What Is The Differential Prescription?

The differential prescription is a reduced prescription specifically for close-up use. Using a full prescription meant to correct myopia at long distances while focused up-close, will lead to more lens-induced myopia.  To reduce the eye […]

Feb 22,2015 · 1 min read

The differential prescription is a reduced prescription specifically for close-up use.

Using a full prescription meant to correct myopia at long distances while focused up-close, will lead to more lens-induced myopia.  To reduce the eye strain and focal plane change associated with full prescription wear up-close, we use a prescription specifically for close-up.

For myopes <2 diopters:  No glasses should be necessary for close-up.

For myopes >2 diopters:  Often a reduction of 1 to 2 diopters makes sense for close-up.  To determine the exact prescription one may use a test lens kit, or a visit to a rehab sympathetic optometrist, or extrapolate the correction need by using the centimeter calculator.

Rehab specific:  Reduction of prescription to introduce an ergonomically comfortable blur horizon is well advised.

How to choose a differential prescription is here.

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    Formerly genetically defective. 🤓 Weaned off retail optometry lens subscriptions, now 20/20 eyesight. Also into BJJ, kitesurfing, paragliding, being stupid.

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    All contents on this site should be considered research material only.  We are not offering medical advice or treatment or cures for any illnesses.Before considering taking steps to control your own myopia, you should definitely visit a qualified ophthalmologist for a comprehensive eyesight checkup.  Specific diagnoses illnesses aside,  most) myopia may be considered to not be an illness at all.  Most myopia is likely just a matter of environmental strain, and excessive prescription use.  You yourself may be able to control and reduce your own myopia by 1) managing eye strain, 2) conservative prescription lens use, and 3) targeted positive stimulus.We recommend finding a prevention minded optometrist to supplement your journey with professional advice and prescription management help.  While not a requisite, a supportive optometrist may make your journey that much more enjoyable!Potential Side Effects: (1) You may experience astigmatism-like symptoms, especially if you reduce too fast or without paying attention to this (transient) symptom. Search our Youtube channel or Website for 'transient astigmatism'. This can easily be prevented or managed. (2) Some people report an increase in eye floaters when practicing active focus. In general floaters are considered harmless but a sudden increase in floaters should be evaluated by a medical trained professional, as they could be a sign of retinal detachment or other serious medical condition. Generally taking it easy, not over straining, practicing gently and with patience should help. (3) Headaches. You're taking on a very much unsanctioned self-experiment changing diopters. Anytime you overdo things or change too much or aren't educating yourself first, you may expose yourself to strain symptoms. You should be experiencing no pain, headaches, or discomfort if you do things correctly!