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Visual Acuity Charts - Detect Myopia2.1 b50 (Paid)

Visual Acuity Charts - Detect Myopia v2.1 b50 (Paid)

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Visual Acuity Charts - Detect Myopia / Specifications

Visual Acuity Charts - Detect Myopia / Screenshots

Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)
Loading... Visual Acuity Charts - Detect Myopia 2.1 b50 (Paid)

Visual Acuity Charts - Detect Myopia / Video Trailer or Demo

Visual Acuity Charts - Detect Myopia / Description

Prevention is better than cure while myopia is incurable. Designed for children older than 6 parents with young children and general practitioners this app displays optically precise optotypes of eye charts for you to detect nearsightedness or myopia accurately and early.

Supported Eye Charts:
1. Snellen Chart with C D E F H K N P R U V and Z as defined in BS 4274-1:2003
2. Tumbling E Chart
3. Landolt C Chart
4. ETDRS Chart with C D H K N O R S V and Z
5. HOTV Chart
6. ETDRS European-wide Chart with H K O E P X B T M and A
7. LEA Symbols for preschool-age children
8. Numbers

Predefined Test Distances:
* 6 5 4 3 and 2 meters
* 20 15 12 10 6 feet

At exactly 6 meters away from the patient the optotypes on the 6/6 line (Decimal 1.0 or LogMar 0.0) shall subtend 5 minutes of arc which means that the chart should be sized such that these optotypes are 8.73mm tall and the topmost (Snellen Fraction 6/60 Decimal 0.1 or LogMar 1.0) optotypes should be 87.3 mm tall. At exactly 20 feet away from the patient the topmost optotypes should be 88.7 mm tall because 20 feet equals 6.096 meters.

Scenarios:
1. "Doctor" and "Patient".
2. Self-diagnosis with a mirror.
3. Self-diagnosis within arm's reach

Notations:
1. Decimal (0.50)
2. Fraction (20/40)
3. LogMAR (0.30)
4. Fraction (5/10)
5. Fraction (6/12)
6. MAR (2)
7. VAS or VAR (85)

All charts in any VA notation follow the LogMAR design recommended by the International Council of Ophthalmology (ICO) to address design flaws in original Snellen chart.

Test Modes:
1. Autoplay
2. Manual

In Autoplay the app calculates the score. For LogMAR notation the score is (LogMAR value of the best line read) + 0.02 x (number of optotypes missed). And the maximum missed is 3. For VAS notation the score is an inversion of the logMAR scale based on VAS=100-50xlogMAR. For other notations the score is the notation value of the best line read and optionally minus number of optotypes missed and the maximum missed is 2.

By default setting "Play Interval Until Next Optotype" is none. Available intervals in second: 2 4 6 8 and 10. If the "patient" could not recognize the optotype within the interval this counts a miss.

Through enabling Record Scores in Settings you can keep track of the progression of your visual acuity. Visual acuity scores of multiple testees could be recorded. Visual Acuity Score (VAS) is an inversion of the logMAR scale based on VAS=100-50xlogMAR. It is more intuitive since higher values indicate better visual acuity.
In the scores review score 100 in blue indicates the reference standard scores above 100 in green indicates no myopia while scores below 100 in red may indicate myopia.

Disclaimer:
While this app may replace Snellen Chart E-Chart C-Chart ETDRS Charts and HOTV Chart in print it cannot replace doctors and optometrists who carry out comprehensive tests for your eyes. Please visit optometrists regularly and seek help from medical professional at early signs of visual acuity problems.

Hints:
Rather than taking eye exams annually you can check your visual acuity frequently with this app. For example if you have young children to take care of you may test their visual acuity monthly fortnightly or weekly so you can take preventive measures and seek help from medical professional early to prevent pseudomyopia from becoming myopia or prevent nearsightedness from getting worse.

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Visual Acuity Charts - Detect Myopia / What's New in v2.1 b50 (Paid)

Improved the hint and help system.

Choose Download Locations for Visual Acuity Charts - Detect Myopia v2.1 b50 (Paid)


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