bluuebunny/crossref_metadata_2025_split huggingface dataset:
Photorefractive Keratectomy for Astigmatism With the Meditec MEL 60 Laser
Authors: Nagy Zoltán Z , Krueger Ronald R , Süveges Ildikó 
Published: April 2021

ABSTRACT
PURPOSE: To evaluate the results of photorefractive keratectomy (PRK) in eyes treated with astigmatic refractive errors.
METHODS: Nine hundred forty eyes were treated with the Aesculap M?dit?e MEL 60 ArF excimer laser. Treatment groups were: Group 1 (n=746) eyes with compound myopic astigmatism, Group 2 (n=104) eyes with compound hyperopic astigmatism, Group 3 (n=75) eyes treated for mixed astigmatism, and Group 4 (n=15) eyes with simple myopic astigmatism (negative cylinder).
RESULTS: In Group 1, the preoperative spherical equivalent refraction of -6.10 D with an average of -1.50 D cylinder decreased to -0.95 D with -0.13 D cylinder; uncorrected visual acuity (UCVA) of 20/40 or better was achieved in 86% (642/746 eyes); 20/20 or better in 58% (433/746 eyes); 0.8% (6/746 eyes) lost two lines of spectacle-corrected visual acuity (SCVA); 74% (552/746 eyes) were within ?0.50 D and 93% (694/746 eyes) were within ?1.00 D of target refraction. In Group 2, preoperative mean +4.57 D spherical equivalent refraction with an average of +1.57 D cylinder decreased to +1.13 D with +0.38 D cylinder; UCVA of 20/40 or better was achieved in 84% (87/104 eyes); 20/20 or better in 46% (48/104 eyes); 14,4% (15/104 eyes) lost two or more lines of SCVA; 52% (54/104 eyes) were within ?0.50 D and 82% (85/104 eyes) were within ?1.00 D of target refraction. In Group 3, mean preoperative -4.20 D cylinder and +3.00 D spherical equivalent refraction decreased to -0.50 D cylinder and -0.50 D spherical equivalent refraction; UCVA of 20/40 or better was achieved in 83% (62/75 eyes); 20/20 or better in 32% (24/75 eyes); 13.3% (10/75 eyes) lost two or more lines of SCVA. In Group 4, mean preoperative -3.98 D cylinder decreased to -0.62 D cylinder; UCVA of 20/40 or better was achieved in 60% (9/15 eyes); none of the eyes achieved 20/20 or better; SCVA remained stable in 6.6% (1/15 eyes) and decreased two or more lines in 20.0% (3/15 eyes); 20% (3/15 eyes) were within ?0.50 D and 53.3% (8/15 eyes) were within ?1.00 D of target refraction.
CONCLUSION: PRK with the M?dit?e MEL 60 laser produced the best results in eyes with compound myopic astigmatism (Group 1). In all other groups, results were less predictable. [J Refract Surg 2001;17:441-453]
Contrast Sensitivity After Posterior Chamber Phakic Intraocular Lens Implantation for High Myopia
Authors: Jiménez-Alfaro Ignacio , Gómez-Tellería Germán , Bueno José Luis , Puy Pilar 
Published: April 2021

ABSTRACT
PURPOSE: To evaluate contrast sensitivity after posterior chamber phakic intraocular lens (PIOL) implantation for the correction of high myopia.
METHODS: Twenty eyes of ten patients had a posterior chamber phakic intraocular lens (Staar ICL) implanted to correct high myopia. Mean preoperative myopia was -14.10 ? 2.70 D. Follow-up was 24 months for all patients. Contrast sensitivity was tested with best spectacle-corrected visual acuity preoperatively and 3, 6, 12, 18, and 24 months postoperatively.
RESULTS: Contrast sensitivity increased after surgery in all spatial frequencies. Normal values were achieved for low and intermediate spatial frequencies (3 and 6 c/deg). However, in spite of the improvement, values were still below normal for high spatial frequencies (12 and 18 c/deg). When the first postoperative examination was not considered, there were no statistically significant differences in contrast sensitivity values at different postoperative periods.
CONCLUSION: Contrast sensitivity increased after posterior chamber phakic intraocular lens implantation (Staar ICL) in all spatial frequencies when compared to preoperative contrast sensitivity (best spectacle-corrected). [J Refract Surg 2001;17:641-645]
Monocular Diplopia Related to Asymmetric Corneal Topography After Laser in situ Keratomileusis
Authors: Takei Kazuo , Sano Yuta , Achiron Leonard R , Carr Jonathan D , Stulting R Doyle , Thompson Keith P , Waring George O 
Published: April 2021

