Lensmart Blog
Why Is My Prescription Different in Each Eye? What It Means for Your Glasses
• 2026-11-03 16:05:51
Learn why your left and right eye prescriptions may differ, what it means for your vision, and how to choose glasses that provide the right correction for both eyes.
How Long Is an Eyeglass Prescription Valid, and Can You Order After It Expires?
• 2026-08-08 14:04:36
An expired eyeglass prescription may work for a grace period. Most stay valid one to two years, yet sellers and state laws differ. Check before you order.
SPH -0.25 to -6.00: What Your Myopia Number Means in Real Life
• 2026-07-28 10:20:26
See how myopia SPH numbers from -0.25 to -6.00 relate to everyday vision, glasses use, lens thickness, and the best frame options for each range.