Visual perception changes and optical stability after intracorneal ring segment implantation: comparison between 3 months and 1 year after surgery
dc.creator | Paranhos, Juliane de Freitas Santos | |
dc.creator | Ávila, Marcos Pereira de | |
dc.creator | Paranhos Jr., Augusto | |
dc.creator | Schor, Paulo | |
dc.date.accessioned | 2019-05-16T14:23:19Z | |
dc.date.available | 2019-05-16T14:23:19Z | |
dc.date.issued | 2011 | |
dc.description.abstract | Purpose: To prospectively evaluate intracorneal ring segment (ICRS) implantation on quality of life (QoL) of patients with keratoconus changes and identify factors responsible. Methods: Sixty-nine eyes of 42 keratoconus patients were implanted with the Keraring (Mediphacos, Belo Horizonte, Brazil). Best corrected visual acuity (BCVA), refraction, and steep keratometry were analyzed 3 months and 1 year after surgery. All patients self-administered the National Eye Institute Refractive Error Quality of life instrument at 2 time points: after having worn best correction for at least 30 days since evaluation (mean 4 months after surgery) and 1 year after surgery. To analyze if the use of the appropriate correction at 1 year follow up had any impact on visual acuity and V-QoL, patients were divided into 2 groups: group A (appropriate correction) and B (not appropriate correction). Results: After 1 year, QoL changes related to scales ‘clarity of vision’, ‘near vision’, and ‘far vision’. Keratometric values, sphere, and spherical equivalent did not differ significantly between 3 months and 1 year postoperative. Cylinder increase was statistically but not clini- cally significant. Binocular BCVA did not change 1 year after surgery in group A and showed a clinically significant impairment in group B. A year after surgery, 18 patients did not use correction suggested by a physician 3 months after surgery. QoL was not statistically different 1 year after surgery between group A and group B. Conclusion: Our findings show that the way keratoconic patients see is difficult to analyze using only quantitative and 1-visit metrics. They highlight the importance of patients’ self perception and performing longitudinal analysis to consider neural compensation to optical changes from surgery. | pt_BR |
dc.identifier.citation | PARANHOS, Juliane de Freitas Santos et al. Visual perception changes and optical stability after intracorneal ring segment implantation: comparison between 3 months and 1 year after surgery. Clinical Ophthalmology, Eastleigh, v. 5, p. 1057-1062, 2011. | pt_BR |
dc.identifier.uri | http://repositorio.bc.ufg.br/handle/ri/17532 | |
dc.language.iso | eng | pt_BR |
dc.publisher.country | Gra-bretanha | pt_BR |
dc.publisher.department | Faculdade de Medicina - FM (RG) | pt_BR |
dc.rights | Acesso Aberto | pt_BR |
dc.subject | Keratoconus | pt_BR |
dc.subject | Quality of life | pt_BR |
dc.subject | Cornea | pt_BR |
dc.title | Visual perception changes and optical stability after intracorneal ring segment implantation: comparison between 3 months and 1 year after surgery | pt_BR |
dc.type | Artigo | pt_BR |
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