Ultrasound biomicroscopic features of spherophakia.
BACKGROUND
Spherophakia is an uncommon diagnosis. This is the first case report of spherophakia evaluated by ultrasound biomicroscopy.


METHODS
Ultrasound biomicroscopy is a new diagnostic technique developed by one of the authors and provides images with microscopic resolution of the anterior segment. A patient with spherophakia was evaluated by ultrasound biomicroscopy (Zeiss-Humphrey, 50MHz) before and after YAG laser iridotomy.


RESULTS
Ultrasound biomicroscopic assessment revealed a shallow anterior chamber, a very steep anterior lens curvature, iridolenticular contact, elongated zonules, and an increased distance between the lens equator and the ciliary processes. Angle closure glaucoma was due to a pupil block mechanism. The pupil block was relieved by YAG laser iridotomy.


CONCLUSIONS
Ultrasound biomicroscopy is a useful technique to confirm the diagnosis of spherophakia. The pupil block in spherophakia is relieved by YAG laser iridotomy.
Department of Ophthalmology, Toronto Hospital, University of Toronto, Ontario, Canada.
P L
PL
Macken
C J
CJ
Pavlin
R
R
Tuli
G E
GE
Trope
D000328:Adult; D005260:Female; D015812:Glaucoma, Angle-Closure / Q000150:complications / Q000601:surgery; D006801:Humans; D007498:Iris / Q000601:surgery; D007499:Iris Diseases / Q000150:complications / Q000601:surgery; D053685:Laser Therapy; D007905:Lens Diseases / Q000150:complications / Q000000981:diagnostic imaging*; D011184:Postoperative Period; D011680:Pupil; D014463:Ultrasonography