Penetrating Keratoplasty for Keratoconus in Vietnamese Patients

Le Xuan Cung; Duong Mai Nga; Nguyen Dinh Ngan; Nguyen Xuan Hiep; Do  Quyet; Than Van  Thai; Vu Thi  Nga; Toi  Chu Dinh; Nguyen Duy Bac

doi:10.3889/oamjms.2019.376

Authors

Le Xuan Cung Vietnam National Institute of Ophthalmology, Hanoi, Vietnam
Duong Mai Nga Vietnam National Institute of Ophthalmology, Hanoi, Vietnam
Nguyen Dinh Ngan Vietnam Military Medical University (VMMU), Hanoi, Vietnam
Nguyen Xuan Hiep Vietnam National Institute of Ophthalmology, Hanoi, Vietnam
Do Quyet Vietnam Military Medical University (VMMU), Hanoi, Vietnam
Than Van Thai NTT Hi-tech Institute, Nguyen Tat Thanh University, Ho Chi Minh City, Vietnam
Vu Thi Nga Institute for Research and Development, Duy Tan University, 03 Quang Trung, Danang, Vietnam
Toi Chu Dinh Department of Human and Animal Physiology, Faculty of Biology, Hanoi National University of Education, Hanoi, Vietnam
Nguyen Duy Bac Vietnam Military Medical University (VMMU), Hanoi, Vietnam

DOI:

https://doi.org/10.3889/oamjms.2019.376

Keywords:

Keratoconus, Penetrating keratoplasty, Donor-recipient disparity

Abstract

BACKGROUND: Keratoconus is an ectatic corneal disorder that can impair the visual acuity. Up to now, penetrating keratoplasty (PK) remains the most common surgical procedure to treat severe keratoconus. In Vietnam, most keratoconus patients come to visit doctor at severe stage and were treated by PK, so we conduct this study.

AIM: To evaluate the results of PK for keratoconus in Vietnamese patients.

METHODS: This was a retrospective study of 31 eyes with keratoconus who underwent PK in VNIO from January 2005 to December 2014.

RESULTS: The average visual acuity was 0.86 Â± 0.37 logMAR (20/145). In the group of patients without amblyopia, best spectacle-corrected visual acuity of 20/60 or better was recorded in 75.9% of eyes and 93.1% of eyes achieved a best corrected visual acuity with hard contact lenses of 20/40 or better. Mean postoperative corneal power was 43.8 Â± 4.5D. Mean corneal astigmatism was 5.9 Â± 2.7D. 94.6% of grafts remained clear. Posterior subcapsular cataract developed in 22.6% of eyes. Graft rejection was recognized in 12.9% of eyes.

CONCLUSION: PK is an effective procedure with high rate of graft survival for keratoconus patients. However, patients should be aware of the necessary of optical correction to gain the best VA after surgery.