About this procedure
Ocular ultrasound provides images of certain structures inside the eye, especially when a direct view of the back of the eye is limited. It is not the same examination as optical coherence tomography (OCT).
What this topic means
An ophthalmologist may recommend ultrasound for selected suspected vitreous or retinal conditions, lesions or consequences of disease. It complements, rather than replaces, a full eye examination and other appropriate tests.
When to seek medical advice
Possible reasons for assessment include reduced visibility of the fundus, suspected internal changes or injury. New floaters or altered vision require proper clinical triage; sudden loss of vision or a curtain-like shadow is not a routine ultrasound request.
Options and limitations
Ultrasound and OCT answer different questions and visualise different tissues. Not all abnormalities are well characterised by ultrasound; the choice may include fundoscopy, OCT or another investigation depending on the patient.
Assessment and preparation
The clinician selects a safe technique and explains the examination. Images are described alongside visual acuity, eye symptoms and examination findings. A possible penetrating injury changes the approach; pressure on an injured eye must be avoided.
Treatment, risks and follow-up
Ultrasound does not itself treat retinal detachment or other eye diseases. Follow-up or urgent treatment depends on the ophthalmologist's diagnosis. If a dangerous condition is suspected, imaging must never delay immediate assessment.
When urgent help is needed
Sudden loss of vision, a dark curtain, severe eye pain, chemical injury or a possible open-globe injury requires immediate emergency eye care. Call 103/112 for serious injury or rapid deterioration; do not press on the affected eye.
Related information
Diseases of the retina and macula; Paediatric ophthalmologist consultation.
Signs and symptoms
Possible reasons for assessment include reduced visibility of the fundus, suspected internal changes or injury. New floaters or altered vision require proper clinical triage; sudden loss of vision or a curtain-like shadow is not a routine ultrasound request.
Diagnosis and tests
The clinician selects a safe technique and explains the examination. Images are described alongside visual acuity, eye symptoms and examination findings. A possible penetrating injury changes the approach; pressure on an injured eye must be avoided.
Care and treatment approaches
Ultrasound does not itself treat retinal detachment or other eye diseases. Follow-up or urgent treatment depends on the ophthalmologist's diagnosis. If a dangerous condition is suspected, imaging must never delay immediate assessment.
When to seek urgent care
Sudden loss of vision, a dark curtain, severe eye pain, chemical injury or a possible open-globe injury requires immediate emergency eye care. Call 103/112 for serious injury or rapid deterioration; do not press on the affected eye.
Frequently asked questions
Is ocular ultrasound the same as OCT?
No. OCT and ultrasound have different principles and clinical uses; an ophthalmologist selects the suitable examination.
Are eye drops always required for ultrasound?
No. The approach and whether any drops are needed depend on the technique and individual examination.
Should I book a routine scan for sudden vision loss?
No. Sudden visual loss is an emergency symptom and requires prompt medical evaluation rather than a routine imaging slot.
Important information
A medical consultation is needed for diagnosis and treatment recommendations.
Self-treatment can be harmful to your health.