ABSTRACT
PURPOSE: To show a specific relationship between monocular diplopia and corneal refractive asymmetry after laser in situ keratomileusis (LASIK).
METHODS: One hundred thirty-eight eyes of 98 patients who underwent IASIK for myopia between -2.12 and -17.75 D were examined under room-lighted conditions. We examined 51 eyes at 2 weeks, 46 eyes at 3 months, 32 eyes at ? months, and 9 eyes at 1 year after LASD!. We attempted to correlate the presence of monocular diplopia with their corneal topographical features.
RESULTS: Eight eyes of five patients (five eyes at 2 weeks, three eyes at 3 months after LASIK) produced symptoms of monocular diplopia. These symptomatic patients had a common corneal topographical feature caused by decentralized or inhomogeneous ablation. Every pupillary area in the patients' topographies contained steeper and flatter areas. The range of refractive power variation in these asymmetric areas was at least 1.50 D. The location of the secondary image correlated with the direction of the steeper area in all eight eyes. Pinhole viewing eliminated or reduced the prominence of secondary images in every case.
CONCLUSION: Monocular diplopia following LASDI appears to correlate with postoperative corneal refractive power variation inside th? pupillary area, caused by decentralized or inhomogeneous ablation. [J Refract Surg 2001;17:652-?57]
Confocal Microscopic Imaging of Reticular Folds in a Laser in situ Keratomileusis Flap
Authors: Kohnen Thomas , Bühren Jens , Baumeister Martin 
Published: April 2021

ABSTRACT
PURPOSE: To report the clinical and confocal microscopic characteristics of reticular folds (mudcracks) in a cornea after laser in situ keratomileusis (LASIK).
METHODS: A 30-year-old male showed reticular flap folds on slit-lamp examination 1 week after LASlK. In addition to slit-lamp biomicroscopy, confocal in vivo microscopy was performed.
RESULTS: Examination with a confocal whitelight slit-scanning microscope revealed distinct folds of Bowman's layer and underlying microfolds throughout the flap stroma. After flap re-lifting, no changes could be determined, either clinically or by confocal microscopy. At 12 months following the procedure, best spectacle-corrected visual acuity was slightly improved, but the folds, as imaged by confocal microscopy, still persisted.
CONCLUSIONS: In the present case, reticular folds after LASIK involved the entire thickness of the flap. Simple flap lifting was not sufficient for smoothing out the folds. [J Refract Surg 2001; 17:689-691]
Laser Epithelial Keratomileusis: Outcome of Initial Cases Performed by an Experienced Surgeon
Authors: Chalita Maria Regina , Tekwani Navin H , Krueger Ronald R 
Published: April 2021

