Effect of cycloplegia on corneal biometrics and refractive state.
Purpose: To determine changes in refractive state and corneal parameters after cycloplegia with cyclopentolate hydrochloride 1% using a dual Scheimpflug imaging system. Methods: In this prospective cross-sectional study patients aged 10 to 40 years who were referred for optometric evaluation enrolle...
| Publicado en: | Journal of Ophthalmic & Vision Research Vol. 13; no. 2; pp. 101 - 110 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Knowledge E DMCC
Apr-Jun2018
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=129131366&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 129131366 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 20082010 AY5S jtl: Journal of Ophthalmic & Vision Research issn: 20082010 maglogo: N pubinfo: dt: Apr-Jun2018 vid: 13 iid: 2 pid: 35682 pub: Knowledge E DMCC artinfo: ui: 129131366 129131366 129131366 10.4103/jovr.jovr_196_17 129131366 ppf: 101 ppct: 9 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Effect of cycloplegia on corneal biometrics and refractive state. aug: au: Bagheri, Abbas Feizi, Mohadeseh Shafii, Aliakbar Faramarzi, Amir Tavakoli, Mehdi Yazdani, Shahin affil: Ocular Tissue Engineering Research Center, Shahid Beheshti University of Medical Sciences; Ophthalmic Research Center, Shahid Beheshti University of Medical Sciences, Tehran sug: subj: Eye Pathology Paralysis Diagnosis Diagnosis, Eye Methods Paralysis Drug Therapy Acids, Carbocyclic Therapeutic Use Biometrics Treatment Outcomes Human Cross Sectional Studies Prospective Studies Young Adult Adult Refraction, Ocular Astigmatism Corneal Pachymetry Refractive Errors Instillation, Drug Hyperopia Myopia Cornea Physiology Adult: 19-44 years ab: Purpose: To determine changes in refractive state and corneal parameters after cycloplegia with cyclopentolate hydrochloride 1% using a dual Scheimpflug imaging system. Methods: In this prospective cross-sectional study patients aged 10 to 40 years who were referred for optometric evaluation enrolled and underwent autorefraction and corneal imaging with the Galilei dual Scheimpflug system before and 30 minutes after twice instillation of medication. Changes in refraction and astigmatism were investigated. Corneal biometrics including anterior and posterior corneal curvatures, total corneal power and corneal pachymetry were compared before and after cycloplegia. Results: Two hundred and twelve eyes of 106 subjects with mean age of 28 ± 5 years including 201 myopic and 11 hyperopic eyes were evaluated. Mean spherical equivalent refractive error before cycloplegia was -3.4 ± 2.6 D. A mean hyperopic shift of 0.4 ± 0.5 D occurred after cycloplegia (P < 0.001). The astigmatism power did not significantly change (P = 0.8), however, 26.8% of eyes with significant astigmatism experienced a change of more than 5 degrees in the axis of astigmatism. Changes in posterior corneal curvature were scant but statistically significant (P = 0.001). Moreover, corneal thickness was slightly increased in the central and paracentral regions (P < 0.001 and P < 0.001, respectively). Conclusion: Cycloplegia causes a hyperopic shift and astigmatism axis changes, along with an increase in central and paracentral corneal thickness and change in posterior corneal curvature. The effects of cycloplegia on refraction and corneal biometrics should be considered before cataract and refractive surgeries. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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