test

SCROLL DOWN

Creepy crawlies surprise us with their super vision

Learn more about vision correction

08
Sep
2017

It’s not our fly-swatting skills, insects vision is much better than we thought!

Ever wondered why the flies stuck in your home seem to be so good at avoiding your deadly swatter or rolled up newspaper? For years, scientists have not been able to answer this question, believing that insects vision was pretty blurry, leaving them unable to look at finer images.  Recent research sheds new light on these little creatures and their ability to view surprisingly high-resolution images.

Insect Eyes vs Human Eyes

Here are some comparisons between the human and insect lens, impacting how they view objects:

Insects…

  • Have something called compound eyes.  This means they have thousands of tiny lens-capped ‘eye-units’, which were believed to capture a low-resolution pixelated image of the surrounding world. In other words, blurry.
  • This is the net-like feature, which we associate with their eyes

insect eye

Humans…

  • Eyes differ completely, having just one large lens which gets bigger and smaller as it focuses on a point of interest depending on the amount of light available
  • This change in lens shape allows us to keep an object in sharp focus whether close or far away
  • In addition, our retinal photoreception (the megapixel “camera chip” in the eye) underneath our large lens is densely packed, allowing us to see high-resolution images

Whilst humans retinal photoreception underneath the lens is dense, in insects it is sparse.  This, along with the other crucial differences mentioned above help us to understand why we were fooled into thinking insects vision was poor vision for all these years!

So what have we been missing?

Researchers from The University of Sheffield have made a huge breakthrough in their studies of insect eyes this September!  Whilst we always thought the lack of photoreceptor cells underneath the lenses of an insect eyes caused poor eyesight, we have now learnt that this is not the case.

Why is that?  

Well, new research has shown that these cells are able to move quickly and naturally in and out of focus as they view an image of the world around them. This happens at such a fast rate that we could not possibly see it with our naked eye.  This is called microscopic light-sensor “twitching” .

This movement is natural for insects, correlating with their head/eye movements, as they view the world in saccadic bursts (a quick, simultaneous movement of both eyes between two or more phases of fixation in the same direction).

Mikko Juusola, Professor of Systems Neuroscience at the University of Sheffield and lead author of the study, says

“all animals with good vision, irrespective of their eye shape or design, see the world through fast saccadic eye movements and gaze fixations.’

Humans are included in this, and this research completely changes our former understandings of insects vision.

Next time an unwanted fly visits your home, don’t be disheartened when you can’t seem to shoo it away.  They can see a lot more than we thought.

As for spiders, despite most having a whopping eight eyes, their eyesight generally is relatively poor…so there are really no excuses.

Sources

http://home.bt.com/news/science-news/it-turns-out-insects-have-pretty-good-eyesight-after-all-11364209845566

https://www.sheffield.ac.uk/news/nr/insects-can-see-better-than-scientists-thought-1.727290

http://www.improveeyesighthq.com/spider-vision.html

If you are interested in vision correction at Focus Clinics please call us on 0207 307 8250 to book a free consultation.

By: David

If you are interested in vision correction at Focus Clinic please call us on 0207 307 8250 and book a free consultation.

Book your FREE consultation
Related Articles
  • high cholesterol

    High cholesterol: Did you know it can damage your vision?

    Most people are aware that high cholesterol causes health issues, but many aren’t aware of the impact high cholesterol can have on your vision.

    Learn more
  • night vision

    The reason why our ability to see at night goes back to evolution

    The cavemen days were a long, long time ago, but human bodily behaviour in the 21st century is still proving to have qualities that originate back to this period. One of these aspects, is our night vision abilities. New research conducted by Goethe University, Frankfurt, Germany, studied the brains of 14 males across six different […]

    Learn more
  • superfood can stop you going blind

    The secret superfood that could stop you going blind

    We are a nation of coffee drinkers. In fact, in the UK alone we drink approximately 55 million cups of coffee every day. Thousands of studies have looked at coffee use in the past few decades and lately, more and more are reporting the real health benefits for coffee drinkers, from helping prevent diabetes, to […]

    Learn more
  • floaters

    What are eye floaters & are they a concern?

    Most of us have seen strange shapes floating in our vision from time to time and those tiny spots, specks and flecks that drift aimlessly around our field of vision are otherwise known as floaters. What are floaters? Floaters are caused by small piece of debris that float in the vitreous humour of the eye. […]

    Learn more
  • how to accentuate your eye colour

    Revealed: common causes of eye twitches

    Eye twitching is pretty common. A twitch usually occurs in the upper lid, but it can occur in both the upper and lower lids. For most people, eye twitches are harmless and will just come and go, but for others, eye twitches can last for weeks or even months and that’s when an eye twitch […]

    Learn more
  • blind people

    A blind world: Number of blind people could half with sight-saving surgery

    There are approximately 39 million blind people in the world. But did you know that more than half of them needn’t be blind? Their blindness is curable if they could only get the sight-saving surgery they need. Here at Focus, we want to raise awareness of world blindness. Using International Council of Ophthalmology data we have […]

    Learn more
  • 1920--1200

    What happens if I blink during laser eye surgery?

