What type of chart is typically used by healthcare professionals to evaluate visual acuity?

What type of chart is typically used by healthcare professionals to evaluate visual acuity?

• A. Astigmatism chart
• B. Cornwall chart
• C. Snellen chart
• D. Grid chart

Answer: (C)

The Snellen chart is the standard tool used by healthcare professionals to evaluate visual acuity. It features a series of letters, usually in decreasing sizes, which patients are asked to read from a designated distance. This method provides a clear measurement of how well a person can see compared to the expected standard vision. The results from the Snellen chart are expressed as a fraction, such as 20/20, which indicates normal vision. Using this chart allows professionals to categorically assess and document a patient's visual ability, which is crucial for diagnosing and monitoring various eye conditions. The clarity and straightforward nature of the Snellen chart make it a widely accepted instrument in eye exams, as it effectively distinguishes between different levels of visual acuity in a way that is easily interpretable.

The Snellen chart is the standard tool used by healthcare professionals to evaluate visual acuity. It features a series of letters, usually in decreasing sizes, which patients are asked to read from a designated distance. This method provides a clear measurement of how well a person can see compared to the expected standard vision. The results from the Snellen chart are expressed as a fraction, such as 20/20, which indicates normal vision.

Using this chart allows professionals to categorically assess and document a patient's visual ability, which is crucial for diagnosing and monitoring various eye conditions. The clarity and straightforward nature of the Snellen chart make it a widely accepted instrument in eye exams, as it effectively distinguishes between different levels of visual acuity in a way that is easily interpretable.