Penetrating keratoplasty in children is a highly challenging and demanding procedure associated with a high risk of graft failure or failure of amblyopia therapy in clear grafts. Nonetheless, keratoplasty remains the surgery of choice for the management of pediatric corneal stromal opacities or edema. Allograft rejection, graft infection, corneal neovascularization, glaucoma, trauma to the anterior segment, vitreous pathology, and additional surgical interventions, especially those related to glaucoma management, are important risk factors. Successful penetrating keratoplasty in children requires careful preoperative evaluation and selection of patients follow-up by well-motivated parents, an expert corneal transplant surgeon, and a devoted pediatric ophthalmologist.
In our experience, literacy, socioeconomic status, and prior knowledge of eye donation of next kin had no correlation with donor corneal tissue procurement. Active counseling by a motivated team can be effective even in families with no prior knowledge and low socioeconomic status.
Post-penetrating keratoplasty (post-PK) glaucoma is an important cause of irreversible visual loss and graft
failure. The etiology for this disorder is multifactorial, and with the use of new diagnostic equipment, it is
now possible to elucidate the exact pathophysiology of this condition. A clear understanding of the various
mechanisms that operate during different time frames following PK is essential to chalk out the appropriate
management algorithms. The various issues with regard to its management, including the putative risk factors,
intraocular pressure (IOP) assessment post-PK, difficulties in monitoring with regard to the visual fields
and optic nerve evaluation, are discussed. A step-wise approach to management starting from the medical
management to surgery with and without metabolites and the various cycloablative procedures in cases of failed
filtering procedures and excessive perilimbal scarring is presented. Finally, the important issue of minimizing
the incidence of glaucoma following PK, especially through the use of oversized grafts and iris tightening
procedures in the form of concomitant iridoplasty are emphasized. It is important to weigh the risk-benefit
ratio of any modality used in the treatment of this condition as procedures aimed at IOP reduction, namely
trabeculectomy with antimetabolites, and glaucoma drainage devices can trigger graft rejection, whereas
cyclodestructive procedures can not only cause graft failure but also precipitate phthisis bulbi. Watchful
expectancy and optimal time of intervention can salvage both graft and vision in this challenging condition.
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