    The idea of having laser surgery can be a frightening thought. One of the most common concerns that we hear is whether you will be able to keep your eyes open for long enough, and then what happens if you blink? We would like to take this time to give you some reassurance. We all […]

    Learn more
  • Child with colourful eye patch

    5 Top Eye Patching Tips for Parents

    As part of children’s eye health and safety month, we want to provide some helpful tips for parents about patching their child’s eye for certain eye conditions.

    Learn more
  • What are the Chances of an Infection After Laser

    What are the chances of an infection after laser eye surgery?

    Have you ever wondered what the likelihood of an infection is after laser vision correction?  In a study released by the Journal of Cataract & Refractive Surgery (JCRS) the risk of infectious keratitis in the eyes after laser vision correction was analysed. What is microbial keratitis? The condition is caused when the cornea, the clear, […]

    Learn more
  • Can you spot the robin perched in this herd of reindeer?

    Can you spot the robin perched in this herd of reindeer?

    The holidays are coming and what better way to get in the festive spirit than with an eye-boggling brain teaser. Can you spot the Robin? With the biggest Christmas adverts of the year now released spreading festive cheer across the country, we have come up with this eye-boggling brain teaser that asks challengers to to spot […]

    Learn more
  • Eye-Inspired Architecture: The L’Hemisfèric

    Eye-Inspired Architecture: The L’Hemisfèric

    The L’Hemisfèric is a spectacular building located in Valencia, Spain. Designed by Santiago Calatrava and opened in 1998, this unique piece of architecture is a Planetarium for viewing the night sky and a Laserium to showcase light displays, it also houses an IMAX Cinema. What makes this building unique? It’s shaped like an eye and […]

    Learn more
  • Hay Fever

    Hay Fever: Preventing Itchy Eyes

    Spring days are nigh, and for many of us, with the increasing pollen count, Hay Fever is looming. The oncoming bouts of itchy eyes and a runny nose fill sufferers with dread, so what would be better than to prepare for, and possibly eliminate, these symptoms before pollen terrorises them for foreseeable sunny days? It […]

    Learn more
  • Woman glasses

    Do you take your glasses off before taking a selfie?

    Recent Focus Clinic research reveals that over half of all glasses-wearing women refuse to pose for a ‘selfie’ until they’ve taken off their specs first. The recent research suggests there’s still a negative stigma attached to wearing spectacles. Despite the fact that around 69 percent of all Brits wear corrective eyewear, many appear to want to […]

    Learn more
  • dark chocolate vision

    Need an excuse to eat chocolate? It’s good for your eyes

    With the Easter weekend only just over, there might be a few of us that are feeling a little guilty about the amount of chocolate we have eaten. But did you know that dark chocolate is actually good for our vision and can protect us from a number of diseases in our eyes? You probably […]

    Learn more
  • woman watching tv

    TV Shows of 2017: What takes the crown as most watched?

    With blue Monday just a few days ago and many of us still in the throws of January blues, some of us may be looking back and reflecting on the year just gone. This time of year we see programmes crop up that look back at the highs and lows of 2017, and here at […]

    Learn more
  • Why uncontrolled diabetes can lead to serious eye problems

    Why uncontrolled diabetes can lead to serious eye problems

    Did you know nearly one person in every 25 in the UK has diabetes? It can take time to get your diabetes under control, but the results are worth it – otherwise you could set yourself up for a host of complications. Diabetes can take a toll on nearly every organ in your body, and […]

    Learn more
  • contact lens problems

    Contact lens problems and how to fix them

    Serious problems with contact lenses are thankfully rare. However they can crop up when the recommended hygiene procedures aren’t adhered to, or when contact lenses are not ordered through a registered optician.

    Learn more
  • myopia epidemic

    The Myopia Epidemic Across The World: Which countries suffer the most and least?

    Over 80 million children are affected by the myopia epidemic and the economic cost is estimated at an annual $268 billion worldwide. What is myopia? Myopia, also known as nearsightedness, is a refractive error in your eye.  This means that the eye does not refract light properly to a single focus, which enabled you to […]

    Learn more
  • what is astigmatism

    Smoking Yourself Blind

    It’s common knowledge that smoking is heavily linked to cancer and respiratory problems. What a lot of smokers don’t realise is that smoking is also linked to various eye conditions.

