Bits & bobs

Question 1

Spherical Ametropia

Answer 1

A distance object forms a point image which is NOT on the retina

Question 2

Myopia

Answer 2

A refractive condition where a distance object is focussed in front of the retina due to the eyeball being too long or too short

Question 3

Vertex distance

Answer 3

The distance from the back plane of the spectacles to the apex of the cornea

Question 4

Which motor nerve causes the ciliary muscle to contract?

Answer 4

Parasympathetic division of the oculomotor nerve

Question 5

Type of drug used to prevent accommodation when refracting young children with hypermetropia

Answer 5

Cycloplegic

Question 6

Cycloplegic refraction

Answer 6

Finds the total hypermetropia

Question 7

Rapidly progressive myopia (Juvenille Stress)

Answer 7

Condition in which myopia is progressing/increasing rapidly, due to an increase in axial length. Could be due to prolonged accommodation.

Question 8

Grades of Binocular Vision

Answer 8

*Simultaneous Perception
(lowest)

*Fusion

*Stereopsis (highest)

Question 9

Advantages of non-contact tonometry

Answer 9

*No anaesthesia required
*No risk of corneal damage
*No risk of cross-infection
*Quicker
*Can be performed by support
staff

Question 10

Why might a child be recommended to wear a patch over one eye?

Answer 10

*To treat amblyopia
*Occlude eye with better VA to
force amblyopic eye to work
*Can improve VA in eye with
lower VA