Sir,

We read with interest the article by Bhola et al.1 Trans-scleral contact diode laser cyclophotocoagulation (TCDLC) has been used in eyes with refractory glaucomas that have received multiple filtering operations.2,3 Bhola reported the serious complications of TCDLC, staphyloma and scleral thinning. All three eyes in his series had pathology, previous radiotherapy, or previous surgery before TCDLC. Distortion of anatomy, scleral thinning after radiotherapy, or scarring from previous surgery could have increased the risk of these complications. Whether these complications could occur to any significant extent in glaucoma eyes without other pathologies and no previous surgery is still uncertain.

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