Contact Lens Prescription vs. Spectacle Prescription

Contact Lens Prescription vs. Spectacle Prescription 

This is an article forward from http://biofilcon.com/contact-lens-prescription/#more-800

Contact lens prescription does differ from spectacle prescription, mainly due to the distance between the spectacle and your eyes.

For those with spectacle prescription less than -4.00 D, the difference is insignificant. Patients can choose to wear either the same prescription or slightly lower. Spectacle prescription of -4.00D above, the difference with contact lens prescription will become more significant.

The chart below, is a conversion chart of spectacle prescription to contact lens prescription.

(-) Minus prescription is refer for short sighted or myopia. (+) Plus precription is refer for long sighted or hyperopia.

Besides that, a simple calculation can be done to determine your contact lens prescription (as the diagram below)

_________________from this part, it is my opinion _______________

What if the prescription you are looking for is not available?

1) Try to keep the left-right eye balance 

For example, I am shortsighted and have a left eye spectacle prescription of -6.00, which according to the chart, it is -5.62, my right eye is -5.25, according to the chart I need -5.00. 

I would like to keep my left - right eye difference ( which is now by a 0.75 difference) 

So I choose  -5.75 for my left, and -5.00 for my right. 

2) Try to choose the power closest to your prescribed power. 

So some contact brands does not have -5.75 prescriptions. They only have -5.50 or -6.00. 

So I decide to go with -5.50 instead of -6.00, because my real prescription according to chart is -5.62 (closer to -5.50 an further to -6.00)

3) Go with your feeling. 

Sometimes you just need to try to know which one is better. Just try and feel it out. Order both prescriptions and try them out for a day. 

Hope this helps and Good Luck! 

Dueba Shinny Brown (known as Puffy 3 tone) Review

My order from Candylens comes in, I have ordered the lens with their free Fedex shipping over $100 plus buy two get one pair free promotion.

Dueba Puffy 3 Tone has always been a series I wanted to try. I loved how it lighten up the eyes on all other people's pictures. However there were a couple things that I worried. One is the base curve ( these are 8.8 base curve), my eyes are 8.5. So I was worried that they won't be as comfortable or have a weird bubble. Second is the size of 14.5 mm. My normal lens are 14.00 mm or 14.2 mm. So I was worried they are going to look kind of fake.

In the end, I found that I didn't need to worry about these ones. Dueba Shinny Brow (Puffy 3 Tone) were super comfortable and my eyes did not look freaky.

So here are some pictures:

Puffy 3 tone brown

With my new bangs

Shinny Brown really lighten up my eye color

Dueba Shinny Brown ( Puffy 3 tone) facing natural light

Ratings~

Design: ★★★★★ 5/5 Love the pattern, it is very natural looking. There is a black ring, but not dominant (which I like because I prefer contacts without black rings)  They enlarge my eyes and lighten them up, make my eyes look like a natural medium/ light brown. The exact effect I am looking for. 

Comfort ★★★★★ 5/5 AMAZING! You can't even feel it. I have to say that I am very surprised by how comfortable these are. I have really sensitive and dry eyes, so these are perfect. Haven't tried to wear them for a long period yet. So cannot give my word on how long these will last yet.  

Enlargement ★★★★★ 5/5 These are 14.5 mm, give you great enlargement without making your eyes look freaky. I have relatively small eyes, so these are great size for me. My clear contacts are 13.8 mm and my usual circle lens are 14.2 mm. 

Vision   ★★★★★ 5/5 Clear vision, no problem with seeing at all. It does not move when I look away, they stay in perfect position. No blurs. 

Overall  ★★★★★ 5/5 I give these 5 stars because of the comfort level and naturalness of the design, and its clear vision. 

Think these ones are going to be my favorite lens.