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Double Vision and Strabismus

1 Learn

Why do I have double vision?Tom, USA 2

When looking at a single object with both eyes, each eye sends a slightly different image to the brain from its particular viewpoint. When the eyes are properly aligned and coordinated the brain can fuse these two images into a single 3D picture.

There are six extraocular muscles attached to the eyeball, which are responsible for its movement and for tracking objects. When the extraocular muscles are not coordinated and/or misaligned the brain cannot fuse the two images and the result is eye condition called strabismus, commonly called double vision or cross-eyed. One or both eyes can turn inwards, which is called esotropia. One or both eye turning outward is called exotropia.

 

Understanding

How the eye works

The eyeball consists of three layers: sclera, choroid and retina.

1. The sclera is the thick outer layer of the eye, 4/5th of which is white and the rest is transparent. This transparent area, known as the cornea, allows light to enter the eye and is the the first stage of refraction (bending of light rays).

2. The choroid layer contains blood vessels designed to nourish the retina. The anterior (front) part is modified to form the iris. This is the coloured part of the eye, which has two sets of smooth muscles: radial and circular. The radial fibers which are responsible for dilation allow more light to enter the eye. The circular fibers which are responsible for constriction, let in less light and sharpen the image.

Another modified function of the choroid layer is the cillary body muscle that surrounds the edge of the lens, connected to the lens by suspensory ligaments. In a process known as accommodation, the lens is rounded when the cillary muscle contracts and flattens when it relaxes, enabling the eye to focus on objects at different distances.
3. The retina lines 2/3rd’s of the innermost layer of the eye. It contains the essential cells responsible for converting light rays into electrical signals (phototransduction) which are then sent to the brain for processing. These cells are known as photoreceptors and can be divided into rods and cones.

Sharon, New ZealandEach eye roughly contains 6 million cones, found mostly in the centre of the retina. This central area is otherwise know as the macula and allows us to see colour and fine detail. In our periphery we have 120 million rods, which are responsible for seeing movement and dim light.

The electrical signal created by phototransduction is sent via the optic nerve to the thalamus where unnecessary information is discarded.  It is then sent to the visual cortex located in the occipital lobe for initial processing, before being sent to other areas of the brain. The two separate images from each eye are not identical and are put together to create one single fused image, otherwise known as binocular vision.

 

Next step

2 Create

Caleb, USAVision Exercises

  • Palming Eye Exercise

    This eye exercise is essential to vision improvement, as it rests and relaxes the eyes. It achieves this through allowing the optic nerve and retina to completely rest from any external light or activity. The palms touching your eye orbits also brings healing attention and energy to the eyes.

  • Eye Muscle Exercises

    These eye exercises will help strengthen the extraocular muscles of the eye and improve the fine motor skills needed to control the eyes. Both of these are essential for correcting double vision.

  • Eye Obstruction Exercise

    Regardless of age, covering the dominant eye with either obstructed glasses or a small piece of paper encourages the non-dominant eye to become more engaged.

  • Convergence Eye Exercise

  • String of Beads Exercise

    These eye exercises will work on fusion, meaning the eyes will be trained to work together. They will also help develop 3D vision. These eye exercises strengthen the eye’s extraocular muscles and help train the fine motor skills needed for good vision. They will also train the brain to use both eyes together equally.

  • Sunning Eye Exercise

    The Sunning eye exercise accomplishes several important, related things. It reduces light sensitivity and thereby reduces the tendency to squint in bright light. It also causes the pupils to fully contract thereby creating sharper vision. At the same time this eye exercise stimulates the macula. Since the macula needs bright light to become fully active, the macula is underutilized if our eyes are not exposed to sunlight.

  • The Melissa Eye Exercise

    This eye exercise enables the individual to use both eyes independently. It prevents conflict of the eyes, strengthens and coordinates the extraocular muscles and promotes their balanced use. It will also bring rest to an individual with double vision since blocking the central vision with the piece of paper takes away the daily strain of trying to fuse a single image.

Body ExercisesHand Rotations Richard Web

Movement Exercises

  • Head Rotations

  • Shoulder Rotations

    Rotating the head and shoulders loosens your joints and relaxes the surrounding muscles, allowing more blood flow to the head and eyes. This increased blood flow brings more nourishment to the eyes, helps with the removal of waste and strengthens the vessels in the eye. This exercise improves eyesight by bringing better blood flow to the eyes.

Massage TechniquesBrandon, Utah

  • Head Massage

  • Neck Massage

  • Face Massage

    Many people are surprised to hear that massage can improve eyesight. Massage brings more blood flow to the head. It also helps reduce the muscle tension created by using the facial muscles to see more clearly. This tension causes strain and reduced blood flow to the eyes. Reducing strain and increasing blood flow lead to better vision.

Mind Exercises

  • Breaking the Habit of Glasses

    Although glasses are a quick fix for making the world around you clearer, they also promote poor vision habits and create a large amount of eyestrain. This causes a slow deterioration of vision and an unnatural dependency on glasses. Furthermore, corrective lenses for farsightedness (hyperopia) and presbyopia concentrate the light unnaturally on the macula, potentially leading to damage. Besides, don’t we all really want to get rid of our glasses?

  • Keeping a Vision JournalWilliam Fuller shifting eye exercise with charts

    The process of improving eyesight can be slow at times and improvements can easily be forgotten; journaling helps motivation and keeps you on track. The journal also creates a place where you can write about thoughts and feelings.

  • Relaxation

    Our eyesight is clearer when the eyes and the whole visual system are deeply relaxed. Unfortunately relaxation of the eyes is uncommon these days. This creates  eyestrain and leads to poor visual function. We need to take time to relax our eyes to provide the optimum environment for their good use.

