To protect your eyes from the dangers of the sun, you should wear well fitted sunglasses, preferably a wraparound style.ġ6. Several eye conditions, such as cataracts and pterygia, have been associated with exposure to UV rays. The sun’s rays have been linked to eye damage. Tobacco smoke is known to irritate eyes - even second hand exposure to the smoke can worsen dry eye, particularly for contact lens wearers.ġ5. Smokers have almost double the chance of experiencing dry eye. Your eyes and nose are connected by cranial nerves, so the stimulation from a sneeze travels up one nerve to the brain, then down another nerve to the eyelids, typically prompting a blink.ġ4. It’s impossible to sneeze with your eyes open. Because the vitreous is completely stagnant, they will remain there indefinitely unless surgically removed.ġ3. They are mainly made up of protein strands floating inside the eye’s vitreous, casting shadows on the retina. The “floaters” in your vision are permanent. This similarity means that sharks’ eyes can be used as replacements in human eye surgeries.ġ2. Human corneas are very similar to a sharks’ cornea. If this happens to you often, you should make sure that you have an up-to-date prescription.ġ1. This is because you blink less often and you are not relaxing the muscle inside your eye. Your eyes become tired when you read or stare at a computer for extended periods of time. These are usually minor and temporary conditions such as blurred vision and dry eyes, and will go away once the child is born.ġ0. While hormones are raging and physical changes are occurring, it is possible for a woman to experience problems with her sight. A woman’s eyesight can be affected by pregnancy. In fact, a well-practised liar will try to overcompensate as an attempt to “prove” they are telling the truth, by making too much eye contact and holding a gaze.ĩ. It’s a myth that liars make less eye contact. However, dilating pupils can also mean you are scared.Ĩ.

For example, when you look at someone you are attracted to, they will expand up to 45%. Any positive thought can serve to dilate your pupils. Rather, it means that you can read a chart from 20 feet away in normal lighting conditions.ħ. Contrary to popular belief, having 20/20 vision isn’t anything remarkable. 20/20 vision just means you have normal eyesight. If your cornea becomes damaged you will experience distorted vision, because the light that enters your eye is interfered with.Ħ. It protects your eyes from dirt and germs, as well as some of the sun’s UV rays. The cornea is the transparent covering of the iris and pupil. It is most often inherited, but may also occur due to disease or injury.ĥ. This condition is known as heterochromia, and is usually the result of a relative lack or excess of pigment in one eye. Some people are born with mismatched eye colours. Eye colour is determined by genetics, because they dictate how much melanin is produced in your iris.Ĥ. With over 55% of the world’s population having brown eyes, it remains the most common colour. The most common eye colour in the world is brown. Scientists estimate that eye first evolved 500 million years ago, originally in a very simple form that could probably only distinguish light from dark.ģ. Eyes first evolved around 500 million years ago. In the same way that a camera lens focuses light onto a photosensitive surface, your eyes focus light onto the retina.Ģ. We’ve put together 51 facts about your eyes that will help you realise just how remarkable they truly are:ġ. They work hard from the minute you wake up to the minute you go back to sleep, constantly taking in information about the world around you. Experiments show that the double-pupil location can not only used for the face images rotated by vertical direction, but also those rotated by both vertical direction and horizontal direction.Photo by Angelos Michalopoulos on Unsplash To testify the performance of the methods for double-pupil location and single-pupil detection, both the face pose image database subset of our laboratory and open head pose image database subset are used. The most optimal pupil candidate is used as the pupil of another unknown eye. A method for single-pupil detection is used for the location to determine whether a pupil appears or not. Both the center of the face region and that of the pupil are used to compute possible location of another unknown pupil. The detected pupil of the single eye is located accurately to reduce the effect of location offset and overlay. This paper presents a novel method for double-pupil location. Usually, the method for face detection and location can only detect a face region and a single eye for a face image with pose variation. Double-pupil location is a premise to face normalization and a key to face recognition.

Double pupil close up