired | By Location: Subcapsular, Cortical, Lamellar, Nuclear" Clean, modern medical infographic style with clear typography, color-coded sections, white text on dark background, professional veterinary pathology layout.

Here is your Cataract Infographic Exam Answer:

Here is a full written summary of everything covered, matching your notes:

CATARACT - Pathology of the Lens

Definition: Opacity of the lens Occurrence: Common in dogs; rare in other animals

ETIOLOGY

Congenital	Acquired
Failure of hyaloid artery to regress	Trauma / Luxation
Impaired translucence of the lens	Degenerative ocular disease
Hereditary predisposition	Senility (common in old stallions)
Deficiency of Vit E	Diabetes mellitus (occasionally in dogs)
	Nutritional: deficiency of Vit D, C, cystein
	Toxins / Ergot (cattle & pigs)
	Absorbed radiation

PATHOGENESIS

Proliferation of the capsular epithelium
Necrosis of the fibre of the lens
Increased sclerosis of the fibres forming the nucleus

CLASSIFICATION

By extent: Partial or complete
By origin: Congenital or acquired
By nature/location of lesion: 4 types

4 TYPES OF CATARACT

1. Subcapsular Cataract (Proliferation of lens epithelium under the capsule)

Seen in: horses, dogs, birds
Anterior polar cataract = proliferation at the front surface
Posterior polar cataract = extends to posterior surface (lens degeneration)
Disorganized proliferation → thicker layers → opacity via posterior synechia/repeated attacks

2. Cortical Cataract (Most common form)

Involves lens fibres - front (anterior cortical) or back (posterior cortical)
Usually follows a corneal ulcer
Accumulation of interstitial fluid → fibres disintegrated and disorganized
Stellate opacity spreading from centre to periphery
Progressive condition

3. Lamellar/Zonular Cataract

Occurs in young animals
Congenital or acquired (puppies after distemper or rickets)
Located between the nucleus and cortex
Non-progressive

4. Nuclear Cataract

Caused by senile changes - fibres at centre become denser → dull/hazy nucleus
Sequelae: Blindness / impairment of vision

EYE & LENS ANATOMY (Diagram Key)

Eye: Zonular fibres, Ciliary muscle, Anterior chamber (aqueous humor), Cornea, Iris, Lens, Vitreous humor, Posterior chamber, Sclera Lens: Lens capsule, Equatorial capsule, Epithelial cells, Anterior capsule (ALC), Posterior capsule, Lens nucleus, Cortex

Sequale

The user is asking about Sequelae of Cataract - the complications/consequences that follow cataract. This is a medical/veterinary pathology topic, so I need to invoke the medical library skill first.

Quick answer: Sequelae of cataract include blindness/vision impairment, lens-induced uveitis (phacolytic or phacoclastic), lens luxation, glaucoma secondary to lens changes, and lens resorption with liquefaction. In veterinary medicine especially in dogs, rupture of the lens capsule can cause severe intraocular inflammation.

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Simple sequeale

Based directly from your notes, here are the Sequelae of Cataract - simple and clean:

Sequelae of Cataract

From your notes (Nuclear Cataract section):

"Blindness / Impairment of vision develops"

Full Sequelae (Veterinary Pathology):

#	Sequela	Notes
1	Blindness	Complete loss of vision
2	Impairment of vision	Partial or progressive visual loss
3	Lens-induced uveitis	Leaking lens proteins → inflammatory reaction
4	Lens luxation	Lens slips from normal position
5	Secondary glaucoma	Increased intraocular pressure
6	Lens liquefaction	Lens contents liquefy (hypermature cataract)
7	Posterior synechia	Adhesion between iris and lens capsule
8	Rupture of lens capsule	Releases lens material → severe uveitis

Simple Memory Point:

Cataract → Opacity → Blindness (the core sequela in exams)

The most important exam answer is:

Blindness and impairment of vision - as stated directly in your notes under Nuclear Cataract sequelae.

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