ABSTRACT
PUBPOSE: To evaluate refractive outcome and objective clinical data, and determine efficacy, predictability, and safety of laser epithelial keratomileusis (LASEK) for myopic treatments.
METHODS: We performed a retrospective noncomparative single-surgeon case series on the first 20 LASER procedures (Alcon LADARVision 4000 laser). Mean patient age was 41.2 years (range 21 to 60 yr): 13 men and 7 women. Mean preoperative spherical equivalent refraction was -6.47±2.78 D. Corneal haze, uncorrected and spectacle-corrected visual acuity and manifest refraction were evaluated.
RESULTS: Of 20 eyes studied, 3 were corrected for monovision. In the non-monovision group, 20/40 or better visual acuity was achieved in 94% (16 eyes) at 1 month, 100% (13 eyes) at 3 months, and 91% (10 eyes) at 6 months after LASEK; 20/20 or better was achieved in 12% (2 eyes) at 1 month, 46% (6 eyes) at 3 months, and 45% (5 eyes) at 6 months. Corneal haze at 1 month was grade 0.5 in 35% (7 eyes), 1 in 20% (4 eyes) and 2 in 10% (2 eyes). At 3 months, 62% (12 eyes) had grade 0.5 and 31% (6 eyes) had grade 1. At 6 months, 58% (12 eyes) had grade 0.5, 25% (5 eyes) had grade 1, and 8% (2 eyes) had grade 2.
CONCLUSIONS: LASEK is a challenging procedure. Creating the epithelial flap is not simple and may have contributed to the high haze incidence in our study. [J Refract Surg 2003;19:412-415]
Rupture of Radial Keratotomy Incisions by Blunt Trauma 6 Years After Combined Photorefractive Keratectomy/Radial Keratotomy
Authors: Artola Alberto , Ayala María J , Ruiz-Moreno José M , De La Hoz Fernando , Alió Jorge L 
Published: April 2021

ABSTRACT
PURPOSE: To report a case of traumatic corneal rupture that occurred 6 years previous, following combined radial keratotomy (RK) and photorefractive keratectomy (PRK).
METHODS: A 28-year-old man experienced a severe direct trauma to the right eye. Upon initial examination, a ruptured globe was diagnosed. Four of the eight radial incisions were ruptured with extrusion of intraocular tissues. The patient was also diagnosed with a fracture of the medial wall of the right orbit. The patient received immediate surgery during which the radial incisions that had been torn were stitched with a suture.
RESULTS: Following the postoperative period, the patient had visual acuity of light perception.
CONCLUSION: PRK, carried out on a cornea already treated with RK, may increase the likelihood of rupture in blunt trauma. [J Refract Surg 2003;19:460-462]
Correlation of Pupil Sizes Measured With a Mesopic Infrared Pupillometer and a Photopic Topographer
Authors: Periman Laura M , Ambrosio Renato , Harrison Devin A , Wilson Steven E 
Published: April 2021

ABSTRACT
PURPOSE: To determine if videokeratography-based pupil measurements are an accurate method of estimating pupil size under mesopic conditions.
METHODS: Sixty patients who had a preoperative work-up for refractive surgery participated in the study. A single observer obtained detailed pupil measurements with the Colvard pupillometer under standardized lighting conditions. The same observer recorded pupil size measurements obtained automatically when corneal topographic analysis was performed with Humphrey videokeratography.
RESULTS: The Colvard pupillometry low light group was statistically different (P<.0001) from the Humphrey videokeratography automatic pupil measurement group. We calculated the value at which the Humphrey pupil measurements can accurately predict which patients would have pupil diameters ≥6.5 mm under low mesopic conditions. By adding a constant of 2.6 mm to the Humphrey videokeratography pupil measurement, 100% of patients with a pupil diameter 5=6.5 mm under low mesopic conditions were detected (sensitivity 100%). However, the ability to correctly reject those patients who do not have pupil diameters >6.5 mm under low mesopic conditions was lower at 55% (specificity).
CONCLUSION: Videokeratography units can be used as a rapid, simple, and accurate method of predicting pupil size under mesopic conditions for potential refractive surgery patients and can provide a permanent record of pupil size. Care should be taken when relying on topography pupil sizes and more accurate measurements of mesopic and scotopic pupil sizes should be obtained. [J Refract Surg 2003;19:555-5591
Ocular Surface Management of Photorefractive Keratectomy and Laser in situ Keratomileusis
Authors: Albietz Julie M , McLennan Suzanne G , Lenton Lee M 
Published: April 2021

