Haag-Streit Large Three Mirror Lens #903 is the original Goldmann three-mirror lens, offering the traditional 59-degree, 66 degree and 73 degree angles.
The 903 is the classic Goldmann lenses - the S in 903 S indicates that there is a scleral flange which serves as a eyelid block. They can be used with Sterycup - best to prevent the transfer of prions between patients.