1. You can test progressive addition lenses ( PALs ) by yourself by Cycloplegic.
2. You have to made PALs Trial Set in 34 mm ring to test in trial frame adjust. ( This trial fame must be adjustable for Pantoscopic Tilt Angle ( PTA ) , P.D. and P.Height.
2.1 You have to correct your Distance Rx with trial lens first.
2.2 Put PALs Trial Set Plano ADD in your addition to Trial Frame.
2.3 Test reading area with newspaper and mark with big pen and find out distorsion by swing you head and move you eye around to check the swimming effect on newspaper and do the same for other PALs that you would like to compare.
2.4 Test intermediate area by use the clear plastic film cover on the monitor of computer and test for intermediate vision with computer and swing your head and move you eye around to check the swimming effect on screen , then mark with big pen and do the same for other PALs.
2.5 Test distance area by looking to Snell Chart at 6 meters and swing your head and move you eye around to check the swimming effect at distance.
2.6 Test instant focus system by changing focus from far to near , near to far , far to intermediate and intermediate to near , do it many time and do it fast as fast possible to compare many difference kind of PALs.
2.7 Test for dynamic vision by walking and moving around fast as fast possible to check swimming effect and speed of clear vision.
2.8 Test for comfort of vision by wear it for 20 minute and act like in your real life like your work , your hobby , your habits and your car.
2.9 You can use this method to present your customer that , how big difference between cheap PALs and expensive PALs. ( Normally , I use Varilux Panamic compare with Hoyalux GP and all of my customer know that Panamic better than GP more than 3 time in every test , and nobody would like to going for GP or cheap PALs anymore. If they have low budget , they will going to any PALs that between GP and Panamic , like Varilux Comfort , Sola Percepta , Rodenstock Progressiv AT, but more than 5% of them going for Varilux Ipseo , 15% of them going for Rodenstock Impression ILT , 20% going for Panamic and 20% of them going for Varilux Comfort , 25% going for Rodenstock Progressiv AT and less going for Essilor InterView 080 )
2.10 I have more than 12 difference Trial PALs from Plano ADD 1.00D to Plano ADD 3.00D. Yes , it’s a lot of money to investment in these , but in the fact , I have more profit to cover this investment within 1 month only. Because no customer going for cheap PALs or Bi-focal or SV reading anymore , but they going for Panamic , Comfort , Progressiv AT
3. We test many premium PALs on one person for Rodenstock Impression ILT , Panamic , Ipseo , Comfort , Rodenstock Progressiv AT , Rodenstock Impression ILT XS , Hoyalux Summit pro , Hoyalux iD , Hoyalux Summit CD , Hoyalux GP Wide , Hoyalux TACT , Essilor InterView , Rodenstock Nexyma 40 and 80 to find out final conclusion in 9 months of used. We chosse our fathers to test because it is very easy to follow up. ( Our father lived with us )
4. We never believe what company of PALs say , we believe only what we test.
5. We can say , Rodenstock Impression ILT is much better than Hoyalux iD in every point and Varilux Comfort much better than Hoyalux Summit pro.
6. Customer who move the head more than the eye , suitable for more soft design and dynamic vision is their piority.
7. Customer who move the eye more than the head , suitable for more hard design and panoramic vision.
8. Customer who have high hyperope or high myope and with high presbyope, suitable for Variable Inset PALs by Ametropia and Addition like Varilux Panamic
9. Customer who have problem about near point convergence or Anisometropia over 1.25D or CYL. Over – 2.00D , suitable for Free Form PALs like Rodenstock Impression ILT , Varilux Ipseo , Hoyalux iD.
10. Customer who have special parameter of Pantoscopic Tilt Angle , Face Form Angle , Cornea Vertex Distance , suitable for Individual Free Form PALs like Rodenstock Impression ILT.
Sincerely ,
Mr.Somboon Chaowanakosol
President
Advance Progressive Addition Lenses Club ( APC )
www.apcthai.com
Bangkok , Thailand
e-mail : apcoptik@yahoo.com
Tel.+66 (0) 1 5384200
" Life is beautiful and sight is life "
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