ABSTRACT
PURPOSE: To examine the effects of keratorefractive surgery and ocular surface management on goblet cell density, dry eye symptom incidence, and spherical equivalent refraction.
METHODS: We performed a retrospective analysis of four myopia groups: Untreated controls (n = 53); PRK (n = 51); LASIK without ocular surface management (n = 56); LASIK with ocular surface management (n = 140). Ocular surface management involved the routine use of non-preserved artificial tears and other lubricants before, during, and after surgery. Lid hygiene procedures, topical antiinflammatory agents, and punctal plugs were used on indication. Assessments were conducted before and up to 12 months after surgery (right eyes only in patients with both eyes operated, and in the left or right eye in patients with one eye operated).
RESULTS: Surgery caused a significant reduction in goblet cell density, with the greatest reduction in the LASIK without ocular surface management group. No significant differences were detected in dry eye symptoms or spherical equivalent refraction between PRK and LASIK without ocular surface management. Ocular surface management significantly minimized LASIK-induced decreases in goblet cell density and was associated with significantly less myopic outcomes at months 1 to 3 and 6 to 9 after LASIK. After surgery (1 to 3 mo), dry eye symptoms were significantly lower in the LASIK with ocular surface management group. In all groups, significant inverse correlations existed between goblet cell density and dry eye symptoms.
CONCLUSIONS: Ocular surface management minimized the negative impact of LASIK on goblet cell density and reduced dry eye symptoms. Without ocular surface management, goblet cell density and dry eye symptoms after LASIK were similar to or worse than after PRK. [J Refract Surg 2003;19:636-644]
Relationship Between Cycloplegic and Wavefront-derived Refraction
Authors: de Castro Luis E Fernández , Sandoval Helga P , Al Sarraf Oday , Vroman David T , Solomon Kerry D 
Published: April 2021

ABSTRACT
PURPOSE: To compare cycloplegic refractions to preoperative wavefront-derived refractions from three Hartmann-Shack-based wavefront devices.
METHODS: Ninety-nine eyes of 55 subjects were evaluated preoperatively using the LADARWave, WaveScan, and Zywave aberrometers. With cycloplegic refraction as the standard, the spherical equivalent refraction, sphere, and cylinder were compared to the wavefront-derived refractions using the three wavefront devices.
RESULTS: The LADARWave unit showed the highest correlation between wavefront-derived sphere and mean spherical equivalent refraction values relative to cycloplegic refraction, followed by Zywave and WaveScan. The WaveScan unit exhibited higher variability than the LADARWave or Zywave. Although Alcon Laboratories (LADARWave) and Bausch & Lomb Surgical (Zywave) recommend dilation, VISX specifically recommends against dilation in their WaveScan unit. All devices showed high cylinder error vectors when the cycloplegic cylinder was greater than 1.00 D.
CONCLUSION: Although wavefront-derived refractions appeared to correlate well to cycloplegic refractions, further research is required to reduce variability and improve the calculation of cylinder terms. [J Refract Surg 2003;19:S677-S681]
Neodymium:YAG Laser Posterior Capsulotomy: The First 100 Cases at UCLA
Authors: Gardner Kathryn M , Straatsma Bradley R , Pettit Thomas H 
Published: April 2021

ABSTRACT
Initial anatomic success was reported in 97 of the first 100 neodymium:YAG laser posterior capsulotomies performed at the Jules Stein Eye Institute. Visual acuity improved in 90 patients, was unchanged in five, and decreased in five. In the five patients with decreased visual acuity after posterior capsulotomy, the decrease was unrelated to capsulotomy and caused by progression of preexisting retinal disease. Our experience suggests that attention to patient evaluation and surgical technique can help minimize complications and assure best results.
Transscleral Cyclocoagulation Using a Neodymium:YAG Laser
Authors: Wilensky Jacob T , Welch David , Mirolovich Milan 
Published: April 2021

