Lens Flashcards

1
Q
Which nucleus contains the Y stutures?
Embryonic
Fetal
Adult 
Juveniles
A

Fetal CONTAINS Y stutures

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2
Q
Which technique will tell you an opacity is present? 
Retroillumination
Speculator reflect
Direct focal-parallel pied 
Direct focal-optic section
A

Retro

THE DIRECT FOCAL PARRALLPID TELLS ME WHERE IN THE LENS

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3
Q

WHICH OF THE following normal lens changes is worrisome with glaucoma?
A . Cortex thickening
B. Shallowing of anterior chamber

A

B shallowing anterior chamber increase in IOP (phakomorphic glaucoma) .

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4
Q

T/f patients experiencing phakomorphic glaucoma should be on glaucoma meds.

A

FALSE. REMOVE THE LENS FOR THIS TYPE OF GLAUCOMA

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5
Q

All of the following are NORMAL age changes of the lens except

A. Size increases
B. Color remains same
C. Zones of discontinuity are less distinct
D. Capsular iridescence has a shen of red, blue or green off of capsular

A

B. The color of the lens changes from clear to yellow brown. THE POSTERIOR SECTION OF THE LENS IS ALWAYS DARKER.

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6
Q

ALPORT SYNDROME IS ASSOCIATED WITH WHICH OF THE FOLLOWING:

A. Microspherophakia 
B. Coloboma
C. Lentoglobus 
D. Lenticonus 
E, ectopia lentils
A

D. ALPORT SYNDROME IS ASSOCIATED WITH LENTICONUS!!! NOT LENTIGLOBUS

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7
Q

WHICH TYPE OF SENILE CAT. Would we see a myopic shift and a compliant of secondary sight?

A. Cortical
B. Nuclear cataract
C. PSC

A

B. Nuclear cat. !!!!! BIGGEST COMPLIANT IS OVER TIME THEIR VISION UP CLOSE STARTED IMPROVING.

AND THEY HAVE PROBLEMS WITH GLARE AND ITS WORST AT NIGHT

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8
Q

Which of the following cortical cat is associated with total liquidification of the cortex:

A. Incipient 
B. Hyper mature
C. Mature 
D. Morgan ion cataract 
E. Membranous cataract stage
A

D. Morgan ion CATARAT . IS ASSOCIATED WITH COMPLETE LIQUIDIFCATION OF THE CORTEXT. Subclass of hyper mature.

-will see lens sinking to bottom.

E. Is wrong because it involves total reabsorption of lens contents.

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9
Q

Which of the following cataract is has worst vision in bright illumination?
A. Cortical
B. Nuclear
C. PSC

A

C. Vision is reduced in early stages and their vision is worst in day

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10
Q

What type of refractive shift do you see in cortical cat?

Hyperopia
Myopia

A

Hyperopia

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11
Q

Retroillumination is required for which two classifications? On the LOCS CARD

A

POSTERIOR SUBCAPSULAR
CORTICAL

YOU DO NOT NEED RETROILLUN FOR CORTICAL

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12
Q

PERMENANT DILATION IS GOOD FOR WHICH type of cat
A. Nuclear
B. Cortical
C. PSC

A

PSC!!!

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13
Q
THE MOST COMMON CONGENITAL CATARACT: 
A. Congenital total
B. Non-specific punctate 
C. Sutural 
D. Purvalent 
E. Zonullar cataract
A

E. Zonullar

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14
Q

T/f posterior congenital polar cataract has a greater affect on vision than anterior congenital polar

A

True!!!

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