--- title: I did not sleep well last night and feel tired. Why did I receive a Within Baseline Range result? description: An OPTOVERA Within Baseline Range result reflects the measured pupil response. It does not show that the User is fully rested or free of fatigue. --- [Skip to content](https://knowledge.sobereye.com/en/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci#main-content) - [English](https://knowledge.sobereye.com/en/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Español](https://knowledge.sobereye.com/es/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Italiano](https://knowledge.sobereye.com/it/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Português - Brasil](https://knowledge.sobereye.com/pt-br/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) English Show submenu for translations ![](https://knowledge.sobereye.com/hs-fs/hubfs/00%20MKT%20material/Logo_blu_optovera.png?width=904&height=186&name=Logo_blu_optovera.png) - Home - Products - Pricing - Blog - Company Open main navigation Close main navigation - Home - Products - Pricing - Blog - Company - - [English](https://knowledge.sobereye.com/en/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Español](https://knowledge.sobereye.com/es/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Italiano](https://knowledge.sobereye.com/it/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) - [Português - Brasil](https://knowledge.sobereye.com/pt-br/piloto-optovera-understanding-results-q3-dormi-mal-anoche-y-me-siento-cansado-por-que-reci) English Show submenu for translations - Contact us Contact us How can we help you? - There are no suggestions because the search field is empty. 1. [Optovera Knowledge base (en)](https://knowledge.sobereye.com/en?hsLang=en) 2. [Understanding Results](https://knowledge.sobereye.com/en/understanding-results?hsLang=en) # I did not sleep well last night and feel tired. Why did I receive a Within Baseline Range result? ## Within Baseline Range does not rule out tiredness or every degree of fatigue. A Within Baseline Range result does not mean that the User is fully rested or experiencing no fatigue. OPTOVERA is not intended to detect every degree of tiredness or fatigue. OPTOVERA measures the User’s Pupillary Light Reflex (PLR), the involuntary change in pupil diameter in response to changes in light, and compares the response with the User’s individual baseline. A Within Baseline Range result means that no significant alteration in the pupillary response was detected at the time of the Scan. A person may feel tired after sleeping poorly while still being able to recognize and manage that condition. This level of tiredness may not produce a significant alteration in the PLR and may therefore result in Within Baseline Range. As fatigue or another condition becomes more pronounced, its effects may become more difficult to manage safely and may produce a significant alteration in the pupillary response. When OPTOVERA detects such an alteration, the result is displayed as Alteration Detected. OPTOVERA does not determine whether fatigue or any other specific factor caused the result. It provides an objective readiness signal based on the User’s pupillary response. - [Getting Started](https://knowledge.sobereye.com/en/getting-started?hsLang=en) - [Running a Test](https://knowledge.sobereye.com/en/running-a-test?hsLang=en) - [Understanding Results](https://knowledge.sobereye.com/en/understanding-results?hsLang=en) - [Security and IT Requirements](https://knowledge.sobereye.com/en/security-and-it-requirements?hsLang=en) - [Users, Enrollment, and Baseline](https://knowledge.sobereye.com/en/users-enrollment-and-baseline?hsLang=en) - [Device, Software, and Connectivity](https://knowledge.sobereye.com/en/device-software-and-connectivity?hsLang=en) - [Platform Administration](https://knowledge.sobereye.com/en/platform-administration?hsLang=en) - [Safety, Privacy, and Compliance](https://knowledge.sobereye.com/en/safety-privacy-and-compliance?hsLang=en) - [Deployment and Operations](https://knowledge.sobereye.com/en/deployment-and-operations?hsLang=en) - [Troubleshooting Guide](https://knowledge.sobereye.com/en/troubleshooting-guide?hsLang=en) - Home - Products - Pricing - Blog - Company [![sobereye-dark](https://knowledge.sobereye.com/hs-fs/hubfs/sobereye-dark.png?width=300&height=73&name=sobereye-dark.png "sobereye-dark")](https://www.sobereye.com) SOBEREYE INC. 655 Oak Grove Ave. #863 Menlo Park, CA 94025 Tel: +1 408.718.0273 [mailto:contact@sobereye.com](mailto:contact@sobereye.com) Copyright © 2025, sobereye.com