A B-scan uses sound waves to make a picture of the inside of the eye. It is used when the doctor cannot see the retina directly, for example through a dense cataract or a bleed inside the eye, and to measure lumps and swellings.
A similar ultrasound probe can measure the length of the eye (A-scan biometry) to calculate the lens power for cataract surgery when optical biometry is not possible. See biometry before cataract surgery.
No. The probe rests gently on the closed eyelid with gel.
Yes. It uses sound waves, not radiation.
Yes, unless you also had dilating drops.
Usually the doctor can explain the main findings at the same visit.
Related: Cataract Surgery in Ahmedabad, Retina Treatment in Ahmedabad, Eye Injury & Emergency Treatment Ahmedabad.
This leaflet gives general information and does not replace advice from your own eye doctor. Reviewed by Dr. Dhaval Patel, MD (Ophthalmology, AIIMS New Delhi), November 2026.
Sadbhaav Eye & Dental Clinic, Motera, Ahmedabad. Dr. Dhaval Patel, MD (AIIMS New Delhi). Monday to Saturday, 10 am to 1 pm and 5 pm to 8 pm. For a serious eye injury outside clinic hours, go to the nearest eye hospital or emergency department.
Where healthy eyes and confident smiles come together.
Eye care by an AIIMS-trained ophthalmologist; dental care by an MDS endodontist — both dedicated specialists in their respective fields.
Dr. Dhaval Patel brings 15+ years of clinical experience since starting his ophthalmology residency at AIIMS, New Delhi in 2011.
Our staff communicates comfortably in both Gujarati and English, so every step of your visit — from reception to aftercare instructions — is easy to follow.
Dr Dhaval Patel has conducted many eye camps in Africa and visits yearly for the same.