Disease relevance of Corneal Topography

• OBJECTIVE: To evaluate the predictability, efficacy, and safety of customized laser in situ keratomileusis (LASIK) based on corneal topography in myopia and myopic astigmatism [1].
• Posterior ectasia and corneal thickness were tested using the Orbscan II Slit Scanning Corneal Topography/Pachymetry System (Orbtek Inc.). Segment thickness varied based on corneal topography analysis and refraction [2].
• Repeatability of corneal topography measurement in keratoconus with the TMS-1 [3].
• METHODS: Thirty-three eyes of 25 patients with primary pterygia were evaluated using corneal topography (TMS), slit-lamp photography, and digital imaging to correlate parameters of pterygium size with induced corneal astigmatism at the 3- and 6-mm optical zones [4].
• These results are indicative that corneal topography may be influenced by strabismus surgery for Graves' disease through alteration of extraocular muscle tension or intraocular pressure [5].

High impact information on Corneal Topography

• Patients were assessed using regular keratometry, corneal topography (TMS-1, simulated keratometry [SimK]), subjective refraction, and best-corrected visual acuity (VA) at each interval [6].
• METHODS: Stability of the corneal topography pattern before surgical decision was observed for at least 6 months with the C-SCAN corneal topography with Ray Tracing (Technomed GmbH, Germany) and the Eye-Sys 2000 Corneal Analysis System (Eye Sys Co., Houston, TX) [7].
• INTERVENTION: Videokeratography was performed with the TMS-2 and the CAS system 2000 [8].
• Correlation of infrared pupillometers and CCD camera imaging from aberrometry and videokeratography for determining scotopic pupil size [9].
• Intraocular pressure (IOP), pupil diameter, and corneal topography were measured before and 40 minutes after instillation of topical pilocarpine 4% or balanced salt solution [10].

Biological context of Corneal Topography

• These patients underwent two complete ophthalmologic examinations (27-month follow-up), including orthoptic evaluation, colour vision test, visual field, corneal topography, electronystagmography, fluorescein angiography, and electroretinography [11].
• Both lumican and keratocan are essential for normal cornea morphogenesis during embryonic development and maintenance of corneal topography in adults [12].

Anatomical context of Corneal Topography

• METHODS: Videokeratography (TMS-1, Tomey) examinations from the LSU Eye Center were randomly divided into training and test sets that each included 32 normal corneas and 106 corneas with previous radial keratotomy or photorefractive keratectomy from 1 month up to 10 years after surgery [13].
• METHODS: The corneal topography of 63 eyes of 43 patients who underwent either strabismus or optic nerve sheath fenestration (ONSF) surgery was measured before and after operation [14].

Associations of Corneal Topography with chemical compounds

• METHODS: Presurgical and postsurgical corneal topography of 16 patients who had PRK with the Summit OmniMed laser were obtained [15].
• Minoxidil-induced alteration of corneal topography after radial keratotomy [16].
• PURPOSE: To assess whether the contact lens to cornea-bearing relationship, as determined from the fluorescein pattern, can be predicted from videokeratography [17].
• Autorefraction, C-Scan corneal topography, Javal keratometry, corneal pachymetry and ultrasonic biometric measurements were carried out at presentation and after metabolic control of blood sugar (plasma glucose profile <200 mg/dl) [18].
• METHODS: Serial corneal topographies with Orbscan were taken and an ablation profile was generated with subsequent treatment using the phototherapeutic keratectomy mode and surface ablation technique [19].

Gene context of Corneal Topography

• It is, however, important to consider this association and obtain a corneal topography to rule out corneal ectasia in patients with HIES [20].
• OBJECTIVE: To characterize corneal topography with INTACS (KeraVision, Inc., Fremont, CA) an ophthalmic device designed to correct myopia, and relate findings to visual performance [21].
• Using a TMS-1 videokeratoscope, corneal topography was measured preoperatively and at 1 week and 1 and 3 months postoperatively [22].
• Higher order optical aberrations were measured in 273 cyclopleged Singaporean school children using a Bausch and Lomb Zywave aberrometer, with 268 of these subjects also undergoing corneal topography measurements (Tomey TMS 2 system) [23].
• PURPOSE: To study the parameters of corneal topography of normal eyes using the Corneal Analysis System (CAS, EyeSys Technologies) to determine the types and frequency of patterns and parameters [24].

Analytical, diagnostic and therapeutic context of Corneal Topography

• Changes in corneal topography after excimer laser photorefractive keratectomy for myopia [25].
• Indices of TMS-1 Corneal Topography System were used to determine corneal surface regularity in subjects wearing contact lenses and normal eyes [26].
• Subjective refractometry (trial lenses), standard keratometry (Zeiss ophthalmometer), and corneal topography (Tomey TMS-1) were performed preoperatively, 6 months after PK, and after first and second suture removal (1.1 +/- 0.2 years; 1.6 +/- 0.2 years) [27].
• CONCLUSION: Scleral buckling was found to induce transient changes in corneal topography producing both myopia and corneal astigmatism [28].
• METHODS: This retrospective study consisted of 15 patients with clinical PMCD, confirmed by videokeratography (TMS-1, Computed Anatomy, Inc., New York, NY) [29].

References