What is CAT PROM5?
The Cat-PROM5 is for clinicians to help understand how cataracts affect patients vision and quality of life before and after surgery. It's a short questionnaire over 2 rounds pre-surgery and post-surgery with five easy-to-evaluate questions. They relate to patients' daily vision experiences to show the impact cataracts have on their daily lives and the impact that surgery has had. The Cat-PROM5 is intended to evaluate whether the patient's vision gets better after undergoing cataract surgery.
No adjustments are made in this measurement for those individuals or groups with visually significant non-cataract comorbidities.
How to Understand CAT PROM 5 Score
CAT PROM5 undertakes a Rasch analysis which allows for a set of questions that focus on one main trait to be condensed into a single score on a continuous scale. These questions are summarized into a score called “Logits” and are designed such that the average population value is zero. Typically, visual difficulty scores in Logits range from +9 to -9 however this score has been recalibrated to a scale of 0-100 with 0 being the worst vision and 100 being the best.
For further information about how to understand CAT PROM 5 scoring go here.
Pre-Operative
Post-Operative
