Tear film stability assessment with integrated graphical representation

A system for assessing tear film stability of an ocular surface, the system comprising:

• one or more imaging assemblies adapted to respectively obtain tear film breakup time data and a blink time series for the ocular surface;
• a controller having a processor and tangible, non-transitory memory on which instructions are recorded, the controller being configured to:
• convert the tear film breakup time data to a tear film breakup map represented as a polar data array such that respective elements in the polar data array represents a local tear film breakup time at a respective radial and angular location;
• convert the blink time series to an interblink interval map such that the respective elements in the interblink interval map represent an interblink time interval at different blink completeness levels;
• integrate the tear film breakup map with the interblink interval map to generate a tear film stability map, including calculating a stability index for respective pixels in the tear film stability map;
• and
• direct a remedial action when at least one enabling condition related to the tear film stability map is met.

A system for assessing tear film stability of an ocular surface, the system comprising:

• one or more imaging assemblies adapted to respectively obtain tear film breakup time data and a blink time series for the ocular surface;
• a controller having a processor and tangible, non-transitory memory on which instructions are recorded, the controller being configured to:
• convert the tear film breakup time data to a tear film breakup map represented as a polar data array such that respective elements in the polar data array represents a local tear film breakup time at a respective radial and angular location;
• convert the blink time series to an interblink interval map such that the respective elements in the interblink interval map represent an interblink time interval at different blink completeness levels;
• match a respective scale of the interblink interval map and the tear film breakup map, the interblink interval map and the tear film breakup map having a respective corneal apex position;
• align the interblink interval map and the tear film breakup map based on the respective corneal apex position;
• integrate the tear film breakup map with the interblink interval map to generate a tear film stability map, including calculating a stability index for respective pixels in the tear film stability map;
• and
• direct a remedial action when at least one enabling condition related to the tear film stability map is met, the remedial action including a therapeutic treatment for dry eyes and/or a screening for advanced intraocular lens implantation.