In simple words: This is a type of eyeglass lens that corrects both near and far vision, along with astigmatism (blurred vision). It has two different powers for focusing light: one for near/farsightedness and one for astigmatism.

Spherocylindrical bifocal lens, a lens with a spherical front and cylindrical back, used to correct both near and farsightedness, as well as astigmatism. The spherical portion corrects near/farsightedness ranging from +4.00 to -4.00 diopters (D), while the cylindrical portion corrects astigmatism ranging from +2.12 to -4.00 D.

Example 1: A patient with both nearsightedness and astigmatism requires bifocals for reading and distance vision. The prescribed lens is V2204 with a spherical correction of -2.50 D and a cylindrical correction of -1.50 D., A patient with farsightedness and astigmatism requires bifocals. The prescribed lens is V2204 with a spherical correction of +3.00 D and a cylindrical correction of +2.25 D., An elderly patient with presbyopia (age-related farsightedness) and astigmatism requires bifocals. The prescribed lens is V2204 with a spherical correction of +1.75 D and cylindrical correction of -0.75 D.

Documentation should include the diagnosis (e.g., nearsightedness, farsightedness, astigmatism, presbyopia), the spherical and cylindrical diopter measurements, and the type of lens material (e.g., plastic, glass).