Carotid-cavernous fistula due to contralateral orbital trauma.

Direct carotid cavernous fistula is an abnormal arterio-venous connection from the carotid artery to the cavernous sinus (CS), resulting in high-pressure arterial blood entering the low-pressure venous CS. Most often, it occurs posttrauma and presents with ipsilateral orbital signs. In this report, we describe the case of a 54-year-old man, who presented with a late-onset right-sided red eye and diplopia following contralateral (left sided) orbital trauma (road traffic accident 7 months ago).

Intraocular lens power calculation changes before and after isotonic collagen cross-linking in keratoconus patients.

Purpose: To find the intraocular lens (IOL) power calculation changes before and after isotonic collagen cross-linking (CXL) in keratoconus patients.

Methods: : Thirty-five eyes of 25 patients who underwent isotonic CXL were included. The cases included conventional CXL (n = 16), accelerated CXL (n = 7), contact lens-assisted CXL (CACXL) (n = 9), accelerated CACXL (n = 3).