Understanding Eyeglass Prescriptions After Video Activity

What is the Latin abbreviation for right eye and left eye in a prescription?

• OR and OS
• OD and OS
• OC and OL
• OD and OL

When light focuses in front of or behind the retina instead of directly on it, what occurs?

• Perfect vision
• Astigmatism only
• Vision becomes blurred
• Double vision

Which condition occurs when the eye shape is more like a football or rugby ball?

• Myopia
• Hyperopia
• Presbyopia
• Astigmatism

What does a positive number in the sphere measurement indicate?

• Short-sightedness
• Perfect vision
• Long-sightedness
• Astigmatism

What is the measurement unit used for lens power in prescriptions?

• Millimeters
• Centimeters
• Dioptres
• Degrees

What does "pl" written in a prescription stand for?

• Plus
• Plano
• Partial
• Primary

What is the term for the additional correction required for near work as we age?

• Prism
• Cylinder
• Sphere
• Add

What measurement is needed to ensure lenses are properly centered in frames?

• Axis measurement
• Base curve
• Pupillary distance
• Diameter

What does BC stand for in contact lens prescriptions?

• Below Center
• Basic Curve
• Base Curve
• Back Contact

What age typically marks the onset of presbyopia?

• 30 years
• 35 years
• 40 years
• 45 years