Hrishikesh Naik, MS » Miscellaneous

Jul 9 2025 by Hrishikesh Naik, MS

A peripapillary colobomatous pseudo-duplication of the optic disc as seen in an asymptomatic 23 year old female with myopia referred for routine retinal periphery screening. Rest retinal exam was normal. Duplication of the optic disc can be classified as either true duplication or pseudoduplication, both of which are rare clinical conditions. Pseudodoubling of the optic disc is commonly caused by optic disc or peripapillary colobomas, characterized by a circumscribed, disc-like lesion with radiating vessels but only one normal optic nerve. A few cases have involved pathological myopia, moderate myopia, proliferative diabetic retinopathy and CHARGE syndrome. The lesion is often found inferior to the normal optic disc. The patient was advised regular follow ups.

Photographer: Hrishikesh Naik

Imaging device: Optos Daytona

Condition/keywords: Coloboma, Pseudoduplication of optic disc

Dec 28 2025 by Hrishikesh Naik, MS

A 10 MHz B-scan ultrasonography image depicting the double optic nerve head shadow sign, the true optic nerve shadow superiorly along with the pseudo optic nerve shadow in the center. The scan reveals a hyperechoic lesion with 100% reflectivity even at a low gain (46 dB) within the posterior outer coats of the eye with posterior acoustic shadowing suggestive of IOFB. Small intraocular foreign bodies in the outer coats of the eye may be wrongly interpreted as optic nerve head on ultrasound imaging. Such errors can be avoided by performing multiple sonography scans in different axes and confirming the same with additional imaging modalities such as a CT scan.

Photographer: Hrishikesh Naik

Imaging device: BioMedix

Condition/keywords: IOFB, Metallic RIOFB