# Posts

## Introduction To Dispensing – Pupillary Distance & Heights

Measuring the correct pupillary distance and pupil heights for your customers is quintessential to proper optical dispensing. Get it right and your customers will love their new glasses, get it wrong and they will promptly be back to return their glasses. In this lesson, you will learn why are these measurements so important, as well … Continue reading Introduction To Dispensing – Pupillary Distance & Heights

## Introduction To Dispensing – The Glasses Order Form

In this lesson you will learn about the process of creating an order for glasses, as well as all the information that must be gathered to properly fill out a glasses order form. Where Are Glasses Made? Most optical stores do not make glasses on the spot. Once they have all the information for an … Continue reading Introduction To Dispensing – The Glasses Order Form

## Introduction To Lenses – Tints

You cannot work in optical store without encountering requests for sunglasses on a daily basis. Hence, it is important to know about all the different ways that lenses can be tinted. How Do Sunglasses Work? First, let's consider what sunglasses actually do. You might say they: Make everything darker They protect your eyes from the … Continue reading Introduction To Lenses – Tints

## Introduction To Lenses – The Base Curve

In Lesson 1 of this course, you learned about the lens index. In this lesson you will learn about another property of lenses called the base curve. Remember that to fully understand the concepts covered in this lesson, it is best to have read through the entire The Optics of Vision course. The True Shape … Continue reading Introduction To Lenses – The Base Curve

## Vertex Distance Conversion Chart Motherload

If you're looking for a vertex distance conversion charts, you've found the motherload. Here you will find vertex distance conversion charts for single powers (i.e Sphere power only), as well as for astigmatism (Sphere + Cylinder combinations). Pdf versions of all the charts shown on this page are available on The Lost Contact's Downloads page.  … Continue reading Vertex Distance Conversion Chart Motherload

## Introduction To Lenses – The Index

Hello and welcome to the first lesson of The Lost Contacts' Introduction To Optical Dispensing course! Before tackling this course, please keep in mind that it is meant to build on the knowledge laid out in The Lost Contacts' The Optics of Vision course. Please make sure you are familiar with the topics in that … Continue reading Introduction To Lenses – The Index

## Ordering Your Patient’s Free Contact Lens Trial Pair

This is the 5th installment of my Fitting Contact Lenses Course. So far we've learned: Knowing Who Can't Wear Contact Lenses Knowing Who Can Wear Contact Lenses How To Convert A Glasses Prescription To Contact Lenses How To Convert A Glasses Prescription To Contact Lenses: Astigmatism The next step is to get your patient a … Continue reading Ordering Your Patient’s Free Contact Lens Trial Pair

## The Optics of Vision – Part 10: Presbyopia

In The Optics of Vision - Part 9, we learned about the function of the crystalline lens. But as I pointed out towards the end of the lesson, the crystalline lens gradually stops functioning. This results in the condition we're going to discuss in this lesson called Presbyopia. This being the last lesson of The … Continue reading The Optics of Vision – Part 10: Presbyopia

## Can An Optometrist Prescribe Medication?

When you're sick and need medication, you have it prescribed by your doctor and filled by your pharmacist, right? But can an optometrist prescribe medication? Optometrists are licensed doctors after all. The short answer is yes, optometrists can prescribe medication. However, optometrists have a very defined scope of practice that - surprise, surprise -  revolves … Continue reading Can An Optometrist Prescribe Medication?

## The Optics of Vision – Part 9: The Crystalline Lens

If you thought the way the eye works was cool before, this is going to blow your mind. You're about to learn about the crazy wonders of the the cyrstalline lens. This lesson builds on all of the previous lessons in this course, so please make sure you are up to speed before tackling this … Continue reading The Optics of Vision – Part 9: The Crystalline Lens