The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery

The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery

Christopher T Hood,1 Roni M Shtein,1 Daniel Veldheer,1,2 Munira Hussain,1 Leslie M Niziol,1 David C Musch,1,3 Shahzad I Mian1 1Department of Ophthalmology and Visual Sciences, University of Michigan W.K. Kellogg Eye Center, Ann Arbor, MI, 2Department of Anesthesiology, Medical College of Wisconsin,...

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Autores principales: Hood CT, Shtein RM, Veldheer D, Hussain M, Niziol LM, Musch DC, Mian SI
Formato: article
Lenguaje:EN
Publicado: Dove Medical Press 2016
Materias:
LASIK
LASEK
refractive surgery
temperature
humidity
Ophthalmology
RE1-994
Acceso en línea:https://doaj.org/article/2c4bd40c502640bca9fc795ee73a9234
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spelling oai:doaj.org-article:2c4bd40c502640bca9fc795ee73a92342021-12-02T06:26:33ZThe effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery1177-5483https://doaj.org/article/2c4bd40c502640bca9fc795ee73a92342016-11-01T00:00:00Zhttps://www.dovepress.com/the-effect-of-humidity-and-temperature-on-visual-outcomes-after-myopic-peer-reviewed-article-OPTHhttps://doaj.org/toc/1177-5483Christopher T Hood,1 Roni M Shtein,1 Daniel Veldheer,1,2 Munira Hussain,1 Leslie M Niziol,1 David C Musch,1,3 Shahzad I Mian1 1Department of Ophthalmology and Visual Sciences, University of Michigan W.K. Kellogg Eye Center, Ann Arbor, MI, 2Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, 3Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA Objective: To determine whether procedure room environmental conditions are associated with outcomes after myopic laser in situ keratomileusis (LASIK) or laser-assisted keratomileusis (LASEK). Design: Retrospective chart review. Participants: Eight hundred sixty-three eyes of 458 consecutive patients at a university-based academic practice. Methods: We reviewed the medical records of consecutive patients who underwent LASIK or LASEK over a 3-year period. Linear mixed regression models were used to investigate the association of laser room temperature and humidity with the outcomes of visual acuity and postoperative manifest spherical equivalent refraction. Repeated measures logistic regression models were used for the outcomes of diffuse lamellar keratitis (DLK) and need for enhancement surgery. Results: Subjects were on an average 38.6 years old at the time of surgery (standard deviation [SD] =10.3) and the average spherical equivalent refraction of eyes was 3.8 diopters (SD =2.03). Regression models did not reveal a significant association between temperature and uncorrected distance visual acuity (UDVA) or corrected distance visual acuity (CDVA), or between humidity and UDVA (P>0.05 for all). However, increased humidity was associated with a small but statistically significant improvement in CDVA after LASIK at 1 day, 1 month, 3 months, and 1 year postoperatively (P<0.05 for all). There was no significant association between temperature and humidity and the need for enhancement, the incidence of DLK, or postoperative manifest refraction. Conclusion: While increased laser room humidity was consistently associated with small improvements in CDVA after myopic LASIK over time, variations in room temperature and humidity were not associated with UDVA, the need for enhancement, the incidence of DLK, or refraction after myopic LASIK or LASEK. Keywords: LASIK, LASEK, refractive surgery, temperature, humidityHood CTShtein RMVeldheer DHussain MNiziol LMMusch DCMian SIDove Medical PressarticleLASIKLASEKrefractive surgerytemperaturehumidityOphthalmologyRE1-994ENClinical Ophthalmology, Vol Volume 10, Pp 2231-2236 (2016)
institution DOAJ
collection DOAJ
language EN
topic LASIK
LASEK
refractive surgery
temperature
humidity
Ophthalmology
RE1-994
spellingShingle LASIK
LASEK
refractive surgery
temperature
humidity
Ophthalmology
RE1-994
Hood CT
Shtein RM
Veldheer D
Hussain M
Niziol LM
Musch DC
Mian SI
The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
description Christopher T Hood,1 Roni M Shtein,1 Daniel Veldheer,1,2 Munira Hussain,1 Leslie M Niziol,1 David C Musch,1,3 Shahzad I Mian1 1Department of Ophthalmology and Visual Sciences, University of Michigan W.K. Kellogg Eye Center, Ann Arbor, MI, 2Department of Anesthesiology, Medical College of Wisconsin, Milwaukee, WI, 3Department of Epidemiology, University of Michigan, Ann Arbor, MI, USA Objective: To determine whether procedure room environmental conditions are associated with outcomes after myopic laser in situ keratomileusis (LASIK) or laser-assisted keratomileusis (LASEK). Design: Retrospective chart review. Participants: Eight hundred sixty-three eyes of 458 consecutive patients at a university-based academic practice. Methods: We reviewed the medical records of consecutive patients who underwent LASIK or LASEK over a 3-year period. Linear mixed regression models were used to investigate the association of laser room temperature and humidity with the outcomes of visual acuity and postoperative manifest spherical equivalent refraction. Repeated measures logistic regression models were used for the outcomes of diffuse lamellar keratitis (DLK) and need for enhancement surgery. Results: Subjects were on an average 38.6 years old at the time of surgery (standard deviation [SD] =10.3) and the average spherical equivalent refraction of eyes was 3.8 diopters (SD =2.03). Regression models did not reveal a significant association between temperature and uncorrected distance visual acuity (UDVA) or corrected distance visual acuity (CDVA), or between humidity and UDVA (P>0.05 for all). However, increased humidity was associated with a small but statistically significant improvement in CDVA after LASIK at 1 day, 1 month, 3 months, and 1 year postoperatively (P<0.05 for all). There was no significant association between temperature and humidity and the need for enhancement, the incidence of DLK, or postoperative manifest refraction. Conclusion: While increased laser room humidity was consistently associated with small improvements in CDVA after myopic LASIK over time, variations in room temperature and humidity were not associated with UDVA, the need for enhancement, the incidence of DLK, or refraction after myopic LASIK or LASEK. Keywords: LASIK, LASEK, refractive surgery, temperature, humidity
format article
author Hood CT
Shtein RM
Veldheer D
Hussain M
Niziol LM
Musch DC
Mian SI
author_facet Hood CT
Shtein RM
Veldheer D
Hussain M
Niziol LM
Musch DC
Mian SI
author_sort Hood CT
title The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
title_short The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
title_full The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
title_fullStr The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
title_full_unstemmed The effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
title_sort effect of humidity and temperature on visual outcomes after myopic corneal laser refractive surgery
publisher Dove Medical Press
publishDate 2016
url https://doaj.org/article/2c4bd40c502640bca9fc795ee73a9234
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