The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb.
AAA batteries are not included.
No products in the cart.
The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb.
The pocket clip serves as a pressure-activated switch. This pen uses a “soft” LED bulb.
AAA batteries are not included.
| Brands | iAdvantec |
|---|
Small Fixation Disparity Polarized Target Vectographic two-dimensional card with 2 Fixation Disparity Crosses positioned vertical to one another to facilitate the comparison of binocular performance when using a lower versus higher spatial frequency or acuity demand.
The Teller Acuity Cards is a test of grating acuity for infants, young children and individuals with disabilities utilizing a preferential looking technique. This test has an extensive evidence base in normative and clinical studies that provide a strong foundation for applications in ophthalmology, optometry, and developmental practice. The test is cited more often than any similar product in the health information compiled by The National Library of Medicine.
WhatsApp us

