Shooting vision test, recovery, training app on Windows Pc

It is a free app that allows you to test your vision, recover your vision, and train your vision while shooting against the Landolt ring used in your vision test. Visual acuity can be measured by trying to hit as far as possible.The visual angle is calculated from the distance to the hit Landolt ring, and the visual acuity is calculated and displayed using the visual acuity calculation formula (visual acuity = 1 / visual angle).
You can also recover your vision and train your vision by making an effort to identify the approaching Landolt ring.Through training, the orientation of the Landolt ring can be identified from a greater distance.By aiming at a moving Landolt ring, it can also be used to train moving vision.

---App features---
Since it can be used easily even by preschoolers, it is possible to detect abnormalities in children's eyes at an early stage, such as amblyopia.
Easy to use anytime and anywhere.
You can also measure visual acuity such as 1.1, 1.3, and 1.4.
As the STG (shooting game), a lot of data can be collected and averaged quickly, so the measured values are more accurate.This is not possible with a normal vision test using a vision chart.
The visual angle is calculated from the distance to the Landolt ring hit in 3D space, and the visual acuity is calculated and displayed using the visual acuity formula (visual acuity = 1 / visual angle).
Even children can use it while having fun, like a game.
By gradually approaching the Landolt ring, you can see the change in appearance, and as a result of trying to hit farther away, you can train vision that includes the power to estimate what you are looking at.

---How to use the app---
1 Use the smartphone in a normal posture (with the elbows at a right angle).
2 It is recommended to use the smartphone sideways.
3 As soon as you find the correct Landolt ring, tap to fire a missile.
4 Do your best to hit the Landolt ring as far as possible.
5 Even if you don't hit it, it won't affect the measurement result.
6 Hit at least 10 shots and press the end button.

---Precautions (Please use after understanding the following)---
1 The purpose of this app is to make it easy for you to test your vision, restore your vision, and train your vision. We do not guarantee its effectiveness.There are individual differences in effectiveness.
2 Do not use it for a long time so that your eyes do not get tired.If you feel unwell during use or feel any abnormalities in your eyes, stop using it immediately.
3 We do not take any responsibility for any damage caused by using this app.

---Acknowledgments---
This game was made with Unity. Fonts:Google Fonts((C)James Grieshaber,(C)Para Type,SIL Open Font License). Sound Effects:(C)Sound Effect Lab. BGM:(C)Maoudamashii. I sincerely express my gratitude.
(C)Doctor AI

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