Abstract
Purpose: :
To evaluate anterior segment modifications after two a triple procedure for treatment of pseudophakic bullous keratopathy (PBK), using anterior segment optical tomography (AS-OCT).
Methods: :
15 eyes of 15 patients underwent a triple procedure involving penetrating keratoplasty (PKP), previous anterior chamber intraocular lens (IOL) removal, and iris-claw IOL implantation in the anterior chamber. AS-OCT scans performed 2 years after surgery measured central anterior chamber depth (ACD), distance of the haptics from the corneal endothelium (CED), angle opening distance 500µm from the scleral spur (AOD500) and the iridocorneal angle t on the 4 o’clock meridian lines (AOD3, AOD9, AOD12, AOD6 / and t3, t9, t12, t6). Endothelial Cell Loss (ECL) was assessed with a noncontact specular microscope (Topcon SP-2000P) and compared with 15 eyes of 15 patients who had undergone PKP for Fuchs Dystrophy.
Results: :
Patients presented with a significantly higher endothelial cell loss after 2 years when compared to a phakic patients with PKP for Fuchs Dystrophy (p=0.008). AS-OCT showed that PKP with iris-claw IOL enclavation in the AC involved a shallowing of the AC with an anterior translation of the iridal plane and a partial closure of t.
Conclusions: :
Because it is non-contact, easy to use AS-OCT is a technique of choice for the post-operative assessment of the AS anatomical changes after a TP.
Keywords: cornea: clinical science • intraocular lens • imaging methods (CT, FA, ICG, MRI, OCT, RTA, SLO, ultrasound)