Abstract
We first wish to thank Dr Mehdizadeh for his interest in our article and his suggestion for another application of our previous study results. 1 Park K, Yun J, Kee C. The effect of cataract extraction on the contractility of ciliary muscle. Am J Ophthalmol;146:8–14. Google Scholar He suggested that changes in intraocular pressure occurring after cataract extraction might be related to changes in ciliary muscle contractility. We agree with his opinion. The ciliary muscle plays a major role in the regulation of outflow facility, and it is well known that ciliary muscle contraction occurring secondary to various stimuli leads to an increase in outflow facility. 2 Armaly M.F. Jepson N.C. Accommodation and the dynamics of the steady-state intraocular pressure. Invest Ophthalmol. 1962; 1: 480-483 PubMed Google Scholar , 3 Crawford K. Terasawa E. Kaufman P.L. Reproducible stimulation of ciliary muscle contraction in the cynomolgus monkey via a permanent indwelling midbrain electrode. Brain Res. 1989; 503: 265-272 Crossref PubMed Scopus (64) Google Scholar , 4 Kaufman P.L. Barany E.H. Loss of acute pilocarpine effect on outflow facility following surgical disinsertion and retrodisplacement of the ciliary muscle from the scleral spur in the cynomolgus monkey. Invest Ophthalmol. 1976; 15: 793-807 PubMed Google Scholar , 5 Van Buskirk E.M. Changes in the facility of aqueous outflow induced by lens depression and intraocular pressure in excised human eyes. Am J Ophthalmol. 1976; 82: 736-740 Abstract Full Text PDF PubMed Scopus (35) Google Scholar Kee and associates previously reported that pilocarpine causes an increase in outflow facility and that this response is increased after cataract extraction. 6 Kee C. Moon S.-H. Effect of cataract extraction and posterior chamber lens implantation on outflow facility and its reponse to pilocarpine in Korean subjects. Br J Ophthalmol. 2000; 84: 987-989 Crossref PubMed Scopus (13) Google Scholar Intraocular Pressure After Cataract Extraction and Contractility of Ciliary MuscleAmerican Journal of OphthalmologyVol. 146Issue 4PreviewThe recent article by Park and associates1 concerning the effect of cataract extraction on the contractility of ciliary muscle was interesting, because of its application in another aspect of ophthalmology rather than the accommodation and presbyopia. Full-Text PDF
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