What is trabeculectomy ab externo?
Trabeculotomy ab externo is one of the established glaucoma surgeries to reduce intraocular pressure (IOP) particularly for childhood glaucoma, exfoliation glaucoma and steroid glaucoma. Recently, a microhook for trabeculotomy ab interno has been developed as an option for micro-invasive glaucoma surgery device.
What is ab interno trabeculectomy?
An ab interno trabeculectomy with a trabectome device begins with a 1.65 mm incision made temporally on the cornea. Viscoelastic is used to prevent AC collapse. The goniolens is then placed on the cornea to view the nasal angle. The probe is inserted through the incision, targeting the nasal TM across the AC.
How old is Ike Ahmed?
38 years old
And no wonder. At just 38 years old, Dr. Ahmed is already recognized as one of the world’s most experienced complex eye surgeons, known not only for being at the leading edge of innovative treatments, but actually developing new techniques and surgical devices.
Who invented iStent?
In 2012, Glaukos received FDA clearance and launched Prof. Hill’s invention, dubbed the iStent. The device, a mere 1.0 mm by 0.3 mm, is the first in a comprehensive portfolio of “injectable micro-scale therapies” that will uniquely target the entire range of glaucoma types and severities.
What is the difference between iridotomy and iridectomy?
Iridectomy, is a procedure to remove a part of the iris, which is the colored circular membrane behind the cornea of the eye. Earlier this was performed surgically (surgical iridectomy). However, now the procedure is in most cases performed with a laser (laser iridotomy).
What is the difference between ab interno and ab externo?
The device or procedure can either be approached from inside the eye (ab-interno) or outside the eye (ab-externo). As an example, both trabeculectomy and tube shunt procedures are performed from outside the eye, or an ab-externo approach.
How does the Ahmed glaucoma valve work?
The Ahmed valve is one type of aqueous shunt implantation that drains the aqueous humor fluid from inside the eye to a small capsule (often called bleb) behind the eyelid. Draining the fluid continuously by this method reduces pressure on the optic nerve and can prevent further loss of vision.
Who developed the Ahmed valve?
Krupin implant is designed to open when IOP is >11 mmHg. AGV provides a more complex mechanism to control AH outflow. It was developed by Mateen Ahmed and was approved by the Food and Drug Administration in 1993.
Why is iridectomy done?
Other possible reasons for iridectomy include the removal of the tissue as a preparation for a cataract surgery, placement of an intraocular lens in the anterior chamber, and treatment of trauma to the iris. As for the expected results, patients with glaucoma may experience a more stable intraocular pressure.