Next step

3 Integrate

HOME

The Melissa Eye Exercise

When relaxing, watching TV, performing house chores etc, wear The Melissa.

Convergence Eye Exercises

Take two similar objects and try to fuse them into one i.e. two similar picture frames.

String of Beads Eye Exercise

Look at a close object and pay attention to the the two images in the background, keeping the front image fused, i.e fork or toothbrush.

Eye Obstruction Exercise

Obstruct the dominate eye when relaxing or working around the house.

Eye Muscle Exercises

During regular bathroom routine i.e. brushing teeth,  during TV breaks, when waking up in the morning, before going to bed.

Palming Eye Exercise

Palming before sleep or first thing in the morning, a short palm as a break from continuously looking from near i.e TV or reading, palming whenever the eyes feel tired/strained.

Sunning Eye Exercise

Open a window from within the house and sun.

Head and Shoulder Rotations

Before sleep or first thing in the morning, bathroom habits ie whilst brushing teeth, showering etc, anytime whilst in the house, watching TV, whilst distance looking.

Head, Neck and Face Massage

Watching TV, whilst distance looking, bathroom habits.  before bed or first thing in morning.

Breaking the Habit of Glasses

Place glasses only where needed ie next to computer or TV, do not put glasses on bedside table so you don’t wear them first thing, if finding it difficult to read form near without your glasses, try shifting with large and small print first.

Vision Journal

Keep near by and add an observation when it arises, before bed i.e write out the observations of the day.

Relaxation

Palming, meditation, napping, distance looking, listen to music or audio book, self massage, having a bath, going for a walk.

WORK

The Melissa Eye Exercise

During breaks, before starting and leaving work.

Convergence Eye Exercises

Have convergence chart near by, take any two similar objects and try fusing them i.e. two pencils or a work colleagues eyes.

String of Beads Eye Exercise

Look at a near object and observe two images in the back ground i.e holding a pen close to the eyes and focusing on it. during breaks, have beads near by and perform periodically throughout the day.

Eye Obstruction Exercise

When safe wear off and on throughout the work day, during breaks,

Eye Muscle Exercises

Try before and after starting work, waiting for the coffee or tea to brew, during breaks, eating lunch.

Palming Eye Exercise

Palming just before work starts and just before going home, a short palm as a break from continuously looking from near, palming whenever the eyes feel tired/strained.

Sunning Eye Exercise

Try sunning just before and after work, go outside during breaks and sun, open a window from within the building and sun.

Head and Shoulder Rotations

Perform rotations: when on the phone, reading emails, facebook etc, before palming, whilst sunning and distance looking.

Head, Neck and Face Massage

During breaks, while performing other simple tasks,

Breaking the Habit of Glasses

Place glasses on only when essential, avoid contacts as they are more difficult to put on and off, if finding it difficult to read form near without your glasses, try shifting with large and small print first.

Vision Journal

Keep journal near by and make observations.

Relaxation

Make sure you take your breaks! palming, meditation, distance looking, listen to music or audio book, self massage, going for a walk.

TRANSIT

The Melissa Eye Exercise

Walking from A to B, being a passenger.

Convergence Eye Exercises

Fuse two similar images together i.e, two empty seats, windows, signs or fingers etc, carry doubling charts.

String of Beads Eye Exercise

Look at a close object and observe two images in the background i.e focusing on the finger watching the world go by in the background.

Eye Obstruction Exercise

Walking from A to B, being a passenger.

Eye Muscle Exercises

Waiting for bus, being a passenger,

Palming Eye Exercise

During transit, if eyes become strained or tired whilst driving stop and palm.

Sunning Eye Exercise

While waiting for public transit to arrive, when going outside stop a sun briefly to help eyes adjust to the light.  slowly wean yourself from sunglasses

Head and Shoulder Rotations

Waiting for public transit to arrive, during travel, if driving stop for short breaks, whilst walking.

Head, Neck and Face Massage

Before and during travel, taking a break from driving,

Breaking the Habit of Glasses

If passenger carrying glasses in your pocket and only use when necessary, use pin hole glasses instead of prescription glasses.if finding it difficult to read form near without your glasses, try shifting with large and small print first.

Vision Journal

Make observations about your vision while in transit.

Relaxation

Wear all three sizes of peripheral vision exercise papers while a passenger, palming, meditation, distance looking, listen to music or audio book, self massage.

COMPUTER

The Melissa Eye Exercise

During computer breaks.

Convergence Eye Exercises

Any two objects on the screen, download doubling charts.

String of Beads Eye Exercise

During breaks, have beads near by and perform periodically throughout the day, turn away from the screen and use two fingers or pens close and far as a substitute for the beads.

Eye Obstruction Exercise

Wear off and on while working on the computer,  during breaks.

Eye Muscle Exercises

Waiting for web page to load, during breaks,  before using computer and after, while palming.

Palming Eye Exercise

Palming just before and after working on the computer, a short palm as a break every hour, palming whenever the eyes feel tired/strained.

Sunning Eye Exercise

Try sunning just before and after computer use, go outside during breaks and sun, open a window from within the building and sun.

Head and Shoulder Rotations

Perform rotations anytime when on the computer, before palming, whilst sunning and distance looking.

Head, Neck and Face Massage

During breaks, while performing simple tasks on the computer,

Breaking the Habit of Glasses

Place glasses on only when essential, instead of wearing glasses try increasing font/page size,  avoid contacts as they are more difficult to put on and off, use pinholes instead of prescription glasses, if finding it difficult to read form near without your glasses, try shifting with large and small print first.

Vision Journal

Keep the journal close by and make observations.

Relaxation

Make sure you take  breaks from the computer! Peripheral vision exercises, palming, distance looking, self massage, chair stretches, going for a walk.