Which option is not a visual acuity chart?

• A. Snellen chart
• B. Tumbling-E chart
• C. Jaeger chart
• D. Spirograph chart

Answer: (D)

Visual acuity charts are standardized tools that measure how clearly a person sees at distance or up close by presenting symbols that vary in size in a controlled way. The Snellen chart is the classic distance-chart with rows of letters that get smaller, used to determine how well you see at a standard testing distance. The Tumbling-E chart uses the letter E in different directions, so you can indicate its orientation rather than reading letters, which helps with testing literacy or language barriers. The Jaeger chart is used for near vision, presenting text in progressively smaller print to find the smallest size you can read up close.

The Spirograph chart isn’t used for vision testing. It’s a drawing tool that creates geometric patterns and doesn’t provide standardized optotypes, sizes, or a fixed testing distance. Because it lacks the structured design that defines a visual acuity chart, it isn’t used to measure visual acuity.