Choose your prescription type:
• Minus: Corrects nearsightedness
• Plus: Corrects farsightedness
• Astigmatism: Corrects irregular cornea curvature

Select lens material:
• Standard Plastic: Basic, most affordable
• Polycarbonate: Lightweight, impact-resistant
• High-Index: Thinner for strong prescriptions
• Trivex: Lightweight, superior optics

Enter your prescription strength:
• Negative values for myopia (nearsightedness)
• Positive values for hyperopia (farsightedness)
• Use increments of 0.25 (e.g., -2.50, +1.75)

Select lens diameter:
• Typical range: 40-80 mm
• Most common: 50-70 mm
• Depends on frame size and personal preference