Find your exact computer/screen glasses power from your prescription — reduce digital eye strain with the right intermediate lens.
💻 Find Your Computer Glasses Power
Computer glasses use a fraction of your ADD value based on your typical screen distance. Choose your screen distance below, then enter your prescription.
cm
👁️ OD — Right Eye
D
D
👁️ OS — Left Eye
D
D
✅ Your Computer Glasses Powers
OD — Right Eye
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Computer Glasses Power
OS — Left Eye
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Computer Glasses Power
💡 Tips for Computer Glasses
Computer glasses are optimized for one distance — they are not for driving or distance vision
Follow the 20-20-20 rule: every 20 minutes, look at something 20 feet away for 20 seconds
Consider blue-light filtering coating to reduce digital eye fatigue
Adjust your monitor to be slightly below eye level and 50–70cm away
🎉 Ready to order computer glasses and reduce eye strain?
All tools on PDCalculator.net are for educational and informational purposes only. They do not replace professional eye care advice, diagnosis, or treatment. Always consult a licensed optometrist or ophthalmologist before purchasing eyewear or making any changes to your vision correction. Results are based on standard optical formulas and are provided as a general guide only.
📋 How Computer Glasses Power is Calculated
Computer glasses use a fraction of your reading ADD, scaled to your working distance. Reading glasses use 100% of the ADD (for ~40cm / 16in). Computer glasses use roughly 50–65% of the ADD for a monitor at 60cm (24in).
// Required power at distance D = 1/D (in meters) // Computer ADD = ADD × (required power / max ADD power) Monitor at 60cm:Required = 1/0.6 = 1.67D → use ~60% of ADD Example:SPH −1.00 + (ADD +2.50 × 0.6) = −1.00 + 1.50 = +0.50
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Phone (40cm)
~100% of ADD — same as reading glasses. Very close range.
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Monitor (60cm)
~60–65% of ADD. Most common computer glasses prescription.
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Large Screen (80cm)
~50% of ADD. For larger displays or wall-mounted screens.
❓ Frequently Asked Questions
What is digital eye strain and can computer glasses help? +
Digital eye strain (computer vision syndrome) causes headaches, blurry vision, dry eyes, and neck pain after prolonged screen use. Computer glasses optimized for your working distance reduce the focusing effort your eyes need, significantly reducing strain symptoms.
Are computer glasses the same as blue light glasses? +
No. Computer glasses have a specific prescription power optimized for screen distance. Blue light glasses filter blue wavelengths but may have no prescription. The best computer glasses combine both: the right intermediate power AND blue light filtering.
My prescription has no ADD value — can I still use computer glasses? +
If you have no ADD, your distance prescription may already work for computer use. If you experience eye strain, speak to your optometrist about an occupational or computer-specific lens. You may benefit from a small ADD that wasn't prescribed for general use.
Can I wear computer glasses all day? +
Computer glasses are designed specifically for intermediate distances (50–80cm). Wearing them for driving or watching TV can cause blurry vision. They are best used at your desk and swapped out when away from screens.