Management of Decompensated Phoria

Question 1

HOW TO MANAGE DECOMPENSATED PHORIA

Answer 1

Exercises / Vision Therapy
Refractive Modification
Prism Prescription

Question 2

always the first choice in managing decompensated phoria

Answer 2

Excercises/Vision therapy

Question 3

Examples of vision therapy

Answer 3

Pencil pushups
Brock string
PD Modification

Question 4

Hold a pencil in front of the face and move the pencil towards the eyes until px see blur or double the hold it for few seconds then repeat whole procedure.

Answer 4

pencil push-ups

Question 5

visual exercises is done in the___________ so that the muscles of the eye are not yet tired

Answer 5

morning

Question 6

T/F
1 cycle is 3 months, 6 months = 2 cycles

Answer 6

F
1 cycle is 6 months, 1 year = 2 cycles

Question 7

What type of pencil pushup

Patient has decompensated exophoria
Since the eyes are out, you train it to go inward.

Answer 7

PENCIL TO NOSE THERAPY OR TEST

Question 8

What type of pencil pushup

Patient has decompensated esophoria
No holding, you train the eyes to go outward

Answer 8

NOSE TO PENCIL TEST

Question 9

Consists of red, yellow, green balls

Answer 9

brock string

Question 10

Primary colors for pigment

Answer 10

RYB

Question 11

Primary colors for light or wavelength

Answer 11

RGB

Question 12

MATCH

Color:
Red
Yellow
Green

Location of focus:
in front of the retina
behind retina
exactly at the retina

EOR:
HYPEROPIA
MYOPIA
EMMETROPIA

This is called?

Answer 12

Red: Behind the retina: Myopia
Green: In front of the retina: Hyperopia
Yellow: Exactly on the retina: Emmetropia

Reverse chromatic abberation

Question 13

What produces pigments on the retina where there are cones for color recognition?

Answer 13

Erythrolabe - red
Chlorolabe - green
Cyanolabe - blue

Question 14

What appearance should the patient see if they are asked to look at the yellow (middle) bead?

Answer 14

X appearance
as if there are two strings coming from the yellow

Question 15

What appearance should the patient see if they are asked to look at the red (farthest bead)?

Answer 15

inverted V

Question 16

What appearance should the patient see if they are asked to look at the green bead?

Answer 16

V

Question 17

Exercise for patients with decompensated Exo using brock string

Answer 17

Fixation target is yellow bead, slowly move the bead towards the eye of the patient until patient sees double

Question 18

Exercise for patients with decompensated ESO using brock string

Answer 18

Move the yellow bead away until the patient sees single.

Question 19

given to long distance drivers at night

Answer 19

AMBER TINT

Question 20

WHAT tint on the eye of the patient the eyes become clearer compared to gray and red.

Answer 20

Yellow

Question 21

The yellow pigments/wavelength redirects the_______ to the retina.

Answer 21

light

Question 22

Significance of getting the PD of patient

Answer 22

• Avoid prismatic effect
• Create prismatic effect for patients with tropia and decompensated phoria

Question 23

How does PD avoid prismatic effect?

Answer 23

it aligns the optical center of the lens to the line of sight of the patient.

Question 24

the basis for computing the amount of decentration to produce the desired prismatic effect or avoid undesirable prismatic effect use for binocular vision purpose

Answer 24

PD pero dpindi

Question 25

ANSI / ANZI Standard (American National Standard Institute)

Answer 25

within 2 millimeters of decentration of PD is the standard

Question 26

why ganto within 2 millimeters of decentration of PD is the standard

Answer 26

within 2 mm, no complaints will be felt from the patient

Question 27

Decentration of PD for EXO patients

Answer 27

Since the deviation is outward, decentration is inward

Question 28

Decentration of PD for ESO patients

Answer 28

Since the deviation is inward, decentration is outward

Question 29

Formula for decentration

Answer 29

(PD of frame - Distance PD of Px) /2

Question 30

PD of frame: 70mm PD of px: 64/62 EXO PX

Answer 30

dec = (70-64)/2 = 6/2 = 3 mm inward decentration

Question 31

overminusing will_______- accommodation, thereby ________________ accommodative convergence thereby reducing the size of _______-deviation

Answer 31

drive, increasing, exo

Question 32

overplussing will __________ accommodation therefore __________ accommodative vergence and an _______-deviation will become smaller

Answer 32

relax, reducing, eso

Question 33

T/F Any amount of astigmatism is fully corrected.

Answer 33

true duh ang dali dali

Question 34

oh eto why is astigmatism always fully corrected?

Answer 34

Because it is already structural (especially -0.75D above → either cornea, tilting of lens, zonules of zinn) -0.25D to -0.50D is still considered physiologic

Question 35

If glasses are given an adjustment period of up to __________ is necessary followed by orthoptic assessment with or without glasses

Answer 35

2 weeks

Question 36

giving the minimum amount of __________ prism primarily based on fusional reserves

Answer 36

relieving

Question 37

Criterion for prism prescription if EXO

Answer 37

Sheard's

Question 38

Formula for prism rx sheard's criterion

Answer 38

prism = [2 (phoria) - compensating vergence finding]/3 or prism = [2 (VT13B) - 16A or 16B]/3

Question 39

Prism RX: VT13B = 8 exo VT16A = 10 VT16B = 15/2

Answer 39

prism = [2(8)]-10]/3 = 6/3 = 2 prism BI

Question 40

In sheard's criterion, _______ prism is given for correction

Answer 40

base-in

Question 41

percival's criterion is also known as _____________

Answer 41

middle-third criterion

Question 42

Criterion for prism prescription if ESO

Answer 42

percivals

Question 43

Middle third accommodation is for computation of _________ using PRA and NRA

Answer 43

reading add

Question 44

It suggests that PFR(16a) & NFR(17a) should be balanced and that one should not be more than double the other.

Answer 44

percival's

Question 45

formula for percival's criterion

Answer 45

prism = 1/3 TOTAL RANGE - NFR wherein total range is = PFR +NFR or prism = [(PFR+NFR)/3]-NFR prism = [(16A + 17A)/3]-17A

Question 46

In percival's criterion, _______ prism is given for correction

Answer 46

BO

Question 47

VT13B = 4 eso 16A = 11 17A = 4

Answer 47

prism = [(11+4)/3]-4 =(15/3)-4 = 5-4 = 1 prism BO

Question 48

When is prism not given during computation?

Answer 48

If result is negative

Question 49

Primary colors for: 1. Pigment 2. Light/Wavelength 3. Brock string/Combination of pigment and light

Answer 49

1. RYB 2. RGB 3. RYG

Question 50

Pencil push up is done in the morning for atleast _______ times for _____ months

Answer 50

10-20, 2-6

Question 51

Encourage eye to go inward

Answer 51

pencil to nose

Question 52

Encourage eye to go outward

Answer 52

Nose to pencil

Question 53

Brock string is just like _______

Answer 53

diplopia test

Question 54

If px with a normal eye is instructed to look at the first bead while observing the 2nd bead, the string should be as if

Answer 54

towards the second bead (Triangle) inverted V

Question 55

If px with a normal eye is instructed to look at the third bead while observing the 2nd bead

Answer 55

The string should be as if coming from the second bead (V)

Question 56

What criterion - Px phoria is exo - [2(demand of phoria)-compensating phoria]/3 - Base-in prism is given

Answer 56

Sheard's criterion

Question 57

What criterion - Px phoria is eso - [PFR+NFR/3] - NFR

Answer 57

Percival's criterion