Cung Le Xuan, Nga Duong Mai, Ngan Nguyen Dinh, Hiep Nguyen Xuan, Quyet Do, Thai Than Van, Nga Vu Thi, Dinh Toi Chu, Bac Nguyen Duy
Vietnam National Institute of Ophthalmology, Hanoi, Vietnam.
Vietnam Military Medical University (VMMU), Hanoi, Vietnam.
Open Access Maced J Med Sci. 2019 Dec 20;7(24):4287-4291. doi: 10.3889/oamjms.2019.376. eCollection 2019 Dec 30.
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.
To evaluate the results of PK for keratoconus in Vietnamese patients.
This was a retrospective study of 31 eyes with keratoconus who underwent PK in VNIO from January 2005 to December 2014.
The average visual acuity was 0.86 ± 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 ± 4.5D. Mean corneal astigmatism was 5.9 ± 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.
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.
圆锥角膜是一种可损害视力的角膜扩张性疾病。到目前为止，穿透性角膜移植术（PK）仍然是治疗严重圆锥角膜最常见的外科手术。在越南，大多数圆锥角膜患者在疾病严重阶段才前来就医并接受PK治疗，因此我们开展了这项研究。
评估越南患者圆锥角膜PK手术的效果。
这是一项对2005年1月至2014年12月在越南国家眼科研究所接受PK手术的31例圆锥角膜患者的回顾性研究。
平均视力为0.86±0.37 logMAR（20/145）。在无弱视的患者组中，75.9%的患眼最佳矫正视力达到20/60或更好，93.1%的患眼使用硬性角膜接触镜矫正后最佳视力达到20/40或更好。术后平均角膜屈光力为43.8±4.5D。平均角膜散光为5.9±2.7D。94.6%的移植片保持透明。22.6%的患眼发生后囊下白内障。12.9%的患眼出现移植片排斥反应。
PK手术对圆锥角膜患者是一种有效的手术，移植片存活率高。然而，患者应意识到术后进行光学矫正以获得最佳视力的必要性。
