Abstract
In this case series of 74 patients with coexisting vitreoretinal injury and severe corneal opacification, after temporary keratoprosthesis (TKP) assisted pars plana vitrectomy (PPV), an allograft corneal transplant was not performed at the same time; instead, the patient's trephined corneal button was sutured back. One year after the surgery, if intraocular pressure of the injured eyes was above 8 mmHg, removing silicone oil was attempted, and penetrating keratoplasty could be performed. Finally, 10 eyes (13.5%) were enucleated due to atrophia bulbi; 46 eyes (62.2%) were silicone-oil sustained; 15 eyes (20.3%) were anatomically restored; and 3 eyes (4.0%) experienced recurrent retinal detachment. These figures only demonstrate a small percentage of the injured eyes in our series, which have PKP indications. It is a practical option to suture back the patient's trephined cornea following a TKP assisted PPV; keratoplasty was reserved for selected cases.
Highlights
A severe ocular injury sometimes results in an anterior segment anomaly and a posterior segment disturbance, simultaneously
A penetrating keratoplasty (PKP) procedure is usually performed after a pars plana vitrectomy (PPV) using temporary keratoprosthesis (TKP)
After a TKP assisted PPV, an allograft corneal transplant was not performed at the same time; instead, the patient’s trephined corneal button was sutured back
Summary
A severe ocular injury sometimes results in an anterior segment anomaly and a posterior segment disturbance, simultaneously. A variety of corneal injuries can cause an opaque cornea that impedes the visualization of the fundus during vitreoretinal surgery. For this circumstance, an endoscopyassisted vitrectomy is one solution [1], and the application of temporary keratoprosthesis (TKP) is another solution [2,3,4,5]. A penetrating keratoplasty (PKP) procedure is usually performed after a pars plana vitrectomy (PPV) using TKP. The main reasons for these unfavorable results were ciliary body malfunction and secondary graft failure [3]
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