How to Know If You Need Glasses: Signs and Symptoms
How to Know If You Need Glasses By Dr. Ravi Raithatha, OD · Published October 24, 2026 Squinting, headaches after screen work, holding your phone further away, and blur that doesn’t clear when you rest are the four that matter. The catch is that uncorrected vision rarely announces itself. Most people adapt so gradually that […]
How to Read Your Eye Prescription: OD, OS, SPH, CYL, AXIS
How to Read Your Eye Prescription By Dr. Ravi Raithatha, OD · Published October 20, 2026 O.D. is your right eye and O.S. is your left. SPH is the strength of the lens, and the minus or plus sign tells you whether you’re nearsighted or farsighted. CYL is how much astigmatism you have, AXIS is […]
Astigmatism Test: How to Check, and What It Can’t Tell You
Astigmatism Test: How to Check, and What It Can’t Tell You By Dr. Ravi Raithatha, OD · Published November 4, 2026 A home astigmatism test uses a dial chart: if some spokes look darker or sharper than others, that points to astigmatism. It takes ten seconds, and it’s genuinely useful as a prompt. What it […]