Clinical trial NCT02177539: A New More Efficient Cycloplegia Scheme
Official title: A New More Efficient Cycloplegia Scheme
Study type: INTERVENTIONAL
Overall status: UNKNOWN
Phase: PHASE4
Conditions: Refractive Errors
Keywords: cycloplegia
refraction in children
cycloplegic agents
cycloplegic schemes
cyclopentolate
Lead sponsor: Pontificia Universidad Catolica de Chile
Sponsor class: OTHER
First posted: 2014-06-27
Enrollment: 30
Sex: ALL
Minimum age (years): 1
Maximum age (years): 10
Standard ages: CHILD
Accepts healthy volunteers: yes
Allocation: RANDOMIZED
Intervention model: SINGLE_GROUP
Primary purpose: DIAGNOSTIC

Brief summary: The purpose of this study is to determine whether tropicamide + phenylephrine cyclopentolate + applied for once waiting 30 minutes to retinoscopy (new scheme) is not inferior to apply cyclopentolate alone and wait 45 minutes to retinoscopy (traditional scheme)


Eligibility criteria: Inclusion Criteria:

* Children between 1 and 10 years

Exclusion Criteria:

* Strabismus
* Ocular surgery
* Another ocular disease than ametropias (i.e uveitis, cataract)
* Cardiovascular or neurologic disease.
* Allergy to any of drugs used in the study

Primary outcomes:
measure: Change in Spherical equivalent
timeFrame: average 18 days
Secondary outcomes:
measure: Change in spherical refraction
timeFrame: average 18 days
measure: Change in cylindrical refraction
timeFrame: average 18 days
measure: iris motility
timeFrame: average 18 days
Other outcomes:
measure: crying with the application
timeFrame: average 18 days
measure: eyes color and cycloplegia
timeFrame: average 18 days
Locations:
city: Santiago
country: Chile
facility: Pontificia Universidad Catolica de Chile, Departamento de Oftalmología
Study officials:
affiliation: Pontificia Universidad Catolica de Chile
name: Cristian Salgado
role: STUDY_CHAIR
References:
citation: Fan DS, Rao SK, Ng JS, Yu CB, Lam DS. Comparative study on the safety and efficacy of different cycloplegic agents in children with darkly pigmented irides. Clin Exp Ophthalmol. 2004 Oct;32(5):462-7. doi: 10.1111/j.1442-9071.2004.00863.x.
citation: McMullen M, Netland PA. Wait time as a driver of overall patient satisfaction in an ophthalmology clinic. Clin Ophthalmol. 2013;7:1655-60. doi: 10.2147/OPTH.S49382. Epub 2013 Aug 20.
citation: Bagheri A, Givrad S, Yazdani S, Reza Mohebbi M. Optimal dosage of cyclopentolate 1% for complete cycloplegia: a randomized clinical trial. Eur J Ophthalmol. 2007 May-Jun;17(3):294-300. doi: 10.1177/112067210701700303.
citation: Alimgil ML, Erda N. [The cycloplegic effect of atropine in comparison with the cyclopentolate-tropicamide-phenylephrine combination]. Klin Monbl Augenheilkd. 1992 Jul;201(1):9-11. doi: 10.1055/s-2008-1045860. German.
citation: Ebri A, Kuper H, Wedner S. Cost-effectiveness of cycloplegic agents: results of a randomized controlled trial in nigerian children. Invest Ophthalmol Vis Sci. 2007 Mar;48(3):1025-31. doi: 10.1167/iovs.06-0604.
citation: Manny RE, Fern KD, Zervas HJ, Cline GE, Scott SK, White JM, Pass AF. 1% Cyclopentolate hydrochloride: another look at the time course of cycloplegia using an objective measure of the accommodative response. Optom Vis Sci. 1993 Aug;70(8):651-65. doi: 10.1097/00006324-199308000-00013.
citation: Twelker JD, Mutti DO. Retinoscopy in infants using a near noncycloplegic technique, cycloplegia with tropicamide 1%, and cycloplegia with cyclopentolate 1%. Optom Vis Sci. 2001 Apr;78(4):215-22. doi: 10.1097/00006324-200104000-00010.
citation: Kleinstein RN, Mutti DO, Manny RE, Shin JA, Zadnik K. Cycloplegia in African-American children. Optom Vis Sci. 1999 Feb;76(2):102-7. doi: 10.1097/00006324-199902000-00017.
citation: Jones LW, Hodes DT. Possible allergic reactions to cyclopentolate hydrochloride: case reports with literature review of uses and adverse reactions. Ophthalmic Physiol Opt. 1991 Jan;11(1):16-21.
citation: Rengstorff RH, Doughty CB. Mydriatic and cycloplegic drugs: a review of ocular and systemic complications. Am J Optom Physiol Opt. 1982 Feb;59(2):162-77.
citation: Hofmeister EM, Kaupp SE, Schallhorn SC. Comparison of tropicamide and cyclopentolate for cycloplegic refractions in myopic adult refractive surgery patients. J Cataract Refract Surg. 2005 Apr;31(4):694-700. doi: 10.1016/j.jcrs.2004.10.068.
citation: Egashira SM, Kish LL, Twelker JD, Mutti DO, Zadnik K, Adams AJ. Comparison of cyclopentolate versus tropicamide cycloplegia in children. Optom Vis Sci. 1993 Dec;70(12):1019-26. doi: 10.1097/00006324-199312000-00005.
citation: Chen J, Xie A, Hou L, Su Y, Lu F, Thorn F. Cycloplegic and noncycloplegic refractions of Chinese neonatal infants. Invest Ophthalmol Vis Sci. 2011 Apr 14;52(5):2456-61. doi: 10.1167/iovs.10-5441.
citation: Salazar M, Shimada K, Patil PN. Iris pigmentation and atropine mydriasis. J Pharmacol Exp Ther. 1976 Apr;197(1):79-88.
citation: Nishizawa AR, Orton RB, Cadera W. Comparison of 0.5% cyclopentolate plus 0.5% tropicamide and 1% cyclopentolate alone for mydriasis of dark irides. Can J Ophthalmol. 1988 Dec;23(7):299-300.
citation: Lovasik JV. Pharmacokinetics of topically applied cyclopentolate HCl and tropicamide. Am J Optom Physiol Opt. 1986 Oct;63(10):787-803. doi: 10.1097/00006324-198610000-00001.
citation: Lovasik JV, Kergoat H. Time course of cycloplegia induced by a new phenylephrine-tropicamide combination drug. Optom Vis Sci. 1990 May;67(5):352-8. doi: 10.1097/00006324-199005000-00009.
citation: Anderson HA, Bertrand KC, Manny RE, Hu YS, Fern KD. Comparison of two drug combinations for dilating dark irides. Optom Vis Sci. 2010 Feb;87(2):120-4. doi: 10.1097/OPX.0b013e3181cc8da3.
citation: Lin LL, Shih YF, Hsiao CH, Su TC, Chen CJ, Hung PT. The cycloplegic effects of cyclopentolate and tropicamide on myopic children. J Ocul Pharmacol Ther. 1998 Aug;14(4):331-5. doi: 10.1089/jop.1998.14.331.