March 10, 2026

How Carrot’s BOLT Algorithm Is Transforming Eye Exams

Sarah Kersting-Herbert
A screenshot of the Carrot software

Key Take Aways

  • Carrot’s BOLT algorithm significantly reduces exam time. Threshold testing can be completed in approximately 2 to 4 minutes per eye, compared to the traditional 5 to 7 minutes, improving both efficiency and patient comfort.

  • Speed does not compromise accuracy. BOLT intelligently evaluates the entire visual field, identifying areas that require deeper testing while preserving reliable, clinically meaningful results.

  • Built-in progression analysis supports disease monitoring. After two consistent exams on the same eye, clinicians can generate progression reports to track glaucoma and other visual field changes over time.

  • Expanded testing capabilities enhance clinical versatility. Carrot supports multiple monocular patterns, including 24-2, 10-2, and 30-2, along with kinetic testing, screening protocols, color vision, and pupillometry.

  • Efficiency drives better practice performance. Faster, more comfortable exams improve patient satisfaction while allowing providers to increase throughput and optimize daily clinic capacity.

In 2018, Virtual Field (now Carrot) introduced an exceptional eye examination experience that has continued to evolve and redefine eye care. Eye care professionals, including ophthalmologists and optometrists, have harnessed the power of Carrot’s BOLT algorithm to examine patients more efficiently, comfortably, and accurately. In this blog, we discuss into the innovative BOLT algorithm developed by Carrot and explore how it has been transforming eye examinations since its introduction.

The Carrot Experience

Carrot offers a comprehensive suite of eye exams that go beyond the conventional tests. The lineup includes Visual Fields (24-2, 10-2, 30-2), Kinetic Visual Field (Goldmann Perimetry), Screening (Ptosis, Esterman), Color Vision, Pupillometry, and more. What sets Carrot apart is the company’s unwavering commitment to delivering fast, efficient, and comfortable exams to patients.

Exploring the BOLT Algorithm

At the core of Carrot’s success lies its proprietary BOLT thresholding algorithm. This groundbreaking algorithm significantly reduces testing time, taking just 2-4 minutes per eye compared to the industry-standard threshold taking 5-7 minutes per eye. BOLT strikes the perfect balance between accuracy and speed, ensuring that patients receive reliable results without spending unnecessary time in the examination chair.

This algorithm achieves its remarkable efficiency by evaluating the visual field as a whole. It identifies positions that require further testing and those that already provide sufficient information. This intelligent approach not only streamlines the examination process but also enhances the accuracy of the results. BOLT is available for three monocular patterns: 24-2, 10-2, and 30-2, making it a versatile tool for eye care professionals.

After just two of the same exams on the same eye, Carrot enables eye care professionals to generate a progression analysis report. This report is invaluable for tracking changes in a patient’s visual field over time, making it a crucial tool for detecting and monitoring eye diseases.

The Importance of the BOLT Algorithm

Algorithms like BOLT continue to play a vital role in eye care. They are indispensable for glaucoma detection, monitoring eye diseases, and evaluating treatment effectiveness. Speedy exams not only improve the patient experience but also allow eye care professionals to see more patients in a day, ultimately benefiting the entire healthcare system.

Real-World Success Stories

Curious to see how the BOLT algorithm has continued to transform eye care practices since its introduction in 2018? Carrot’s website features a collection of case studies from actual customers who have embraced this innovative technology. These stories showcase the tangible benefits of using BOLT, from improved patient satisfaction to enhanced diagnostic accuracy. 

Conclusion

Since its introduction in 2018, Carrot’s (formerly Virtual Field) BOLT algorithm has been at the forefront of revolutionizing eye examinations. It continues to offer speed and accuracy, ensuring patient comfort with the Carrot experience. As eye care professionals embrace this cutting-edge technology, patients can look forward to faster exams and more reliable results. The BOLT algorithm is not just a leap forward in eye care; it’s a game-changer for the industry. Join the eye care revolution with Carrot and experience the best eye exam experience today.

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