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How Sensible is the Prescription of Glasses in Intermittent Exotropia and Decompensating Exophoria?
Gusek-Schneider G. C., Kulzer J., Boss A.
Department of Ophthalmology, University of Erlangen-Nürnberg, Erlangen
Purpose: In patients with intermittent exotropia (IE) and decompensting exophoria (DE) minimazing of hyperopic refraction is a common trial with the argument of stimulation of accommodation. On the other hand the full refraction may improve fusion because of the improved retinal image and better visual acuity, The aim of this study was to investigate the effect of full correction of the retinoscopic measurements done in cycloplegia in both groups.
Method: 63 patients (n= 34 with IE and n= 29with DE) fulfilled the inclusion criteria: refraction in cycloplegia, follow up of at least 8 weeks , age more than 2.5 years and reliable visual acuity. Exclusion criteria were all forms of secondary and constant exotropia, A-V- incomitance of high amount and eyes with amblyopia <0.3. Mean age of refraction was significantly higher in patients with DE compared to those with IE: 14 + 11,8 (4,7-41,7) vs. 6,5 + 2,3 (2,6-12,3) years, p < 0,001. Glasses were prescribed in any case of myopia and astigmatism as well as in hyperopia of > +0,5 dpt.
Results: Mean refraction of both eyes (mean value of spherical equivalent of both eyes) was higher for IE compared to DE. 1,0 + 1,7 (-3,4-+5,4) vs. 0,5 + 2,1 (-5,3-+6,3) dpt, p= 0,23. Astigmatism was found in 36 of 68 eyes in IE vs. 40 of 58 eyes in DE, p=0,07. Prescription of glasses was done in 31 of 34 patients wit
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