Effects of lotrafilcon A and omafilcon A bandage contact lenses on visual outcomes after photorefractive keratectomy.

Purpose: To evaluate postoperative healing between bandage contact lenses with high and low oxygen permeability in patients having photorefractive keratectomy (PRK).

Setting: Center for Refractive Surgery, Walter Reed Army Medical Center, Washington, DC, USA.

Methods: This retrospective study compared patients receiving a high-oxygen-transmission bandage contact lens (Focus Night & Day [N&D], Ciba Vision; n = 92) and those receiving a low-oxygen-transmission lens (Proclear, Cooper Vision; n = 114) after PRK.

Night firing range performance following photorefractive keratectomy and laser in situ keratomileusis.

Objective: To investigate the effect of laser refractive surgery on night weapons firing.

Methods: Firing range performance was measured at baseline and postoperatively following photorefractive keratectomy and laser in situ keratomileusis. Subjects fired the M-16A2 rifle with night vision goggles (NVG) at starlight, and with iron sight (simulated dusk).

Anterior segment measurements using digital photography: a simple technique.

Purpose: The purpose of this study is to describe a simple method of measuring anterior segment lesions from digital slit lamp images and confirm reliability of the technique.

Methods: Ten reference photos were taken of a PD ruler, refocusing on the ruler for each photo. Using Adobe Photoshop, the number of pixels per millimeter squared (area) and 1 mm (linear) were recorded for each photo.

Scattered laser radiation and broadband actinic ultraviolet plasma emissions during LADARVision excimer refractive surgery.

Purpose: To evaluate the potential occupational health hazards associated with scattered actinic ultraviolet (UV) laser radiation and broadband actinic UV plasma emissions during refractive surgery.

Setting: Center for Refractive Surgery, Walter Reed Army Medical Center, Washington, D.C.

The effect of fourth-generation fluoroquinolones gatifloxacin and moxifloxacin on epithelial healing following photorefractive keratectomy.

Purpose: To compare the rate of epithelial healing following photorefractive keratectomy (PRK) with two commercially available fourth-generation fluoroquinolones, gatifloxacin (Zymar, Allergan, Irvine, California) and moxifloxacin (Vigamox, Alcon Laboratories, Fort Worth, Texas).

Design: Double-masked, randomized, prospective trial.

Methods: Thirty-five subjects received gatifloxacin in one eye and moxifloxacin in the fellow eye following PRK with a 9.

Miotic effect of brimonidine tartrate 0.15% ophthalmic solution in normal eyes.

Purpose: To evaluate the effect of brimonidine tartrate 0.15% ophthalmic solution (Alphagan P) on pupil diameter in eyes of healthy adults under different luminance conditions.

Setting: Center for Refractive Surgery, Ophthalmology Service, Department of Surgery, Walter Reed Army Medical Center, Washington, DC, USA.

Central corneal pachymetry in patients undergoing laser in situ keratomileusis.

Objective: To report the preoperative ultrasonic central pachymetric measurements on a large group of eyes undergoing laser-assisted in situ keratomileusis (LASIK) surgery for myopia and myopic astigmatism, to determine whether central corneal thickness is correlated with other geometric features of the eye or is correlated with age or gender, and to discuss the resulting limitations on possible ablation depths.

Design: Prospective, multisite, cross-sectional study.

Participants: Eight hundred ninety-six eyes in 450 patients from 21 to 66 years of age.

Management of postkeratoplasty astigmatism.

Many factors have led to the improved success rate for clear corneal grafts after penetrating keratoplasty. Unfortunately, postoperative corneal astigmatism commonly occurs and can produce significant visual impairment. Astigmatic correction may include spectacle correction or contact lenses, but if this fails, then surgical options are considered.