During a standard eye exam, which eye is tested first?

During a standard eye exam, which eye is tested first?

• A. Left
• B. Right
• C. Both
• D. Alternate

Answer: (B)

Starting with the right eye sets a consistent, one-eye-at-a-time sequence for the exam. This standard starting point helps ensure that instructions, lighting, occlusion, and patient cues are applied the same way for each eye, making results easier to compare across visits and across different tests. After finishing with the right eye, the clinician then tests the left eye using the same procedure, so the conditions are mirrored and comparisons remain valid. Testing both eyes at once or frequently switching back and forth would introduce more variables and potential confusion, which is why the right eye is typically tested first.

Starting with the right eye sets a consistent, one-eye-at-a-time sequence for the exam. This standard starting point helps ensure that instructions, lighting, occlusion, and patient cues are applied the same way for each eye, making results easier to compare across visits and across different tests. After finishing with the right eye, the clinician then tests the left eye using the same procedure, so the conditions are mirrored and comparisons remain valid. Testing both eyes at once or frequently switching back and forth would introduce more variables and potential confusion, which is why the right eye is typically tested first.