Blog | Optical Industry Insights, Guides & Tools for Opticians

Keratoconus is progressive corneal ectasia that produces irregular astigmatism no spectacle lens can fully correct. This guide covers early detection signs, Amsler-Krumeich staging, and correction selection from early-stage spectacles through advanced scleral lenses.

Dry eye syndrome is the leading reason contact lens wearers drop out of wear. This guide explains the tear film, the two main subtypes, and what opticians can actually do about it at the fitting desk.

Presbyopia is the inevitable, age-related loss of near-focusing ability that affects virtually everyone past age 50. This guide covers onset, add power progression, correction options, and why accurate fitting measurements are critical for progressive lens wearers.

Selling lenses online, you can already get pupillary distance from a photo, but segment height has needed the customer to be wearing the frame. We are building a way to measure fitting height, and the full dispensing set, from a single remote photo, no try-on required. Here is a first look.

Anti-reflective coating for glasses cancels lens reflections through thin-film interference, cutting night-driving glare and screen fatigue. How it works, who benefits, what it costs, and how to clean AR lenses.

Eye floaters are usually benign, but a sudden shower of new floaters or accompanying flashes of light can signal a retinal tear or detachment, a sight-threatening emergency that requires same-day evaluation by an ophthalmologist.

When a patient says ‘I’m seeing double,’ one question separates a correctable optical problem from a medical emergency. This guide shows optical staff how to triage diplopia and refer appropriately.

Pupillary distance (PD) is the measurement in millimeters between the centers of your two pupils. To measure it yourself, stand 18 inches from a bathroom…

The numbers stamped on a frame, such as 52□18-140, are the boxing system: eye size, bridge and temple length in millimeters. This guide decodes every frame measurement (A, B, DBL, ED), shows how they set frame PD and decentration, and how to tell whether a lens will physically fit.

There is a published answer to how accurate a PD, lens power and optical center have to be. ANSI Z80.1 and ISO 21987 set the tolerances a finished pair of glasses must meet. This guide gives the exact numbers and what they mean for measurement at the dispensing desk.