Scleral contact lenses for visual rehabilitation after penetrating keratoplasty: Long term outcomes

Fitting miniscleral contact lenses in Korean patients with keratoconus

“…Various studies on scleral lenses have assessed wear time. The mean wear time in this study was 10.1 hours per day, which is similar to that reported by Severinsky and colleagues (11.8 hours with large scleral lenses) in patients with irregular corneas following penetrating keratoplasty. Pullum, Whithing and Buckley reported an average wear time of 10 hours or more in 59 per cent of 538 patients using large scleral lenses.…”

Scleral Lenses

“…63,67,79,80,87,91,93,99,100,118,126 Other studies reported the number of patients who experienced an improvement of at least two lines of Snellen acuity. Improvements in visual acuity were reported in patients wearing scleral lenses for all indications.…”

“…73,103,126 Wearing time has also been proposed as a measure of success in scleral lens wear. 99,102,111 Of interest, a few studies reported that many patients wearing both PMMA and RGP lenses need to remove the lenses after several hours of wear, 55,68,72,79,102,103,111,128 patients who periodically removed, rinsed, refilled, and reapplied lenses periodically during the day were statistically more likely to be more successful with scleral lens wear than those who did not. 99,102,111 Of interest, a few studies reported that many patients wearing both PMMA and RGP lenses need to remove the lenses after several hours of wear, 55,68,72,79,102,103,111,128 patients who periodically removed, rinsed, refilled, and reapplied lenses periodically during the day were statistically more likely to be more successful with scleral lens wear than those who did not.…”

“…Schein et al, 109 Tan et al, 55,56 Pullum and Buckley, 57 Romero-Rangel et al, 103 Segal et al, 111 Pullum et al, 98 Rosenthal and Croteau, 72 Salam et al, 120 Visser et al, 67,68 Pecego et al, 62 Ortenberg et al, 100 Visser et al, 101 Arumugam et al, 91 Severinsky et al 99 …”

Adaptación de lente de contacto de apoyo escleral en un paciente con queratoplastia penetrante causada por una ectasia unilateral post-LASIK: reporte de caso

“…Por ello, resulta esencial comprender que la respuesta inmunológica se produce por un estímulo quirúrgico o infeccioso o un trauma con pérdida de las barreras oculares, crecimiento de los vasos sanguíneos, neovascularización, vasos linfáticos corneales y aumento de las células inmunológicas, como citoquinas, moléculas coestimoladoras y células de Langerhans, que se desplazan al centro corneal e incrementan la activación de Linfocitos T (5). Así mismo, hay que sumar a estos problemas la alta irregularidad corneal, que es frecuente en estos casos y afecta de manera alarmante la visión y la calidad de vida de las personas (15).…”