Changes in the visual field following laser in situ keratomileusis for myopia

Abstract

In patients with low myopia, the VF undergoes a transitory increase in diffuse defects 6 months after surgery, with spontaneous recovery at 12 months after LASIK procedure. Possible explanations for these findings are discussed.

Ocular blood-flow hemodynamics before and after application of a laser in situ keratomileusis ring

“…9 In the present study, all blood-flow parameters returned to normal levels immediately after microkeratome removal, which is perhaps less detrimental to physiology than extended alterations. Although the current study provides no evidence relating to permanent alterations in visual functional parameters after microkeratome application, research suggests that transient IOP elevation during LASIK does not lead to permanent visual loss measured via perimetry [27][28][29][30] or retinal nerve fiber layer 31,32 in most normal healthy eyes. The rare reports of visual field defects after LA-SIK 4-7,33 are not fully understood but may represent an injury after microkeratome application in patients more vulnerable to IOP elevation.…”

The effective corneal refractive surface as a function of a point in visual space: a three‐dimensional analysis

“…, 2005; Austin et al. , 2006; Lleo‐Perez and Sanchis Gimeno, 2007; Montes‐Mico and Ferrer‐Blasco, 2007) a loss of peripheral retinal sensitivity after excimer refractive surgery.…”

Pneumatic Trabeculoplasty versus Argon Laser Trabeculoplasty in Primary Open-Angle Glaucoma

“…During LASIK, IOP increases to 85–120 mm Hg during the suction phase [20,21,22,23,24] and deformation of the eye (1.125 mm axial length increase, mainly affecting the posterior segment) [25] and reversible optic nerve head changes have been detected [26]. However, after several months, no alterations were found in the optic disc, retinal nerve fiber layer [27,28,29], and visual field [30,31]. But 1 week after IOP increase (64 mm Hg for <30 s) obtained by suction ring in 100 glaucomatous and control eyes, a significant MD decline (with unchanged PSD) was found by matrix perimetry in 6 glaucomatous and 3 control eyes; this could suggest that some glaucomatous eyes could be more susceptible to transient IOP increase [32].…”