ACOD Atypical Quiz

Antimetropia is an eye condition in which:

• The peripheral vision is significantly reduced

• The intraocular pressure is significantly raised

• The two eyes have no difference in refractive power

• One eye is myopic while the other is hyperopic

A significant problem for the anisometrope is differential prism, and this occurs when the wearer:

• Looks through the optical centres of the lenses

• Is looking into the distance

• Looks away from the optical centres of the lenses

• Is walking around

The adjustment of the spectacle frame for final fit should be completed:

• Before the vertex measurements are taken

• After the vertex measurements are taken

• After the lenses are ordered

• At any time that suits the customer

Aphakia is an eye condition in which:

• The customer pretends to suffer from an eye condition

• The two eyes have a significant difference in refractive power

• The crystalline lens is absent

• The peripheral vision is significantly reduced

A significant benefit of using a Fresnel prism is:

• Increased lens refractive index

• Increased light transmission

• Reduced lens thickness and weight

• Reduced surface reflections

A dispensing constraint for the optical dispenser when serving a customer with high Ametropia is:

• The stronger the prescription, the selected frame eyesize needs to be as small as possible

• The longer the vertex distance, the selected frame eyesize needs to be as small as possible

• The stronger the prescription, the selected frame eyesize needs to be as large as possible

• The shorter the vertex distance, the selected frame eyesize needs to be as small as possible

Vertex distance has important relevance as it can impact:

• The axis of the lenses

• The effective power of the prescription

• The lens material

• The customer’s PD’s

Advantages of lenticular lens designs include:

• Increased light transmission

• Reduced surface reflections

• Increased refractive index

• Reduced lens thickness and weight

Types of high Ametropia include:

• Hyperopia of more than +6.00D and presbyopia of more than +2.00D

• Myopia of more than -6.00D and presbyopia of more than +2.00D

• Hyperopia of more than +6.00D and myopia of more than -6.00D

• Aphakia and astigmatism of less than 2.00D

Which of the following lens choices should always be considered for a customer who is both anisometropic and presbyopic:

• Distance single vision and a separate pair of near single vision

• Progressive

• Trifocal

• Bifocal