vision ultrasound explained

Overview

An eye ultrasound (also called an ocular ultrasound) is a painless test that uses sound waves to create pictures of the inside of your eye. It helps doctors see parts of the eye that are difficult to view with a routine eye exam, such as the retina and the vitreous gel.

Eye ultrasound is a common diagnostic tool in eye clinics and hospital eye departments, especially when a clear view of the inside of the eye is needed.

It can be used for people of all ages, including infants, children, adults, and older adults. You may need this test if your doctor cannot see the back of your eye clearly or needs more detail.

Symptoms

Common symptoms

• Sudden or gradual vision changes
• Floating spots or flashes of light
• A shadow or curtain affecting part of your vision
• Eye pain, redness, or swelling
• Recent injury to the eye

Symptoms in children

• A white or unusual glow in the pupil
• Squinting, poor vision, or the child not following objects
• Eye injury from play or an accident

Symptoms in older adults

• Cataracts that cloud the lens and make it hard to see the retina
• Age-related floaters or flashes that suddenly increase
• Vision loss that cannot be corrected with glasses

Causes

Main causes

• Your doctor needs to see the retina but something blocks the view, like a cataract or bleeding inside the eye
• You have symptoms that suggest a retinal detachment or tear
• You have had an injury to the eye and the doctor needs to check for damage
• There is a suspected growth or abnormal tissue inside the eye

Risk factors

• Age-related changes in the eye, such as cataracts or vitreous detachment
• Diabetes, which can cause bleeding or new blood vessels in the eye
• Severe nearsightedness (high myopia)
• Previous eye surgery or trauma
• A family history of retinal detachment

When to see a doctor

See a doctor urgently if:

• If you have sudden, severe vision loss or a curtain over your sight, seek emergency care immediately.
• If you have flashes and floaters together, especially if they increase suddenly, contact your eye doctor the same day.

Book a routine appointment if:

• If you notice gradual vision changes or new floaters that bother you, book an eye exam.
• If you have diabetes or another condition that affects your eyes, keep your regular check-up schedule.

Diagnosis

Your doctor will first do a full eye exam. If they cannot see the back of your eye clearly, they may recommend an eye ultrasound. This test uses a small hand-held probe placed on your closed eyelid with a gel to create images of the inside of your eye.

Tests that may be done

• Visual acuity test (reading letters on a chart)
• Slit-lamp exam to look at the front and internal structures of the eye
• Eye ultrasound to see the retina, vitreous, and surrounding tissues
• Sometimes a test called optical coherence tomography (OCT), which uses light instead of sound to create detailed images

What to expect at your appointment

You will sit in a chair or lie down. A gel is placed on your closed eyelid, and a small probe is moved gently over the eyelid. You may be asked to look in different directions. The test is painless and usually takes about 10 to 15 minutes. You can go home right after.

Treatment

Eye ultrasound is a test that helps your doctor find the cause of your symptoms. The treatment depends entirely on what the ultrasound shows. Your doctor will explain the findings and recommend a plan tailored to you.

Self-care at home

• Follow your doctor's advice about rest, eye drops, or wearing an eye patch.
• Wear sunglasses if bright light bothers your eyes.
• Avoid rubbing or pressing on your eyes.
• Keep all follow-up appointments to monitor your eye health.

Medical treatments

Depending on the cause, treatment may involve laser therapy, eye injections, oral medications, or careful monitoring. For some conditions, injections of medicines into the eye can help. These treatments are given by a specialist and chosen based on your specific diagnosis. Never start or stop any eye medicine without talking to your doctor.

When is surgery considered?

Surgery may be recommended for conditions like retinal detachment, cataracts, or a growth in the eye that needs to be removed. The type of surgery depends on the problem and your overall health.

Living with this condition

If you have an eye condition, keep up with your appointments and tell your doctor about any new or worsening symptoms. Use your glasses or other vision aids as recommended.

Lifestyle tips

• Control your blood sugar if you have diabetes
• Wear protective eyewear during sports or DIY projects to prevent injuries
• Avoid smoking, as it can harm your eye and overall health
• Get regular eye check-ups, especially as you get older

Diet and exercise

A balanced diet with plenty of fruits and vegetables, plus regular physical activity, can help keep your eyes healthy. If you have diabetes, eating a healthy diet also helps manage your blood sugar and protect your vision.

Mental health and emotional wellbeing

Dealing with vision problems can feel stressful or upsetting. It is normal to have these feelings. Talk to someone you trust, and let your doctor know if you feel anxious or down. If you are in crisis, reach out to a local crisis line or go to the nearest emergency room for support.

Prevention

Not all eye conditions can be prevented, but regular eye exams, managing health conditions like diabetes, and protecting your eyes from injury can reduce your risk.

Vaccines

Some infections that can affect the eyes, such as certain viral infections, are preventable with vaccines. Ask your healthcare provider which vaccines are appropriate for you.

Screening programmes

If you have diabetes or a family history of eye disease, your doctor may recommend regular eye screening. Even without symptoms, screening can catch problems early when treatment is most effective.

Complications

If left untreated

• Without proper diagnosis and treatment, conditions like retinal detachment can lead to permanent vision loss.
• Delay in finding a growth or tumor in the eye may reduce treatment options and affect your vision or health.

Long-term outlook

Many eye conditions can be treated successfully when found early. Even if some vision is lost, there are many ways to adapt and maintain a good quality of life. Your healthcare team is there to help you.

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