    Learn more
  • 15 foods that can improve your eye health

    15 Foods That Can Improve Your Eye Health

    Did you know eating certain foods can actually improve your eyesight, slow down aging of your eyes and keep your eyes in good health?

    Learn more
  • refractive lens exchange

    Refractive lens exchange cost

    The typical Refractive Lens Exchange cost is £5400 for complete treatment to both eyes, using a standard monofocal lens. This includes your FREE initial consultation and all post surgery appointments and eye drops. If you are found suitable at your initial assessment, a second consultation with your treating surgeon will be arranged and costs £100.

    Learn more
  • english views

    The Best of English Views

    Here at Focus Clinics, we have collaborated with photographers from all over England to put together a photographic journal that showcases the Best of English Views today; in focus. From Yorkshire to Essex, and Norfolk to Cornwall, we asked each of the photographers to contribute an image of the landscape from their county that they […]

    Learn more
  • novelty contacts

    Novelty contacts this Halloween: trick or treat?

    Novelty contacts are extremely popular around this time of year and whilst we all want to have the scariest Halloween costume, it is not worth risking your vision by misusing these special-effects lenses. What are novelty contact lenses? Did you need a prescription to wear novelty contact lenses? If you are thinking about wearing novelty […]

    Learn more
  • shutterstock_175095980

    The epidemic outbreak of Acanthamoeba keratitis

    Acanthamoeba keratitis is a rare, but serious vision threatening parasitic infection seen most often in contact lens wearers. First recognised in 1973, Acanthamoeba are naturally occurring amoeba (tiny, one-celled animals) commonly found in water sources, such as tap water, well water, hot tubs, and soil and sewage systems. If these tiny parasites infect the eye, […]

    Learn more
  • Does LASIK wear off?

    Does LASIK wear off?

    Does LASIK wear off? What do we know about long-term effects of LASIK? It’s been around 25 years – is that really enough time to discern long-term effects? Yes, it would appear so. There are rare changes that have been observed up to 2 years after treatment (and which are treatable), otherwise we haven’t seen any other effects, […]

    Learn more
  • Improve your eye health with simple exercises

    Exercises to improve your eye health

    Do you suffer from eyestrain, blurred vision, headaches, increased sensitivity to bright light, tired eyes or difficulty sustaining attention? When your eyes get tired but still have some work to do, you can do a number of eye exercises to help improve your eyesight and take the strain away. Our eyes need regular exercise in […]

    Learn more
  • smoking cigarettes

    Stop smoking cigarettes and save your sight

    It’s common knowledge that smoking cigarettes significantly reduces your health, harms almost every organ in your body, causes a variety of diseases and takes years off of your life. With 7.2  million adults in England that smoke and a staggering 14.6 million ex-smokers, this deadly habit is most commonly known to lead to heart disease, […]

    Learn more
  • eye tattoo, is it worth risking your vision

    Beauty is pain, but is it worth risking your vision?

    A 24 year old Canadian model has recently had an eye tattoo which has left her partially blind. And that’s not the only scar of scleral tattoo. Catt Gallinger herself has said that she’s made a ‘massive mistake’ as it affects her mental health. Have body modifications gone one step too far as people begin […]

    Learn more
  • pros and cons of laser eye surgery

    Pros and cons of laser eye surgery

    Pros and cons of laser eye surgery Despite the procedure being more than 25 years old, laser eye surgery is still regarded as a relatively new operation. The pros and cons of laser eye surgery can help a prospective patient decide if vision correction is right for them. Benefits and risks of vision correction It […]

    Learn more
  • Eyes are a focus at Glastonbury Festival

    Eyes are a Focus at Glorious Glastonbury

    The Royal National Institute of Blind People (RNIB) is encouraging music lovers to make sure they take care of their eye health and remember to book eye tests by putting their vision to the test. RNIB is the official health charity partner for this year’s iconic Glastonbury Festival, here at Focus we fully support the […]

    Learn more
Get in touch
Thank you for getting in touch with Focus. Your message is on its way and one of our friendly team will be in touch shortly!
Reviews

Matt

14th May

matt

‘Years of being unable to see the wall are over!’

close
close
big close

Book a free* consultation

There is a refundable admin fee of £25 for consultations during the week and £50 for consultations in the weekend. This will be returned to you when you attend the appointment.
Thank you for getting in touch with Focus. Your message is on its way and one of our friendly team will be in touch shortly!

Would you rather speak to someone?

*Opening Times:
Monday - Friday: 9am – 6pm Saturday: 9am – 3pm

Would you rather speak to someone?

Call: 0207 307 8250

to arrange your free* consultation
There is a refundable admin fee of £25 for consultations during the week and £50 for consultations in the weekend. This will be returned to you when you attend the appointment.
Mr Samer Hamada
laser and lens eye surgery specialist
 Samar Hamada