Cataract detection with an auto-refractometer

A method for early identification of cataracts in a patient based on spot pattern intensity, the method comprising:

• a. providing an auto-refractometer (110) comprising:
• i. a Shack-Hartman sensor (111), and
• ii. an intensity detector (112);
• b. providing a computing device (120);
• c. measuring, by the Shack-Hartman sensor (111), a spot pattern from an eye of the patient;
• d. measuring, by the intensity detector (112), an intensity homogeneity value of the spot pattern;
• and
• e. detecting, by the computing device (120), a cataract in the eye of the patient based on the intensity homogeneity value;
• wherein the computing device (120) detects the cataract if the intensity homogeneity ratio is below a threshold value.

A system (100) for early identification of cataracts in a patient based on spot pattern intensity, the system (100) comprising:

• a. an auto-refractometer (110) comprising:
• i. a Shack-Hartman sensor (111), and
• ii. an intensity detector (112);
• and
• b. a computing device (120) communicatively coupled to the auto-refractometer (110), comprising a processor capable of executing computer-readable instructions, and a memory component comprising computer-readable instructions for:
• i. measuring, by the Shack-Hartman sensor (111), a spot pattern from an eye of the patient;
• ii. measuring, by the intensity detector (112), an intensity homogeneity value of the spot pattern;
• iii. calculating, by the intensity detector (112), a signal-to-noise ratio based on the intensity homogeneity value;
• and
• iv. detecting, by the computing device (120), a cataract in the eye of the patient based on the intensity homogeneity value and the signal-to-noise ratio;
• wherein the computing device (120) detects the cataract if the intensity homogeneity ratio is below a threshold value.