Patented double aspheric glass optics provide enhanced imaging 
Original 90D lens started the slit lamp fundus examination revolution 
Small diameter ring is ideal for daynamic funduoscopy 
Outstanding genaral diagnostic  lens, even through small pupils
Comes with single lens case 
Field of view - 70/89
Image mag: - 76x
Lenser spot - 1.32x
Working distance - 7mm