Section c

Question 1

Describe the Push up Method of measuring a subject’s amplitude of accommodation

Question 2

what would you expect He amplitude of accommodation of a 40 year old to be (5)

Answer 2

13 (

Question 3

State the normal range of intra-pressure? (includenit in your answer
by how much does the IOP vary during the day (15)

Answer 3

normal IOP=10-24mmHG

range 2-3mmHG

Question 4

What is perimetry? Explain the difference between static perimetry and kinetic perimetry (20)

Question 5

A child has a squint which is described as being a fully accommodative esotropia. What does this mean and how would it be treated (30)

Question 6

Name a test that can be used to determine wheather a patients heterotropia is concomitant or incomitnat (5)

Answer 6

Hess Screen

mobility test

Question 7

complete the table to show the dimensions of the standard reduced eye. Include units and signs (where appropriate) (20) 
Axial length
refractive index
radius of curvature or reduuced surface
first focal length

Answer 7

axial length =+22.22mm
refractive index = 4/3
radius of curvature or reduced surface +5.55mm
first focal length F= -16.67mm

Question 8

low vision patients requiring a high reading addition may also be given acompanying prisms what base direction would be prescribed
explain why prismatic correction is required

Answer 8

base in

to aid extra convergence needed for very near objects

Question 9

explain the terms
facultative hypermetropia
absolute hypermetropia
and manifest hypermetropia

Question 10

A ssubject wearing -8.00D with a vertex distance of 15mm chooses a new frame in which the vertex distance will be 11mm. calculate the lens power that should be ordered (to nearest 00.25) for the new frame (15)

Question 11

In relation to eye movement explain what is meant by term
version
vergence (20)

Answer 11

versions- conjugate Movement.the eyes move together binocularly and angles between the visual axis is constant

Vergences - Disjunctive Movements . eyes move in opposite directions

Question 12

A slit lamp can be used to assess the health of the anterior ocular structures, give 2 other uses for a slit lamp in optometric practice (10)

Question 13

An unaccommodated eye with -1.50D axial myopia views a point object at 30cm. If the eye has a pupil diameter of 5mm what is the diameter of the retinal blur disc? (25)

Question 14

What purpose of an optometer

Question 15

breif description of simple optometer (20)

Question 16

Give 2 reasons why the results obtained with a simple optometer may not be accurate

Question 17

Define the term amblyopia

state 1 cause of occlusion amblyopia

Question 18

list the grades of binocular vision

which is highest grade

Question 19

give 3 advantages of a non - contact method of tonametry

Question 20

Explain early onset juvenile Stress Myopia

Question 21

3 disadvantages of using S nellan chart to asses the VA of low Vision Patient