Question

Identify the instrument:

• A. Maddox rod
• B. Maddox wing
• C. Maddox glass
• D. Red glasses

Answer 1

The Correct Option is A

To accurately identify the instrument shown in the image, we should consider the characteristics and typical uses of the options provided. In the field of ophthalmology, each instrument has a specific purpose:

• Maddox rod: This is a cylindrical lens primarily used to assess deviation in strabismus during vision tests. It transforms a point source of light into a line, aiding in eye muscle balance evaluation.
• Maddox wing: A handheld device for detecting and measuring heterophorias at near distances by prompting the patient to align numbers and lines.
• Maddox glass: Often confused with the Maddox rod, this is used similarly for binocular vision testing but has a different structure and functioning.
• Red glasses: Used in various diagnostic and therapeutic scenarios, mainly for dissociating images during binocular vision testing, but has no cylindrical properties.

Given these descriptions, the correct choice for the instrument in question, based on its cylindrical functions described, is the Maddox rod.