1: Lens And Cataract: Okap

Front 1

SRK formula?

Back 1

P= A - (2.5L) - 0.9K

P=Diopters (implant)
A=constant specific to lens implant
L=axial length
K= Diopters (avg K readings) **short-cut, mult by 1

Front 2

Cause of: Phacolytic?

Back 2

Lens material leaks through an intact capsule, which is then taken up to macrophages that clog TM.

no KP

Front 3

Cause of: Phacoantigenic?

Back 3

Capsular bag is violated which leads to inflammation.

KP
Synechia

Front 4

Cause of: Lens Particle?

Back 4

Portions of the lens (mainly cortex) remain unnoticed after cataract sx. Pieces directly clog TM.

Moderate AC
Posteriorsynechiae
PAS

Front 5

what is the steepest base curve 8.6 8.9 or 8.3?

Back 5

8.3 = Steep
8.6 = Median
8.9 = Flat
The smaller the number, the steeper the base curve is.

Front 6

AP length of infant and adult?

Back 6

3.5mm
5mm

Front 7

Posterior polar capsule?

Back 7

More visual impairment
Larger
Closer to nodal point
Capsular fragility
Familiar (AD)

Front 8

PAX6 associated conditions

Back 8

Aniridia
Posterior embryotoxin
Peters anomaly
Axenfeld anomaly
Congenital catarcts

Front 9

Congential unilateral cataracts should be removed by?

Back 9

6-weeks

Front 10

Congential bilateral cataracts should be removed by?

Back 10

3-months

Front 11

Will hyperopic patients experience more or image displacement with Flat tops?

Back 11

Less image displacement
due to distance from optical center

Front 12

Will hyperopic patients experience more or less image jump with Flat top?

Back 12

More image jump
due to additive prism component

Front 13

Will hyperopic patients will experience more or less image displacement with Round Tops?

Back 13

More image displacement
due to distance from optical center

Front 14

Will hyperopic patients experience more or less image jump with Rounds Tops?

Back 14

Less image jump
due to subtractive prism component

Front 15

Will myopic patients experience more or less image displacement with Flat tops?

Back 15

Less image displacement
due to distance from optical center

Front 16

Will myopic patients experience more or less image jump with Flat tops?

Back 16

Less image displacement
due to distance from optical center

Front 17

Will myopic patients experience more or less image displacement with Round tops?

Back 17

More image displacement
due to distance from optical center

Front 18

Will myopic patients experience more or less image displacement with Round tops?

Back 18

More image jump
due to additive prism component

Front 19

What is the Internal Reflection in a human eye?

Back 19

48.6

Front 20

Accomodation is mediated by which fibers of which nerve?

Back 20

Parasympathetic fibers of CN III

Front 21

Which drops induce accomdation?

Back 21

ParasympothMIMETICS
pilocarpine

Front 22

Which drops block accomodation?

Back 22

ParasympathoLYTIC
atropine

Front 23

Lenticonus of Lentiglobus is bilateral and associated with Alport?

Back 23

Lenticonus

Front 24

Which lenticular abnormality is associated with Weill Marchensani?

Back 24

Microspheria (dwarfs are all around small in size)
AR

Front 25

Pharmocologic treatment of microspherophakia is?

Back 25

Cycloplegics, to break an attack of angle-closure, by pulling the lens backward thru tightening of zonular fibers.

Front 26

Which type of cataracts are the most common types in congenital and infantile catarcts?

Back 26

Lamellar
Zonular

Front 27

Etiologies of bilateral, genetic and metabolic disease catarcts?

Back 27

Lowe syndrome - oculocerebrorenal syndrome
Trisomy 13 -15
Alport - neurosensory hearing loss, white yellow retinal lesions
Fabry - lysosomal storage disease, verticulata, conj aneurysms, post spoke-like cataracts, papilloedema, macular edema, optic atrophy and retinal vascular dilation.

Front 28

Usually small, bilateral, symmetric, nonprgressive opacities that do not impare vision?

Back 28

Anterior polar cataracts

AD: microopth, persistant pupillary membrane, ant lenticonus

Front 29

Generlly produce more visual impairment bc they tend to be larger and positioned closer to the nodal point.

Capsular fragility has been reported. Occasionally prgress.

Back 29

Posterior polar cataracts

Front 30

Pearly white cataracts associated with?

Back 30

Congenital rubella syndrome

Live virul particles inside lens

Front 31

Posterior subcapsular cataracts (PSC) are associated with?

Back 31

trauma
corticosteroid use
inflammation
ionizing redation
alcoholism

Migration of lens epithelial cells from equator to post. capsule (Wedl or bladder cells)

Front 32

Back 32

Stellate cataract
Roseette cataract from blunt or nonperforating injury

Front 33

Cataracts assoicated with UV radiation?

Back 33

CORTICAL catarcats

Front 34

Sunflower cataract?

Back 34

Chalcosis when copper FB depostis in Descemet's membrane.
WIlson disease - cuprous oxide deposited in anterior lens capsule and subcapsular cortex

Front 35

Degenerative ocular diseases:
RP, essential iris atrophy, absolute glaucoma

Back 35

PSC may prgress to total lens opacifiction

Front 36

Increasing the phaco bevel tip with INCREASE or DECREASE the force generated?

Back 36

INCREASE

Front 37

1) Dye Disappearance
2) Jones I
3) Jones II

Back 37

1) Duh
2) Dye Disappearnace + swab in nose to detect
3) Irrigating and collecting at nose