# US 12,108,986 B2 · Method for automatically assessing the near vision accommodative state of a non-presbyopic individual and associated device

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- Number: US 12,108,986 B2
- Document ID: US12108986B2
- Status: Granted
- Kind: B2
- Application number: 17/619,494
- Filed: 2020-06-15
- Published: 2022-12-29
- Granted: 2024-10-08
- Earliest claimed: 2019-06-19
- Assignees: Siview
- Applicants: Siview
- Inventors: Laure Pichereau; Kelly Woog
- Web page: https://patentgrep.com/patent/US12108986B2

## CPC

- A61B 3/09: for testing accommodation
- A61B 3/032: Devices for presenting test symbols or characters, e.g. test chart projectors (A61B3/036 takes precedence)
- A61B 3/04: Trial frames; Sets of lenses for use therewith
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)

## Abstract

A method for automatically assessing the near vision accommodative state of a non-presbyopic individual, the method being carried out by computer and performed after an assessment of the individual's far vision leading to the generation of a far vision assessment report, includes generating a near vision assessment report optionally including at least one recommendation dependent on the far vision assessment report.

## Claims

### Claim 1

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.

### Claim 2 (depends on 1)

The method according to claim 1, wherein the first initial recommendation is to consult an ophthalmologist and/or to perform a near vision assessment on trial glasses.

### Claim 3 (depends on 1)

The method according to claim 1, wherein the second initial recommendation is to perform accommodation training exercises and/or to perform a binocular vision assessment.

### Claim 4 (depends on 1)

The method according to claim 1, wherein the first recommendation is to perform accommodation training exercises.

### Claim 5 (depends on 1)

The method according to claim 1, wherein the second recommendation is to perform a binocular vision assessment.

### Claim 6 (depends on 1)

The method according to claim 1, wherein the third recommendation is to suggest an addition with a weak correction value.

### Claim 7 (depends on 1)

The method according to claim 1, wherein the fourth recommendation is to suggest an addition having the intermediate correction value.

### Claim 8 (depends on 1)

The method according to claim 1, wherein the fifth recommendation is to suggest an addition having the strong correction value.

### Claim 9 (depends on 1)

A device for assessing the near vision accommodative state of a non-presbyopic individual for implementing the method according to claim 1, including:
a display configured to display at least one optotype at a fixed distance from the individual's eyes and to display at least one selection suggestion and/or symbol;
placement means configured to place optical lenses in front of the individual's eyes; and
a storage memory;
a calculator;
selection means configured to select a selection suggestion and/or symbol.

### Claim 10 (depends on 1)

A non-transitory computer readable medium comprising machine readable instructions which, when the instructions are executed on a computer, cause the computer to implement the steps of the method according to claim 1.
