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This abstract is assigned to session AOB Poster session1

Title	Induced astigmatism after Ultrasonic Circular Cyclo Coagulation in patients with open angle glaucoma.
Abstract Nr.	1032

Purpose	To report two cases of induced corneal astigmatism after Ultrasonic Circular Cyclo Coagulation (UC3) in patients with juvenile open angle glaucoma.
Methods	Two 50-years-old patients with congenital glaucoma underwent UC3. A decreased visual acuity in the operated eye was observed in the two cases within the first two weeks after the procedure.
Results	The visual acuity decreased from 200/200 to 40/200 and 200/200 to 50/200 respectively. Changes in manifest refraction were demonstrated: from +0.25 (-0.25) 160° diopters preoperatively to corneal astigmatism of +1.25 (-4) 30° postoperatively in the first patient and from +0.25 (-0.50) 90° diopters to +2 (-2) 5° in the other one. The astigmatism decreased spontaneously after two months. There was no other major intra- or post-operative complication.
Conclusion	Induced corneal astigmatism is a previously undescribed complication that can occur after UC3. An explanation could be the increase of pressure due to the device probe on the sclera, known to be more elastic in patients with juvenile open angle glaucoma.

Authors 1

Last name	CHAPELLE
Initials	AC
Department	CHU Sart-Tilman
City	Liège

Authors 2

Last name	DUPONT
Initials	G
Department	CHU Sart-Tilman
City	Liège

Authors 3

Last name	COLLIGNON
Initials	NJ
Department	CHU Sart-TIlman
City	Liège