Understanding Vision

Excellent care and brilliant outcome from the professional and friendly experts at Advanced Vision Care.
Susan Hutcheson

Understanding vision is what we do at AVC.

Sight is extremely important and visual impairments of any degree can have drastic effects on your life. Glasses and contact lenses are a temporary solution often not allowing for use during most activities, consequently restricting lifestyles. Vision correction treatment is a permanent solution that can free you from your dependency on glasses and contact lenses.

At AVC we are devoted to patient care and outstanding results and have the country’s most advanced laser and non-laser surgical theatres. We are not just a laser clinic, we offer total vision correction. This enables us to treat patients of all ages with a variety treatments that correct a wide range of prescriptions.

Laser – For individuals over the age of 18 and there is no upper age limit. Treats short and long sight with or without astigmatisms. For those over the age of 40, Monovision laser can treat both distance and near vision simultaneously.

Implantable Contact Lens – For individuals aged 40 years old or younger with high prescriptions, complex astigmatisms or are found unsuitable for laser surgery.

Cataracts and Clear Lens Exchange – For individuals over the age of 45 and have developed a cataract or a reading prescription. Multifocal and Trifocal lenses simultaneously treat all fields of vision (distance, near and intermediate).

As experts in sight, we want to help you better understand your vision and why you require visual aids.

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Understanding Vision: A Short Guide

When looking at an object, the light reflecting from it enters the eye. This light enters the eye through the cornea which is the clear layer of tissue in front of the eye. The cornea bends the light and passes through the iris, which changes the size of the pupil depending on the brightness of the light.

Once through the pupil, the light will enter the lens which focuses the light through the vitreous humour on to the retina wall. The retina’s surface comprises of photoreceptors (light sensitive neurons) that translate the light signal into an electric one and sends the information along the optic nerve to the brain.

In a normal eye, the cornea and crystalline lens focus the light exactly on to a small area of the retina, producing a sharp image.

understanding vision - eye diagram

  • AVC provide total vision correction and provide laser and non-laser treatments.
  • 1 in 3 people in the UK have myopia.
  • Approximately 13% of British people aged between 20 and 25 years have hyperopia.
  • Approximately 9 out of 10 people have some degree of astigmatism.
  • AVC provide total vision correction and provide laser and non-laser treatments.
  • Everyone over the age of 45 will develop presbyopia.
  • Wearing contact lenses for extended periods of time can permanently damage eyes.
  • As the eye ages often people need two pairs of glasses.

Myopia - Short/Near sighted

Short/Near sighted (Myopia)

This is when distant objects are blurred but close objects are clear.

This is caused by the eye being longer than normal or a steep cornea. When the light passes through the eye, the steep cornea or the elongation of the eye causes the light to fall short of the retina and causes the light rays to cross each other producing a blurred image.

Hyperopia - Long/Far sighted

Long/Far sighted (Hyperopia)

This is when close objects are blurred and distant objects are blurry.

This can be caused  by the cornea being flat, the lens not being thick enough or, most commonly, the eye being shorter than normal. When the light passes through the eye the light trajectory goes beyond the retina producing a blurred image.

Astigmatism

Astigmatism

This is when objects are blurry for both distance and close ranges.

This can be caused by the irregular shape of the cornea or lens.

However it is most commonly due to the eye being more like a rugby ball shape rather than a football, consequently distorting the path of the light. This shape causes the light to scatter, leading to a blurry image and is often accompanied by myopia or hyperopia.

Treating Myopia:

Corrective lenses – glasses (concave lens) and contact lenses.

Laser vision correction – The cornea is flattened to enable the light to reach the retina.

Implantable Contact Lenses – The lenses works like corrective lenses but are situated inside the eye.

Clear Lens Exchange – The crystalline lens of the eye is replaced with an artificial lens that alters the path of the light enabling it to reach the retina.

Treating Hyperopia:

Corrective lenses – glasses (convex lens) and contact lenses.

Laser vision correction – The cornea is curved to enable the light to reach the retina.

Implantable Contact Lenses – The lenses works like corrective lenses but are situated inside the eye.

Clear Lens Exchange – The crystalline lens of the eye is replaced with an artificial lens that alters the path of the light enabling it to reach the retina.

Treating Astigmatisms:

Corrective lenses – glasses (irregular shaped) and toric contact lenses

Laser vision correction – The cornea made more symmetrical enabling the light to reach the retina.

Implantable Contact Lenses – The lenses works like corrective contact lenses but are situated inside the eye.

Clear Lens Exchange – The natural lens of the eye is replaced with an artificial lens that alters the path of the light enabling it to reach the retina irrelevant of the presence of an astigmatism.

presbyopia

Presbyopia

This is when close objects become blurry.

As the eye ages, the crystalline lens stiffens and becomes less elastic. As the light passes through the eye, the lens is no longer able to adjust and focus the light on to the retina, causing it to focus beyond the retina producing a blurred image.

This will eventually happen to everyone over the age of 40, causing a need for reading glasses irrelevant of having used glasses or contact lenses in the past. Even people that have hyperopia (long sighted) will still experience the loss of near vision caused by presbyopia.

Treating Presbyopia:

Corrective lenses – Varifocals or two pairs of glasses and contact lenses (one to correct distance and the other for near vision)

Laser vision correction – Correct distance vision, leaving a reading prescription or Monovision laser correction (one eye corrected for distance and the other for reading).

Clear Lens Exchange – The crystalline lens of the eye is replaced with an artificial lens. Multifocal and Trifocal lenses allow for complete correction of a prescription simultaneously fixing distance, intermediate and near vision.

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Why choose Advanced Vision Care?

  • UK’s leading independent vision correction clinic.
  • Provide total vision correction, offering laser and non-laser treatments.
  • Every treatment is bespoke and customised to each individual’s specific visual parameters and requirements, ensuring optimum visual quality.
  • Completely independent clinic with no affiliation with manufacturers or consultants, allowing us to offer the best treatment for every patient.
  • Our surgical team comprises of the industry’s most experienced and respected surgeons in their fields, with a combined experience of over 75 years. They are pioneers in the industry and trainers.
  • Honest and transparent pricing.
  • We offer total vision rehabilitation for all ages, with our laser and non-laser treatments.
  • We provide all our patients with unrivalled results and outstanding care, constantly surpassing expectations.
  • Nationwide independent optometrist network gives our patients the choice to have their aftercare check-ups closer to home.
  • UK and Ireland’s leading provider of ICLs and Multifocal IOLs.

Private Insurance

Now more people than ever can have the world class treatment with Advanced Vision Care on Harley Street. Our pricing is not only transparent but we have ensured that there are several ways to fund treatment so that no one has to compromise on quality of care, standards or technology.

At AVC we offer interest free finance plans to help spread the cost and we have partnered with the UK’s leading insurance providers to make Harley Street quality available for more people. We have also been approved by the National Health Service meaning patients will be able to receive treatment with us through the new e-referral system at no extra cost.

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