Alan N. Carlson

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OBJECTIVE To determine the causes of postoperative myopia associated with capsular bag distention syndrome (CBDS) and characterize the associated findings. DESIGN Prospective, multicenter, nonrandomized, comparative (self-controlled) trial. PARTICIPANTS Six eyes from six patients had CBDS develop after phacoemulsification and posterior chamber(More)
PURPOSE The purpose of this study was to evaluate the refractive change after Descemet stripping automated endothelial keratoplasty (DSAEK) surgery and its correlation with graft thickness and diameter. METHODS We retrospectively analyzed the refractive outcomes of 45 cases of DSAEK surgery that were performed at Duke University Eye Center between August(More)
PURPOSE To study the leading indications and changing trends for penetrating keratoplasty (PK) over the past 3 decades. METHODS This is a retrospective review of 696 cases of PK. The indications for PKs performed at the Duke University Eye Center during the years 1980-1981, 1990- 1991, and 2000-2001 were tabulated to determine trends over the past 3(More)
Intraocular lens (IOL)-related complications are caused primarily by mechanical trauma, inflammatory or infectious complications, or optical problems. Complications may occur at the time of surgery or be the result of an ongoing postoperative process. Mechanical and inflammatory injury may produce corneal decompensation, cystoid macular edema, hyphema,(More)
PURPOSE To investigate the rates of Descemet's stripping automated endothelial keratoplasty (DSAEK) graft dislocation and failure in glaucomatous eyes, including eyes with history of trabeculectomy and/or aqueous shunts. METHODS A retrospective, case-control study on a total of 424 consecutive eyes undergoing DSAEK at an academic setting compared 96(More)
We report the development of fungal scleritis in a 53-year-old man after uncomplicated cataract surgery. Histopathology and culture identified the organism as Aspergillus flavus. Clinically, the patient worsened on treatment with oral ketoconazole and topical amphotericin B with progression of multifocal scleral nodules and necrosis. Resolution of(More)
This paper presents a technique for learning to assess terrain traversability for outdoor mobile robot navigation using human-embedded logic and real-time perception of terrain features extracted from image data. The methodology utilizes a fuzzy logic framework and vision algorithms for analysis of the terrain. The terrain assessment and learning(More)
OBJECTIVE To evaluate the influence of cataract extraction on the results of visual field testing in chronic open-angle glaucoma. DESIGN We performed automated perimetry within 6 months before and after phacoemulsification and combined trabeculectomy in 24 consecutive patients with chronic open-angle glaucoma. Eyes were pharmacologically dilated and were(More)
PURPOSE To determine whether a three-year fluocinolone acetonide sustained drug delivery system can be implanted safely at the same time that phacoemulsification and intraocular lens (IOL) implantation are performed for a visually significant cataract in eyes with uveitis. DESIGN Retrospective, single-center case series. METHODS All consecutive patients(More)
A modification of the original Miyake technique of posterior photography of human eyes obtained postmortem is presented. A detailed description of globe preparation and equipment is described. Use of modern technology including a high magnification microscope system and video camera permits dynamic or realtime observations of tissue effects of various(More)