ABSTRACT This study aimed to critically review the literature regarding the magnitude, orientation, and correlation between anterior, posterior, and total corneal astigmatism, as well as their clinical implications in normal eyes, in patients with keratoconus, and in individuals evaluated in the context of refractive surgery. An integrative literature review was conducted, with a systematic search of studies published between 2010 and 2025. Observational studies that assessed corneal astigmatism using Scheimpflug tomography in healthy eyes, eyes with keratoconus, or eyes evaluated […]

ABSTRACT This report aimed to evaluate the evolution of topography, astigmatism, and visual acuity in eyes with keratoconus that underwent intra-stromal ring implant surgery. The report compared these results with those of contralateral, non-operated eyes. The goal was to confirm whether the intra-stromal ring implant surgery could also slow the progression of the disease. Four cases of young and adult patients who underwent corneal ring implant surgery in one eye were analyzed, with clinical and topographic follow-up for up to […]

ABSTRACT Objective: To develop and validate a prototype of magnifying glasses to improve precision and safety in the extraction of corneal foreign bodies. Methods: The prototype was made on a 3D printer using ABS material, containing a 30x magnifying glass and LED lighting. Validation was carried out by 22 specialist ophthalmologists using the Delphi method, who evaluated the device’s functionality, usability, aesthetics, safety, and durability. Statistical analysis included the Content Validity Index (CVI) and McDonald’s Omega coefficient. Results: The experts […]

ABSTRACT Objective: To identify corneal epithelial thickness profiles for early keratoconus diagnosis with the aid of Artificial Intelligence. Methods: A total of 496 eyes (306 normal and 190 with keratoconus) were analyzed using optical coherence tomography images. Results: Epithelial segmentation revealed distinct patterns between groups, highlighting early changes in epithelial thickness in keratoconus eyes. The findings reinforce the potential of artificial intelligence in disease screening, enabling a more precise and objective diagnostic approach. Conclusion: Implementing algorithms such as k-means can […]

ABSTRACT Objective: To analyze visual performance in digitally active volunteers using ScCLs. Methods: ScCLs were fit in seven participants and evaluated during four visits over 45 consecutive days. Reading speed tests were performed with MNREAD-P charts and texts developed by the Department of Speech Therapy of the authors’ institution. Post-study, participants were interviewed and completed the 8-item Contact Lens Dry Eye Questionnaire (CLDEQ-8). Results: During ScCL wear, 85.7% showed increased reading speed on MNREAD-P charts, with similar results on the […]

ABSTRACT Our objective was to evaluate and describe the techniques and outcomes of limbal stem cell transplantation in patients with limbal stem cell deficiency after chemical burn of the ocular surface. We performed this literature review using the PubMed® (MEDLINE), Cochrane and Embase (Elsevier) databases. Of the 313 studies found, 276 were removed as duplicates and ineligible based on the inclusion and exclusion criteria; 17 articles remained after full reading, classified according to the criteria of interest, and 1 article […]

ABSTRACT Thygeson’s keratitis is a chronic bilateral inflammation of the cornea, characterized by recurrent intraepithelial opacities, intense photophobia, and visual fluctuations, especially in children. Topical corticosteroids are effective, but their prolonged use carries risks and frequent recurrences. We report the case of an 11-year-old girl with refractory Thygeson’s keratitis treated with topical tacrolimus 0.03%. After an initial response to corticosteroids, an early recurrence occurred within 15 days. With the introduction of tacrolimus, there was complete resolution of signs and symptoms, […]

ABSTRACT Objective: To evaluate the tomography accuracy of Cirrus 5000 optical controls in patients with or without keratoconus for pachymetry measurements by image scanning patterns. Methods: A prospective, cross-sectional and mixed study was performed in 20 eyes, where 37 parameters of each sample was analyzed and repeated 5 times. Results: Only four samples (vertex full, maximum epithelial pachymetry at 5 to 7.0mm, maximum epithelial pachymetry at 7 to 9.0mm and epithelial pachymetry difference between minimum and average) samples showed a […]