Instrument placed over the non-tested eye during a standard vision test to prevent peeking?

Instrument placed over the non-tested eye during a standard vision test to prevent peeking?

• A. Eye occluder
• B. Otoscope
• C. Ophthalmoscope
• D. Percussion hammer

Answer: (A)

During a standard vision test, the non-tested eye is covered with an eye occluder. This blocks vision from that eye so the tester can accurately measure the other eye’s vision without the patient peeking or peeking with the covered eye. An occluder is designed specifically for this purpose, keeping the tested eye visible to the chart while preventing any shortcuts. The other tools mentioned have different roles: an otoscope examines the ear, an ophthalmoscope looks at the inside of the eye, and a percussion hammer tests reflexes.

During a standard vision test, the non-tested eye is covered with an eye occluder. This blocks vision from that eye so the tester can accurately measure the other eye’s vision without the patient peeking or peeking with the covered eye. An occluder is designed specifically for this purpose, keeping the tested eye visible to the chart while preventing any shortcuts. The other tools mentioned have different roles: an otoscope examines the ear, an ophthalmoscope looks at the inside of the eye, and a percussion hammer tests reflexes.