What is transillumination of iris?
Bilateral acute iris transillumination (BAIT) is a recently defined disease characterized with bilateral acute, severe pigment dispersion of iris and pupil sphincter paralysis.
What causes iris transillumination?
Known causes of acquired iris atrophy with or without transillumination of the iris include herpetic iridocyclitis, pigment dispersion syndrome (PDS), pseudoexfoliation syndrome, Fuchs uveitis syndrome, Vogt-Koyanagi-Harada disease, trauma, and acute angle-closure glaucoma.
What is transillumination of the eye?
Normal Iris: Transillumination of a normal iris shows a radial pattern with the sphincter muscle as a darker area around the pupil. Usually a shadow of the lens can be seen. Darker color eyes have more pigment than blue eyes.
What are Transillumination defects?
Definition. Transmission of light through the iris as visualized upon slit lamp examination or infrared iris transillumination videography. The light passes through defects in the pigmentation of the iris. [
Can you go blind from pigmentary glaucoma?
Pigment dispersion syndrome can lead to permanent damage to the drain and elevated eye pressure. Over time, the elevated eye pressure can damage the optic nerve, causing pigmentary glaucoma. Untreated glaucoma can lead to vision loss and eventually blindness.
What does it mean when your pupil isn’t centered?
Corectopia is the displacement of the eye’s pupil from its normal, central position. It may be associated with high myopia or ectopia lentis, among other conditions. Medical or surgical intervention may be indicated for the treatment of corectopia in some cases.
What is a gonio test?
Test Overview Gonioscopy is an eye examination to look at the front part of your eye (anterior chamber) between the cornea and the iris. Gonioscopy is a painless examination to see whether the area where fluid drains out of your eye (called the drainage angle) is open or closed.
What is a diaphanoscope for transillumination?
Astodia Diaphanoscope for Transillumination. The Astodia enables the identification of air or liquid-filled structures deep below the skin’s surface (such as a pneumothorax, hydroceles). The Astodia is particularly suitable for paediatrics and especially for premature and newborn babies.
What is the differential diagnosis of iris transillumination?
The slit lamp photos demonstrate an unusual pattern of focal iris transillumination. What is the differential diagnosis of iris transillumination? Iris transillumination can be caused by stromal or iris pigment epithelial loss or a defect/hole in the iris tissue.
What is an Astodia diaphanoscope used for?
Astodia Diaphanoscope for Transillumination The Astodia enables the identification of air or liquid-filled structures deep below the skin’s surface (such as a pneumothorax, hydroceles). The Astodia is particularly suitable for paediatrics and especially for premature and newborn babies.
How do you assess the patency of iridotomies and iridectomies?
When assessing the patency of peripheral iridotomies and iridectomies, a great tip that I learned is to have the patient look down towards your chin, elevate the upper lid, and look for iris transillumination near the 11 and/or 1 o’clock position, where transilluminations are most commonly located.