KALCULUS Practitioner FAQ


  • KALCULUS is an advanced web platform designed to simplify and enhance the orthokeratology lens fitting process. It offers fully automated custom designing of lenses, enhanced troubleshooting capabilities, and optimized treatment outcomes for a variety of patient groups.

  • KALCULUS uses complex algorithms to create custom Ortho-K lens designs based on individual corneal characteristics and vision needs. This eliminates the need for manual lens adjustments and steep learning curves for practitioners.

  • Yes, KALCULUS is equipped to handle complex eye corrections such as high myopia, astigmatism, presbyopia, and post-laser eyes. Its advanced algorithms can create customized lens designs for various vision conditions.

  • Yes, KALCULUS is designed to effectively correct higher degrees of myopia and astigmatism through its advanced algorithms and personalized lens design process.

  • The time frame for patients to achieve optimal vision with KALCULUS varies based on individual factors. Typically, noticeable improvement can be experienced within a few days due to its unique design. However, full optimal vision may take a few weeks to a few months of consistent lens wear.

  • KALCULUS addresses the issue of lens decentration through its advanced algorithms and AI technology. The system intelligently designs lenses based on each unique cornea, ensuring proper centration. If any issues arise, the AI-powered troubleshooter automatically adjusts lens parameters for a better fit outcome, reducing the likelihood of lens decentration and improving overall performance.

  • We highly recommend the daily use of hydrogen peroxide contact lens solution for proper lens disinfection, a rigid lens cleaner to rub and clean the lenses in the morning and the use of non-preserved eye lubricants during lens insertion. Lens containers should be changed once a new bottle of solution is used. 

  • Always check for air bubbles in the lens. If there are any present, remove and do it again. Either insert with the lens fully coated with a conditioning solution or insert the same way as a scleral lens (face down) to prevent air bubbles forming.
  • Prepare to go to bed immediately after lens insertion. Once the eye is not tearing, the patient should lie down and close their eyes as soon as possible. The longer they leave the lens on while they are awake, the higher chance of lens decentration or bubbles forming or lens binding/adhesion.
  • Remove the lens immediately after waking up. Similar to the previous point, we want to prevent lens adhesion and a compromise in the corneal tissues.
  • Remove the lens gently. With the use of a suction pump, lenses can be removed rather abruptly causing corneal compromise. Loosening the lens prior to removal is important. Removal of lens using the popping out technique will be a good alternative.
  • Give it about 1 week for the refractive error to show up as almost fully corrected on the topography.
  • Give it about 4-5 weeks for the vision to stabilize (from morning to night). It may take significantly longer for higher myopes/astigmatic cases.
  • There should be no pain during lens wear. Awareness is normal however pain is not. Pain will normally result in conjunctival hyperemia and tearing whereas those will fade away if it is simply an awareness of the lens.

  • From the 1st night of lens wear, we recommend reviewing the patient on the 1st day, 1st week, 3rd week, 7th week and 16th week. The exact schedule may change according to your clinical expertise in managing the patient as well as depending on the treatment outcome. 

  • KALCULUS stands out with its AI-driven troubleshooting capabilities. The platform recognizes patterns in troubleshooting scenarios and adjusts lens parameters automatically to achieve better fit outcomes, minimizing patient visits and chair time.

  • Yes, KALCULUS’s user-friendly interface and guided processes minimize the learning curve for practitioners. The platform simplifies the lens designing process, enabling practitioners to offer the best fit for each patient’s eye.

  • KALCULUS eliminates the need for traditional trial-and-error fitting processes. Its advanced algorithms allow practitioners to custom design lenses without the need for extensive lens fitting and lens designing experience.

  • KALCULUS offers benefits such as faster and more precise lens design, improved troubleshooting capabilities, and enhanced treatment outcomes. It allows practitioners to focus on patient care rather than complex fitting procedures.

  • Yes, KALCULUS empowers practitioners to customize each lens based on individual corneal characteristics and vision needs. Its algorithms ensure accurate, optimized lens designs for a variety of patient groups.

  • KALCULUS’s AI technology recognizes patterns in troubleshooting scenarios, guiding practitioners through lens adjustments for better fit outcomes. This enhances patient satisfaction and treatment effectiveness.

  • KALCULUS’s success rate is built on its ability to tailor lens designs to each patient’s unique corneal characteristics and vision needs. Its fundamental designing capabilities were programmed to mimic an experienced lens designer who has designed over 20,000 lenses for a wide variety of patients in a specialty contact lens practice in Singapore. Its automated process is designed to optimize treatment outcomes.

  • Yes, KALCULUS prioritizes patient comfort and safety. Its automated lens design process aims to achieve both comfort and effective vision correction, ensuring a positive experience for patients.

  • Yes, KALCULUS is effective in addressing myopia control in children. Its customized lens designs can help slow down myopia progression in younger patients.

  • Yes, KALCULUS offers optimized lens designs for adults with various vision needs. Whether it’s for regular vision correction or specific conditions like presbyopia or post-lasik correction, KALCULUS can help.

  • KALCULUS provides tailored guidelines for specific patient groups, ensuring optimized lens designs that address their unique vision requirements.

  • KALCULUS offers comprehensive support for eyecare practitioners, including training, guidance, and troubleshooting assistance to ensure successful integration into their practice.

  • Yes, KALCULUS can seamlessly integrate into practitioners’ existing workflows. Its user-friendly interface makes the transition smooth and efficient.

  • Practitioners can access KALCULUS’s advanced algorithms and AI through the platform’s intuitive interface. Training and guidance are provided to ensure proper utilization. Reach out to a distributor or simply contact us to indicate your interest to join us as a KALCULATOR.

  • Yes, KALCULUS offers training and support for practitioners new to the platform. It simplifies the lens designing process, making it accessible to practitioners of all levels.

  • KALCULUS’s AI-driven troubleshooting minimizes confusion on the practitioner’s part by analysing the root cause of a fitting issue, benefiting both practitioners and patients by saving char time and clinic visits respectively.

  • KALCULUS’s pricing is competitive and offers value considering its advanced features, enhanced treatment outcomes, and reduced chair time. Reach out to a distributor to find out more.

  • KALCULUS’s fitting process involves creating custom lens designs based on individual corneal characteristics and vision needs. A series of simple questions will need to be answered before the automated designing process begins. 

  • KALCULUS requires practitioners to have access to patients’ corneal topography and other relevant data. An Ortho-K consultation will still need to take place to determine the patient’s suitability. Once the patient is deemed to be suitable and the patient has agreed to commence treatment, you may begin the lens designing process. 

  • KALCULUS can be used for patients with a history of eye surgeries, but individual assessment is necessary to determine suitability.

  • KALCULUS’s lens designs aim to provide clear vision throughout the day, even for those with complicated refractive errors. 

  • KALCULUS’s lens designs consider various corneal characteristics, including irregularities, to optimize lens fit and vision correction. However, there are certain irregularity and asymmetrical indices that will need to be taken note of that may contraindicate or reduce the success rate of Ortho-K. 

  • Practitioners can determine patient suitability for KALCULUS based on individual eye conditions and vision needs. Corneal topography will be mandatory for proper lens designing and follow-up care.

  • Absolutely, as long as practitioners possess the baseline ocular information of the patient including corneal topography maps, transitioning to KALCULUS is possible.

  • The effect of KALCULUS’s lens treatment can last as long as the lenses are worn regularly. Stopping usage may result in vision returning to its original state.