How Your Vision Works

How it works


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 retinal 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.

Most Common Visual Conditions


See below the most common visual conditions:

Myopia

Short-sightedness occurs when the eyeball is too long. This causes light rays entering through the front of the eye to focus in front of the retina, rather than on it. It can also be due an abnormally shaped cornea or lens compared to the length of the eyeball.

Myopia

Hyperopia

Long-sightedness occurs when the eyeball is too small. This causes light rays entering through the front of the eye to focus behind the retina, instead of on it. It can also be due to the cornea or lens curving abnormally compared to the length of the eyeball.

Hyperopia

Astigmatism

This is caused by the light being bent incorrectly by a misshapen cornea, which is rugby ball shaped instead of spherical. This causes a distorted and blurred image, often characterised by ‘ghosting’ especially when looking at letters on a screen.

Astigmatism

Presbyopia

Presbyopia is part of the eye’s natural ageing process. It happens because the lens inside the eye (crystalline lens) starts to become less flexible and elastic with age.

Presbyopia

"They [AVC] could not have been more helpful. As we know, this isn’t always the case with after-sales care but Dr Pillai’s team were very welcoming and he explained how a tiny adjustment was needed via a further operation, which he promptly carried out at no cost. His approach, and the professionalism of all his team at Advanced Vision Care, is absolutely first class, and I would have no hesitation in recommending him. He is certainly a man of his word."

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Rowland C

"Very reassuring, lots of opportunities to ask questions, and all staff friendly and professional."

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Frances R

"Amazing service ! I had lasik treatment and I have 20/20 vision I wish I had done it a long time ago the staff are Professional and the follow up after surgery was second to none I would recommend this company to everybody I know."

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Lisa W

"I am very pleased with receiving my vision to see things clearly. For example, to distinguish different Colours and Driving at nights without Glasses. Thank You."

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Hardat P

"The care given was absolutely fabulous from start to finish. Staff were caring, patient and reassuring. I would recommend AVC to anyone considering this procedure."

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Miriam

"I am extremely happy with the results of my treatment and would have no reservations in recommending AVC to anyone."

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Patricia G

"My partner had laser eye surgery and the results were amazing. The staff were very attentive and put him at ease. I would recommend them to anyone thinking about the treatment. It only took minutes for the treatment!"

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Paulina U

Advanced Vision Care partnered with Vision Aid Overseas 13 years ago.

Over 6000 AVC patients have donated their glasses to help those less fortunate to see the world the way it is meant to be seen.

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