Standard vs HD Procedure

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Learn about terminology behind our procedures

Patients are often confused about all the terminology regarding LASIK and LASEK. Basically, the former is cutting, and the latter is non-cutting. A totally different issue is custom vs. standard. For clarity, here are all the terms that all indicate custom, meaning these terms are all synonyms: custom, wavefront, CustomVue, Hi-Def. The non-custom, non-standard type of treatment is usually referred to as “standard” (because non-custom or non-hi-def sounds bad to the customer). You should be very clear about what is the difference between these two options.

  • Standard
  • HD Procedure

Patients are often confused about all the terminology regarding LASIK and LASEK. Basically, the former is cutting, and the latter is non-cutting. A totally different issue is custom vs. standard. For clarity, here are all the terms that all indicate custom, meaning these terms are all synonyms: custom, wavefront, CustomVue, Hi-Def. The non-custom, non-standard type of treatment is usually referred to as “standard” (because non-custom or non-hi-def sounds bad to the customer). You should be very clear about what is the difference between these two options.

Standard means the laser is correcting your prescription to the same degree of precision as glasses or contacts–namely, in increments of +/- 0.25 diopters. For example, your contact or eyeglass prescription is always given in quarter diopter increments, like -3.00 or -3.25, there is nothing in-between. If you’re observant and have looked at your prescription over the years, you’ve already noticed this, so if your optometrist gives you a prescription for new glasses that were -3.18, you would say something like, “Wow, I guess you guys have figured out how to grind glasses more precisely these days–that’s really cool!”

Unfortunately, that’s also not true. It’s basically impossible to make eyeglasses or contacts that accurate. More unfortunately, these days some contact and lens manufacturers are trying to market their products as “digital” or “custom” or “wavefront.” This is impossible, as when you look out of contacts or glasses, the contacts move in your eye, and your eye looks out of different parts of your glasses. Therefore, even if the lens is “custom” you will wind up looking out of the wrong part of the lens, so you will not see any benefit from your “digital” lenses (that you paid more for).

We understand that this explanation is somewhat complicated, so invite you to call our centre, make an appointment for a free consultation, and then have Dr. Chynn or one of his 4 doctors (all true MD surgeons, not ODs or optometrists or “techs”) explain this in more detail.

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