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Purpose: To study the optic nerve head characteristics on optical coherence tomography (OCT) in patients with papilledema and correlate them with intracranial pressure (ICP). Methods: A retrospective hospital-based study of 46 eyes of 23 patients with bilateral optic disc edema secondary to increased ICP. The clinical profile and the OCT features in terms of retinal nerve fiber layer thickness (RNFL), ganglion cell inner plexiform layer (GCIPL) thickness, and enhanced depth imaging (EDI) B scan images of the optic nerve head were studied and correlated with the ICP. Results: Papilledema was secondary to idiopathic intracranial hypertension (IIH) (n = 20), obstructive hydrocephalus (n = 2), and communicating hydrocephalus (n = 1). The mean ICP in 20 IIH patients was 347 mmH[sub.2]O. The ICP and RNFL thickness in all four quadrants were found to be weakly positively correlated: superior RNFL r (38) = 0.17, P = 0.30, and nasal RNFL r (38) = 0.30, P = 0.05, inferior RNFL r (38) = 0.29, P = 0.07, and temporal RNFL, r (38) = -0.001, P = 0.99. The GCIPL layer thickness and the ICP were weakly negatively correlated in all sectors: superior (38) = -0.23, P = 0.16, superonasal, r (38) = -0.07, P = 0.67, inferonasal r (38) = -0.08, P = 0.64, inferior r (38) = -0.21, P = 0.19, inferotemporal r (38) = -0.23, P = 0.17, superotemporal, r (38) -0.21, P = 0.20. Descriptive features on the B scan, such as peripapillary hyperreflective ovoid mass-like structures and microcystic spaces, were observed most commonly with an ICP of 251-350 mmH[sub.2]O, and the hyperreflective dots in the RNFL layer and Bruch's membrane inward denting were observed more commonly with an ICP of 351-450 mmH[sub.2]O. Conclusion: The RNFL thickness in all four quadrants had a weak positive correlation, and the GCIPL layer had a weak negative correlation with the ICP. The EDI descriptive features on OCT may vary with ICP. Keywords: Enhanced depth imaging, idiopathic intracranial hypertension, optic nerve head drusen, optical coherence tomography, Author(s): Shikha Talwar Bassi (corresponding author) [1]; Ramesh Pamu [2]; Selvakumar Ambika [3]; Smita Praveen [4]; Durga Priyadarshini [4]; Vidhya Dharini [4]; K Padmalakshmi [4] Papilledema is defined as optic [...]

Byline: Singson. Kwan, Ayisha. Atiya, Jameel. Hussaindeen, Smita. Praveen, Selvakumar. Ambika Purpose: To report the ocular features of patients with PD who presented with visual complaints to a tertiary eye [...]

Byline: Sujatha. Kadambi, Vijaya. Lingam, Smita. Praveen, Durga. Priyadarshini, Ronnie. George Differentiating glaucomatous and non-glaucomatous optic neuropathy can be challenging even to an experienced clinician and it is even more [...]

Byline: Smita. Praveen Sir, Your editorial on ophthalmology residency training is an extremely relevant article.[1] Having trained close to 1000 postgraduates and fellows in comprehensive ophthalmology, I absolutely agree with [...]

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