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خرید پکیج
تعداد آیتم قابل مشاهده باقیمانده : -8 مورد

Pinhole occluder

Pinhole occluder
A pinhole occluder is a simple way to focus light, as in a pinhole camera, temporarily removing the effects of refractive errors such as myopia in order to assess visual acuity.
Graphic 66325 Version 2.0