How to use the simulated eye for imaging practiceThank you!

The pull-out barrel behind the simulated eye has a scale display scale. However, some are not necessarily very precise, which is something to be aware of.

Hello, if there is a plus sign in front, if it is an elderly person, this is the degree caused by presbyopia, the minus sign is myopia, and there is a plus sign behind the minus sign, which is a symptom of astigmatism.

This is a simulation of looking at the refraction power, so the examination is only an approximate value, only the audition can find the right power.

It is recommended to visit some large eyewear markets, both in Beijing and Shanghai.

Your imaging level is still good, it turns out that your vision can't be improved because the prescription is not accurate, which is very in line with the principle of amblyopia.

Simulated eye examination of myopia. One meter away from the simulated eye, there may be three ways of shadow movement in the myopia state. Progressive: the following myopia;Neutralization: myopia;Reversal: myopia above.

The imaging conditions are as smooth as possible.

Adjust the analog eye scale to. Shake the scope of the scope, each meridian is smooth, reflecting the light and moving quickly. Simulate the addition of + in front of the eye is neutralized, and + appears inverse.

is the neutralization point. After the addition of artificial myopia, the simulated eye is. The ophthalmoscope is shaken 10 times along each meridian to repeatedly experience the elements of shadow movement.

Adjust the analog barrel scale to. The scope should be neutralized in the direction of each meridian when the scope of the ophthalmoscope is shaken along each meridian. At this time, there is only light and no shadow.

Add + for inversion;Add as a smooth. The refractive error of this eye is calculated as 0+ (. The image inspection of the neutralization point should be repeatedly figured out by beginner and memorized.

Set the simulated barrel scale to ;, and then add + standard lenses to the lens slot in front of you, that is, the analog visual acuity. The scope is shaken 10 times per meridian along the meridian of the simulated eye. Compare the shadow velocity, brightness and shape of the light at three different scales of the simulated eye.

It should be the speed of the shadow: >> brightness: >>

Digestion of inversion.

1) Simulate the eye scale. The shaking ophthalmoscope has the following characteristics: inverse, fast shadow speed, bright reflection, and garden.

Indicates digestion with a low-grade negative spherical scope. For the first piece, there is a smooth movement, retreat to neutralization, and then bend or retreat sharply to the reverse movement. Proof of neutralization point buried bridge is.

The calculated analog vision is:

2) Simulate the eye scale. Shake the ophthalmoscope for each meridian to check the image. It is found that the reverse movement, the shadow speed is slower, and the light is darker.

Indicates higher luminosity. For the first digestion lens. Then shake the scope to make the shadow move quickly and reflect the light.

Continue to replace the lenses until neutralized. The analog vision is:

3) Analog eyeglass tube scale plus +. Makes the simulated eye state. Shake the ophthalmoscope to check the shadow movement in each meridian direction.

It was found that the light was very dim, and the shadow movement was so slow that it was almost impossible to make out the shadow movement. Carefully identify it as a reversal. The banded ophthalmoscope lowers the sleeve to the lowest position, which can be seen to be clearly smooth.

This is typical of high myopia. The first digestion lens is used. Under the ophthalmoscope, the reflection suddenly brightened, and the shadow movement speed was faster, but it was already smooth.

Revert to the neutralization point. The vision should be. The influence of these three conditions is very common in clinical practice.

Beginner group boys need to train repeatedly and figure out carefully in order to master the skills.

The slower the shadow shakes, the higher the diopter.

The light field acquisition technology can simulate the human group to observe the world, and the 4D light field data it captures can bring more valuable input information to artificial intelligence than the traditional 2D data. Which shed asked the next stacked realm number Li or Zezi company, they are doing research in this area.

Artificial Intelligence, Computer Graphics, and Sensors.