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Biomedical subjects

S L Forstot

Publications and source records attributed to S L Forstot.

At least 19 recordsLinked to original sources
PubMed2001

Infectious keratitis after laser refractive surgery.

PURPOSE: To report two cases of infectious keratitis, one fungal after photorefractive keratectomy (PRK) and the other bacterial after laser in situ keratomileusis (LASIK). DESIGN: Two interventional case reports. PARTICIPANTS: Case 1 is a male who was seen 3 weeks after PRK with a corneal ulceration. Case 2 involves a female who was seen 7 weeks after LASIK with interface granularity. RESULTS: Cultures in case 1 were identified as Scopulariopsis species, and despite intensive treatment, a therapeutic penetrating keratoplasty (PK) was eventually performed. Case 2 had cultures identified as Mycobacterium chelonae and also ultimately required a therapeutic PK. CONCLUSIONS: Two unusual infectious keratitides are reported after different laser refractive surgery techniques.

Adult↗
PubMed2000

Topical mitomycin-C for subepithelial fibrosis after refractive corneal surgery.

OBJECTIVE: To determine the effectiveness of mitomycin-C (MMC), 0.02%, in preventing recurrence of corneal subepithelial fibrosis after debridement and/or keratectomy in patients who have undergone refractive corneal surgery. DESIGN: Noncomparative case series. PARTICIPANTS: Eight eyes of five patients with corneal subepithelial fibrosis who had previously undergone radial keratotomy (n = 4) or photorefractive keratectomy (n = 4). INTERVENTION: All eyes underwent epithelial debridement followed by a single intraoperative application of MMC (0.02%) for 2 minutes followed by saline irrigation. The eyes were then patched, or a bandage contact lens placed until epithelial healing was complete. MAIN OUTCOME MEASURES: Corneal clarity and best-corrected visual acuity (BCVA). RESULTS: In all cases, the cornea remained clear with no recurrence throughout the follow-up period (6-25 mos., mean, 13.8 mos). No adverse reactions were reported. BCVA improved in all cases. CONCLUSIONS: Subepithelial fibrosis can be a visually disabling condition after refractive corneal surgery. Topical application of MMC (0.02%) may be a successful method of preventing recurrence of subepithelial fibrosis after debridement.

Administration, Topical↗
PubMed1998

Optical iridectomy for corneal opacities in Peter's anomaly.

Three children were born with partial corneal opacity and anterior segment anomalies but no cataract (Peter's anomaly type 1). In each affected eye, the corneal scar was off center and encroached on the visual axis. Glaucoma (if present) was controlled medically or surgically, after which an optical iridectomy was performed in each eye (in lieu of a penetrating keratoplasty). After surgery, in all patients the pupil extended beyond the corneal opacity and the corneal opacity decreased slightly. All could fixate and follow around the opacity. Optical iridectomy should be considered in selected cases of congenital corneal opacities.

Anterior Eye Segment↗
PubMed1994

Calcific band keratopathy associated with the use of topical steroid-phosphate preparations.

OBJECTIVE: To report a possible adverse effect of topical steroid-phosphate preparations and to identify factors that may contribute to the development of this effect. DESIGN: The medical records of five patients who developed calcium deposition in the cornea were reviewed and analyzed for possible contributing factors. PATIENTS: Five cases of calcium deposition in the cornea associated with the use of topical steroid-phosphate preparations are described. Scrapings from the cornea and/or specimens obtained at keratoplasty were available in all cases. These cases had the following characteristics in common: use of steroid-phosphate preparations (n = 5); multiple topical drops (n = 5); penetrating keratoplasty (n = 3); presence of epithelial defects (n = 4); history of herpetic stromal keratitis (n = 3) [corrected]; and history of iritis (n = 3). A hypothesis explaining calcium deposition in association with steroid-phosphate preparations is presented. CONCLUSIONS: We recommend withdrawal of steroid-phosphate preparations in patients who develop band keratopathy.

Administration, Topical↗
PubMed1993

Pupillary capture of a posterior chamber lens following convulsive seizures.

Total pupillary capture of the optic of a posterior chamber intraocular lens (PC-IOL) occurred over 1 year after implantation, following severe, convulsive seizures. We suggest that the generalized seizures and associated extraocular muscle contractures created significantly elevated vitreous pressure, which caused anterior displacement of the IOL. To our knowledge, this is the first reported case of late pupillary capture of a PC-IOL following severe, convulsive seizures.

Aged↗
PubMed1989

Radial keratotomy in high myopia: an evaluation of one technique.

Ninety-one consecutive eyes of 53 patients with refractive errors of -6.00 to -11.50 diopters (D) spherical equivalent (mean, -7.48 D) underwent radial keratotomy with redeepening and astigmatic incisions. All eyes were examined at six months, and 65.9% had one year of follow-up (mean follow-up, 11.65 months). In retrospective analysis of this group, 78% of patients had greater than or equal to 20/40 uncorrected visual acuity at six months with 76% at one year. In 59.3% of patients they were with 1.0D of emmetropia at six months with 56.7% at one year. Overcorrections (greater than +1.00D) with 11.1% at six months and 13.3% at one year. Undercorrections (greater than -1.00D) were 29.6% at six months and 30% at one year. Four patients lost two lines of Snellen visual acuity.

Adult↗
PubMed1988

Corneal edema related to accidental Hibiclens exposure.

Five patients developed corneal edema presumably caused by accidental preoperative ocular exposure to Hibiclens. In all cases, the patients complained of ocular pain after surgery. Conjunctival inflammation and corneal epithelial defects were found in all patients. Between two and ten weeks after exposure, stromal and epithelial edema, with a predilection for the inferior cornea initially, developed in all patients. The corneal edema resolved in three patients in approximately six months, leaving mild stromal scarring and reduced endothelial cell counts. The corneal edema in the other two patients progressed to diffuse bullous keratopathy, which eventually required penetrating keratoplasty. We recommend that Hibiclens be avoided in preoperative preparation of the facial skin to prevent accidental ocular exposure.

Accidents↗
PubMed1988

Trauma after radial keratotomy.

Eight cases of trauma are reported in seven patients after radial keratotomy. Trauma occurred 2 weeks to 53 months postoperatively. There was mild, moderate, and severe trauma to the orbit and globe region in five patients and severe, direct trauma to the globe in three patients. The incisions remained intact in six cases. Two patients with severe, direct, ocular trauma opened a radial incision, had flat chambers, and were treated successfully with bandage lenses. In all eight instances of trauma, there was no permanent change from pre-trauma acuity (with or without correction).

Anterior Chamber↗
PubMed1988

Radial keratotomy.

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Clinical Trials as Topic↗
PubMed1988

Modified relaxing incision technique for postkeratoplasty astigmatism.

A modified relaxing incision technique for postkeratoplasty astigmatism is described in this article. Following the initial, standard relaxing incision techniques, a planned spreading and recutting of the initial relaxing incision was performed at 1-3-week intervals following the initial surgery. The wound may be deepened and lengthened if more effect is needed. The number of spreading and recutting procedures is also dependent on the effect required. This additional procedure may be performed for late regression of the desired effect. The endpoint for the procedure is corneal astigmatism that will allow either spectacle or contact lens correction, depending on the patient's visual needs. Corrections of greater than 10 D of astigmatism are possible. The technique allows for evaluation of the corneal astigmatism with no sutures in place. No complications of the recutting and spreading procedure have been noted. There have been no microperforations or macroperforations requiring suturing, no infections, and no graft rejections following the procedures. Seven cases using the modified relaxing incision technique are described.

Astigmatism↗