IN VIEW: In a patient presenting with mild corneal haze and steroid-induced elevated IOP after corneal transplant, optical coherence tomography (OCT) showed retinal nerve fiber layer thickness that was artefactually thin due to the opacified cornea. As a result of corneal haze, the OCT image only had a signal strength of 3.
IN VIEW: In a patient presenting with mild corneal haze and steroid-induced elevated IOP after corneal transplant, optical coherence tomography (OCT) showed retinal nerve fiber layer thickness that was artefactually thin due to the opacified cornea. As a result of corneal haze, the OCT image only had a signal strength of 3.
Clinicians should also be aware of the possibility of a blocked signal, which can come from a variety of sources, according to Donald L. Budenz, MD.
Blocked signal can be caused by media opacities, pupil edge, drying of the cornea, a smudge on the lens, posterior vitreous detachment, and blinking.
"You might catch the edge of the pupil if you’re doing OCTs undilated, or even a smudged lens can cause blocked signals,” Dr. Budenz said.
Blocked signal can be caused by media opacities, pupil edge, drying of the cornea, a smudge on the lens, posterior vitreous detachment, and blinking.
"You might catch the edge of the pupil if you’re doing OCTs undilated, or even a smudged lens can cause blocked signals,” Dr. Budenz said.