ABSTRACT
A series of pigmented rabbit eyes were treated with pulsed 10 msec (free running mode) neodymium:YAG laser burns to achieve transscleral cyclocoagulation. Grossly evident burns were created in the ciliary body with laser pulses of 1.5 joules of energy. Sustained reduction in intraocular pressure was obtained when 30 such laser burns were made in an eye.
Pupillary Block Associated With Posterior Chamber Lenses
Authors: Willis Dan A , Stewart Robert H , Kimbrough Richard L 
Published: April 2021

ABSTRACT
Two patients developed pupillary block glaucoma after extracapsular cataract extraction with implantation of a posterior chamber lens but without peripheral iridectomies. The intraocular pressure of each eye was successfully controlled with laser iridotomy No long-term medication was necessary to control their intraocular pressures.
Design of New Contact Lens for YAG Laser Filtering Procedures
Authors: March Wayne F , Gherezghiher Tseggai , Koss Michael C , Nordquist Robert E 
Published: April 2021

ABSTRACT
A contact goniolens has been developed specifically for YAG laser filtering procedures both for use in unblocking failed surgical filtering procedures and for performing two-stage or one-stage YAG filtering procedures. The design concentrates the YAG energy and maintains a constant small angle with the cornea.
Spontaneous Posterior Bulbar Perforation of Congenital Scieral Coloboma and its Surgical Treatment: A Case Report
Authors: Mori Shigeru , Komatsu Hitoshi , Watari Hironi 
Published: April 2021

ABSTRACT
A 35-year-old male presented with abrupt hypotonic oculopathy caused by a spontaneous bulbar perforation, due to a scleral defect in the equatorial area of the nasal side of the left eye. The scleral defect was surgically repaired using lyophilized homologous dura mater encephali and fibrin glue (Tisseel™).* Highly satisfactory results were obtained.
The pathogenesis of this scleral defect was suspected to involve complex factors related to abnormal retinal development and abnormal ocular muscles. Such a case has not been reported previously.
Trabeculectomy With Implantation of the Mendez Glaucoma Seton: Early Results
Authors: Stewart Robert H , Kimbrough Richard L , Okereke Phyllis C 
Published: April 2021

ABSTRACT
We present the early results in a small series of 12 eyes of 12 patients with uncontrolled glaucoma who underwent trabeculectomy with implantation of a Mendez Glaucoma Seton. All eyes, except one with neovascular glaucoma, had had multiple glaucoma surgery and all, without exception, were on maximal tolerated medical therapy prior to surgery.
The follow-up period ranged from one and one fourth to three and three fourths months. The surgical technique was the same in all cases.
Our success rate was 33.3% or 40%, if one eye with persistent hypotonia could be counted as a success. This result is inferior to those quoted in the literature with the use of other types of setons, and especially to the results of Dr. Antonio Mendez who used a similar Implant.
An Upper Eyelid Cyst from Migration of a Hard Corneal Contact Lens
Authors: Benger Ross S , Frueh Batley R 
Published: April 2021

ABSTRACT
A migrated polymethylmethacrylate contact lens in the upper eyelid presented as a mass of unknown etiology. The lens had been unknowingly retained in the eyelid for seven years, after it had migrated through the conjunctiva of the superior fornix, and then moved in front of the levator aponeurosis and upper tarsal plate, where it lay encysted by conjunctiva. We believe that having sequestered conjunctival epithelium around the lens explains the minimal nature of the inflammatory and secretory responses necessary to allow such a protracted period of retention.
Proptosis With Mastication: An Unusual Presentation of an Orbital Dermoid Cyst
Authors: Whitney Clayton E , Leone Charles R , Kincaid Marilyn C 
Published: April 2021

