Contrast Sensitivity in Deep Anterior Lamellar Keratoplasty Versus Penetrating Keratoplasty

Comparative study of keratoconus between Anwar's deep anterior lamellar keratoplasty versus converted penetrating keratoplasty

“…12 This technique avoids or minimizes complications related to intraocular procedures such as expulsive hemorrhage, endophthalmitis, anterior peripheral synechiae and angle closure secondary to glaucoma. 9 There is increased evidence that DALK could be a safer alternative to PK even without demonstrating better visual results 13,14 when executed adequately with deep dissection. 15 Finally, DALK would be more useful for preserving ocular structural integrity in the presence of trauma.…”

Deep Anterior Lamellar Keratoplasty Versus Penetrating Keratoplasty

“…[8][9][10][11] Our meta-analysis indicates that PK achieved a better visual acuity by calculating logMAR BCVA and UCVA. However, comparable visual outcomes were obtained between PK and DALK group by analyzing the number of eyes with BCVA better or equal to 20/40.…”

“…6 The main disadvantage with DALK is that the procedure is time consuming and technically demanding, but DALK has the potential advantage that it avoids most complications encountered during open surgery like in PK such as anterior synechia, expulsive hemorrhage, and endophthalmitis, and requires less rigid criteria for donor corneal tissue selection. 7 Although some studies have reported visual outcomes to be comparable, 8,9 several others have documented less favorable results after DALK surgery. 10,11 The review by Reinhart identified 11 nonrandomized (case-control, cohort and case series) studies, which compared DALK and PK for any corneal stromal pathology.…”

Trasplante de córnea en queratocono: queratoplastia penetrante versus queratoplastia lamelar anterior profunda con técnica de Melles

“…Muchos de los estudios previos han publicado una agudeza visual comparable entre la técnica DALK y la QPP [18][19][20][21][22][23][24] . Nosotros hemos obtenido una visión inferior en el grupo DALK, debido a que en esta técnica queda un lecho de estroma residual y ocasiona una peor calidad visual, sin ser esta diferencia estadísticamente significativa.…”