Assessment of angle of anterior chamber by anterior segment optical coherence tomography before and after implantable phakic contact lens in high myopia

Abstract

The prevalence of myopia is very high. Most patients seeking refractive surgery treatments suffer from moderate to high myopia. Laser corneal refractive surgeries to correct myopia have gained wide acceptance worldwide. However, the surgery is not safe for patients with high level of refractive error and relatively thin corneas, as these conditions could increase the risk of postoperative corneal ectasia. Phakic intraocular lens implantation could correct a wider range of refractive errors and avoid decreases in corneal thickness; therefore, it would be a good option for patients with these conditions. Even in eyes with keratoconus, the phakic IPCL was found to be effective in correcting high myopic astigmatism. The ultimate goal of this study was for assessment of angle of anterior chamber by anterior segment optical coherence tomography before and after implantable phakic contact lens in high myopia, in an attempt to achieve better management for such condition. This study was a prospective interventional trial908 that was carried out on 20 eyes of 11 patients with high myopia, who were not amenable to laser refractive surgery correction, the patients divided into two groups: Group A: Ten eyes from – 7 D to – 12 D. Group B: Ten eyes from more than – 12 D to – 20 D, all patients consecutively scheduled for IPCL implant to treat myopia. All patients were subjected to complete history taking include: Personal history as; name, age, sex, occupation, residence. Present history as; onset, course, and duration of myopia, and visual loss. Past and family history of any ocular disorders, chronic illness or associated disease either