ABSTRACT
A 25-year-old woman presented in 1973 with the complaint of proptosis of the left eye with mastication. A firm retrobulbar orbital mass was detected, and diagnosis of possible dermoid cyst was made. She was subsequently lost to follow-up. Computed tomographic (CT) scanning and surgical excision done in 1984 confirmed the presence of an orbital dermoid cyst communicating with the temporal fossa through a bony defect in the lateral orbital wall. We suspect that pressure by the temporalis muscle on the dumbbellshaped cyst caused the proptosis with mastication.
Evaluating the Applications of the Spatially Adaptive Program (SAPRO) in Clinical Perimetry: Part I
Authors: Fankhauser F , Funkhouser A , Kwasniewska S 
Published: April 2021

ABSTRACT
Some clinical application possibilities of a spatially adaptive program (SAPRO) are presented and analyzed. Due to the ability of the program to adapt operationally to the visual field situation that is encountered, useful clinical findings can be obtained, even in patients with complicated visual field disturbances. The spatially adaptive detection mechanism, as well as a simplified bracketing strategy, make it possible to keep the cost/benefit ratio down. Short- and long-term fluctuations, especially when these are large, may compromise the validity of the examination results or place them in doubt. Their effects can be diminished using data reduction methods (averaging). In cases where averaging cannot be applied, one can nevertheless achieve useful results by the appropriate selection of the perimetric visual fields (or portions thereof) that are measured.
A Case of Epithelial Ingrowth Primarily Involving the Lens Capsule
Authors: Bruner William E , Green W Richard , Stark Walter J 
Published: April 2021

ABSTRACT
We describe an unusual case of epithelial ingrowth primarily involving the lens capsule. Four years following removal of the lens and epithelial tissue the eye was quiet with 20/20 acuity. Histopathology showed intraocular epithelium attached to the anterior surface of the lens capsule.
Tattooing of Eyelids: Magnetic Resonance Imaging Artifacts
Authors: Lund Gunnar , Wirtschafter Jonathan D , Nelson J Daniel , Williams Patricia A 
Published: April 2021

ABSTRACT
We describe artifacts (linear densities and distortion of the shape of the globe) on Magnetic Resonance Imaging (MRI) of the brain and orbits that result from the tattooing of human eyelids with iron oxide particles.
Similar artifacts are frequently seen with certain types of external eye cosmetics and dental fillings or braces that contain ferromagnetic materials.
The artifacts are most likely due to the distortion of the local magnetic field by the iron oxide.
The artifact was reproduced when a tattooed pig's ear was scanned. Plain x-ray films did not detect the iron oxide.
These small artifacts should be recognized and not confused with abnormalities due to foreign bodies of surgical material.
Long-Term Results of Keratoplasty in Eyes With Intraocular Lenses
Authors: Alpar John J 
Published: April 2021

ABSTRACT
We present a retrospective study of our patients who had penetrating keratoplasty in eyes which had intraocular lenses in situ. Our results show that although the short-term result was good with any kind of intraocular lenses, the long-term (more than five years) graft survival was better if intraocular lenses with preiridial optics were removed and/or replaced at the time of the grafting with posterior chamber lenses.
Effect of Therapeutic Ultrasound on Intraocular Lenses
Authors: McDonnell Peter J , Quigley Harry A , Green W Richard 
Published: April 2021

ABSTRACT
High intensity, focused ultrasound energy is currently being evaluated as a therapy for glaucoma. The energy is delivered through conjunctiva and sclera to the pars plica ta. The haptics of intraocular lenses may erode into the pars plicata, and we were therefore prompted to study the effects of ultrasound energy on intraocular lenses. The energy is highly absorbed by polymethylmethacrylate (PMMA), resulting in partial melting, vacuolization, and opacification of this material at intensities much lower than those used in the glaucoma treatment. Polypropylene absorbed much less of the energy, resulting in relatively minor morphologic changes with this material. We recommend caution in using this device in eyes with anterior chamber intraocular lenses and eyes with posterior chamber intraocular lenses having PMMA haptics.