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Prevalence of ciliochoroidal effusion after prophylactic laser iridotomy
Hiroshi Sakai1, Hideo Ishikawa, Manabu Shinzato
1Department of Ophthalmology, University of the Ryukyus Medical Department Hospital, Nishihara-cho, Okinawa, Japan. hi-hiro@mtf.biglobe.ne.jp
Purpose:
To study the prevalence of ciliochoroidal effusion (CE) after prophylactic laser iridotomy (LI).
Methods:
An ultrasound biomicroscope (UBM) examination was performed before, 2, and 24 hours after LI to investigate the changes in supraciliary-choroidal space after LI in circumference of 38 eyes in 23 chronic primary angle-closure patients. Subjects were divided randomly into two groups based on LI settings: 21 eyes by argon laser (Ar-LI group) and argon combined with yttrium-aluminum-garnet (YAG) laser in 17 eyes (Ar-YAG-LI group). Ciliochoroidal effusion was observed predominantly in the inferior sector (12 of 12 eyes, 100%) and rare in nasal part of the eyes (4 of 12 eyes, 33%). Ciliochoroidal effusion appeared more often in the Ar-LI group (10 eyes, 52%) than in the Ar-YAG-LI group (2 eyes, 12%). All CE disappeared 7 days after by UBM observation.
Conclusions:
Subclinical CE observed by UBM frequently occurs after LI.