Comparison of cycloplegic and noncycloplegic retinoscopy in Chinese pre-school children.

摘要: ABSTRACT Twenty-seven Hong Kong Chinese children, aged 3 to 5½ years, were recruited in this study evaluate the relation between refractive error as measured retinoscopically before and after cycloplegia using cyclopentolate 1%. The noncycloplegic spherical of these children ranged from -0.75 +2.50 D approximately 98% pre-school have a manifest within range. cycloplegic can be approximated by multiplying component 1.45 adding +0.39 product, while keeping astigmatic power axis unchanged. Cyclopentolate 1% requires more time produce mydriasis eyes with heavily pigmented irides; however, its final effect on is apparently independent iris pigmentation depends amount present.