Bilateral Visual Field Defect Following Laser in Situ Keratomileusis(LASIK).

Yoon, Gil Joong; Chung, Jin Hwang; Ha, Tae Sung

Original Article

Journal of the Korean Ophthalmological Society 2001;42(2):386-391.
Published online February 1, 2001.

Bilateral Visual Field Defect Following Laser in Situ Keratomileusis(LASIK).

Gil Joong Yoon, Jin Hwang Chung, Tae Sung Ha

¹Department of Ophthalmology, The Chosun University Medical College.
²Department of Ophthalmology, Capital Armed Forces General Hospital.

LASIK 수술후 발생한 시야장애

윤길중(Gil Joong Yoon),정진황(Jin Hwang Chung),하태성(Tae Sung Ha)

Abstract

We report a 36-year-old male with the bilateral visual field defect following LASIK was observed. Preoperatively, patient had high myopia(right. -7.25 0.75x18, left. -7.5-0.5x12), normal intraocular pressure(IOP)(right/left: 16/14 mmHg), normal visual field(Humphrey 30-2 visual field)and revealed the tilted discs with symetric optic nerve head cupping(cup-to-disc ratio, 0.70), parapapillary atrophy. Bilateral LASIK keratorefractive surgery was on the same day and intraoperative complication was not noted. After the first operative visit day, examination revealed uncorreted visual acuity right 0.8 and left 0.6 but scotoma was reported. Three months later, Humphrey 30-2 visual field revealed a near-superior altitudinal defect in the right eye and nasal side visual field defect in the left eye. Best corrected visual acuity was 1.0 in the right eye, 0.8 in the left eye. Repeated visual fields over a 11-month period postoperatively showed stability of the defect, with IOP of 12 mmHg to 15 mmHg in each eye. We considered LASIK uses a microkeratome vaccum ring to make a corneal flap, transient elevation of IOP alters the microcirculation of optic nerve head and may have precipitated visual field defect.

Key Words: LASIK;Vacuum ring;Visual field defect