Naked-eye 3D vision test pictures are trending on the Internet, and many ophthalmologists are called out by netizens hoping to get professional responses

Recently, a set of naked-eye 3D vision test pictures allegedly containing numbers have been widely circulated on the Internet. Many people have said that they were dazzled and could not see what the numbers were. Some people even made appointments with experts on online consultation platforms to ask for advice. Many ophthalmologists have also been called out by netizens on social platforms in the hope of getting professional responses.

Is it really reliable to test the health of eyes through naked eye 3D test pictures? On May 15, Jimu News reporter interviewed Wuhan experts.

Naked eye 3D image test of eye health is not reliable

Recently, a set of naked-eye 3D vision test pictures allegedly containing numbers went viral online. Many people said that they were dazzled and could not see the numbers on them. Some people even registered with experts on online consultation platforms to ask questions. Many ophthalmologists were also called out by netizens on social platforms in the hope of getting professional responses. "Many ophthalmologists were tagged by netizens to answer questions" quickly became a hot search. Some doctors responded to this, saying that not everyone can see naked-eye 3D, and that certain skills are required. They also hope that everyone will pay attention to protecting their eyes while participating in the event.

Is it really reliable to test eye health through naked eye 3D test pictures? He Yanan, an ophthalmologist at the Yangtze River Shipping General Hospital, said that it is not reliable to test eye health through naked eye 3D test pictures. Although naked eye 3D test pictures can reflect the eye's ability to perceive stereoscopic vision to a certain extent, eye health is a complex concept. In addition to the ability to perceive stereoscopic vision, it also includes vision, refraction, eye structure, fundus condition and other aspects.

Zhou Jingjing, deputy chief physician of strabismus and pediatric ophthalmology at Wuhan University Aier Eye Hospital, said that some test images are used to assist in clinical examinations, such as Amsler grids, color blindness cards, stereoscopic vision test cards, etc. However, the detection of eye health usually requires the assistance of instruments and equipment such as vision chart tests, slit lamps, non-contact tonometers, fundus scopes, ophthalmic AB ultrasound, and ocular surface comprehensive analyzers.

Not everyone can see naked eye 3D

Can everyone see naked-eye 3D? He Yanan specifically pointed out that not everyone can see naked-eye 3D, and whether or not naked-eye 3D can be seen is related to many factors. First, it is related to personal vision problems, such as strabismus, amblyopia, astigmatism, etc. People with vision problems tend to have poor naked-eye 3D perception; secondly, to see three-dimensional stereoscopic images such as naked-eye 3D, you must have depth perception, and some people are born without it; these images usually have certain requirements for viewing angle, distance, light intensity, etc.; in addition, age factors may also play a role, and children and young people may be relatively more likely to perceive it, while with age, visual function may decline, and the ability to perceive naked-eye 3D may also be affected.

Zhou Jingjing added that it is generally difficult for patients with large strabismus to see naked-eye 3D, because naked-eye 3D vision requires binocular coordination and the participation of depth perception. The two eyes of such patients cannot be aimed at the same object, resulting in the inability to merge two separate views into a stereoscopic view. Secondly, depth perception is also the key to naked-eye 3D vision. Since the two eyes of strabismic patients cannot be aimed at the same object at the same time, the brain will automatically ignore the visual information of the strabismic eye and only receive and process the visual information of the emmetropic eye. Therefore, they cannot perceive depth and cannot see naked-eye 3D. Secondly, for patients with severe amblyopia, due to severe damage to visual function, they may not be able to accurately see the 3D effect.

In response to some netizens who said they were "dazzled and couldn't see the numbers above", ophthalmologists said that it is not recommended to stare at the picture for a long time to find the answer, as this may cause damage to the eyes.

Experts give advice on how to maintain eye health scientifically

Some netizens are curious: "Are there any reliable ways to test vision in daily life?" He Yanan suggested that in daily life, we can observe vision by seeing whether distant objects are clear, that is, covering the left and right eyes respectively to feel whether there is a significant difference in the vision of one eye. You can also observe the appearance of the eyes to see if there is congestion, increased secretions, eyelid abnormalities, etc. In addition, you can also test eye health by observing whether the eyeballs are flexible and symmetrical, whether the lights have rainbow-like apertures, and whether the straight lines are bent or deformed.

How to maintain eye health scientifically? Zhou Jingjing suggested that we should start from the following aspects: follow good eye habits, such as avoiding staring at the screen for a long time, resting the eyes regularly, paying attention to maintaining a proper reading distance and posture, and avoiding excessive use of the eyes; avoid rubbing the eyes frequently to avoid damaging the cornea and causing eye infections; regular outdoor activities can help relieve eye fatigue, increase the distance of farsightedness and the ability to adjust to distant views. Try to spend some time in outdoor activities every day to relax your eyes; ensure enough sleep time, good sleep can help recover eye fatigue and improve eye health; have regular eye examinations to detect and treat eye problems early, such as myopia, astigmatism, eye diseases, etc. If you experience discomfort symptoms such as pain, itching, and blurred vision, you should seek medical treatment in time.