HY-18 Digital PD Ruler

Feature:  High illumination white LED light source.  Rechargeable green lithium battery.  Fully charged can be used for

CTA-100 Eyepiece Adapter converts smart phones into professional digital eyepieces for the traditional optical Instruments. Just attach the equipped smart

Feature: 1.automatic operation system 2. red-free filter 3.anterior eye photography 4.with computer built in 5.non-mydriatic，auto focus, auto exposure 6. Minimum

Feature:  Non-mydriatic image with reliable quality.  45⁰ full-circle design.  Switching anterior-posterior, para-position compensation lens.  Split-line aligning