Trial Lens Occluder with Pinhole Apertures for Vision Testing and Refraction Professional-grade trial lens occluder featuring precision pinhole apertures designed for accurate vision assessment. The opaque construction blocks ambient light while strategically placed pinholes allow controlled light passage, enabling clinicians to isolate visual function and detect refractive errors including astigmatism. Ideal for optometrists, ophthalmologists, and vision screening professionals performing comprehensive eye exams. Pinholes improve patient comfort by reducing glare and enhancing focus during testing procedures. Built with durable materials to withstand repeated clinical use in busy practice environments. Essential component of any trial lens kit for refraction, visual acuity measurement, and diagnostic eye care.