Method for automatically assessing the near vision accommodative state of a non-presbyopic individual and associated device

A method for automatically assessing the near vision accommodative state of a non-presbyopic individual, the method being performed after an assessment of the individual's far vision has led to the preparation of a far vision assessment report, the method comprising the following steps performed in order:

• placing at least one optotype at a fixed distance from the individual's eyes;
• if the individual fails to read the optotype, interrupting the method and generating a near vision assessment report including a first initial recommendation;
• placing an initial convex lens with a value within a range [+0.50;
• +1.00] dioptres in front of the individual's eyes:
• if the individual prefers without the initial lens rather than with the initial lens, interrupting the method and generating a near vision assessment report including a second initial recommendation;
• if the individual can see no difference with or without the initial lens, removing the initial lens:
• if the individual has an adaptation time to see clearly again after removing the initial lens, placing the initial lens;
• otherwise:
• if the far vision assessment report does not advise a near vision assessment, interrupting the method and generating a near vision assessment report;
• otherwise, placing the initial lens;
• placing a first convex lens with a value within the range [+0.50;
• +1.00] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the first lens, interrupting the method and generating a near vision assessment report including a first recommendation;
• placing a second convex lens with a value within the range [+0.50;
• +1.00] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the second lens, interrupting the method and generating a near vision assessment report including a first recommendation;
• placing a third convex lens with a value within a range [+0.25;
• +0.50] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the third lens, interrupting the method and generating a near vision assessment report including a first recommendation;
• placing a fourth convex lens with a value within the range [+0.25;
• +0.50] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the fourth lens and:
• if the far vision assessment report does not advise a near vision assessment, interrupting the method and generating a near vision assessment report;
• otherwise, interrupting the method and generating a near vision assessment report including a second recommendation;
• placing a fifth convex lens with a value within the range [+0.25;
• +0.50] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the fifth lens and:
• if the far vision assessment report does not advise a near vision assessment, interrupting the method and generating a near vision assessment report;
• otherwise, interrupting the method and generating a near vision assessment report including a third recommendation;
• placing a sixth convex lens with a value within the range [+0.25;
• +0.50] dioptres in front of the individual's eyes:
• if the individual has blurred vision after placing the sixth lens and:
• if the far vision assessment report does not advise a near vision assessment, interrupting the method and generating a near vision assessment report;
• otherwise, interrupting the method and generating a near vision assessment report including a third recommendation;
• otherwise:
• removing the initial lens and the first, second, third, fourth, fifth and sixth lenses;
• placing a first final convex lens of intermediate correction in front of the individual's eyes and then removing the first final lens and placing a second final convex lens of strong correction in front of the individual's eyes:
• if the individual prefers the first final lens to the second final lens or if the individual can see no difference between the first and second final lenses, generating a near vision assessment report including a fourth recommendation;
• otherwise, generating a near vision assessment report including a fifth recommendation.