GPLI logo
Search the GP lens database
Contact Us
Site Map
Site Search

ONLINE SYMPOSIA:

Case Study for the November 21 Online Symposium, "Multifocal Cases for GPLI Chat"
with Dr. Doug Benoit

Links to Case Studies:

Case 1

46 yo administrator. Wore GPs in past, last doctor changed her to SCLs. Never as happy with the vision. Now near becoming a problem as well. Frustrated.

Rx: OD -2.75 -1.00 x 180   Dominant eye             Ks: OD 42.00/43.00 @ 90

      OS -2.25 -1.50 x 180   Add +1.50 OU                   OS 42.00/43.25 @ 90

Pupils 4.5 mm in average room light
Palpebral fissure 11.5 mm
Lower lid at limbus

Trial fit with Essential Xtra (Blanchard Labs)

     OU 7.90 mm BC, -2.00, 9.5 mm LD, Series 2 Add

     Comfort good after 5 minutes ( no anesthetic)

     Vision: OD 20/20 with a -1.00 over-refraction

                OS  20/20 with a -0.50 over-refraction

       Near vision: J 1 OU with distance over-refraction in place

Positioned superior centrally, with upper lids.

     Movement was good in all positions of gaze.

     Fluorescein pattern: slight apical clearance with good peripheral clearance OU

Ordered: Essential Xtra , 7.90 mm BC OU, 9.5 mm LD OU, OD -3.00   Series 2

                                                                                       OS -2.50   Series 2

At dispensing, VA 20/20 distance and near.  Comfort was great.

Each lens fit and moved as the trial lenses had done.  Patient very happy.

Case 2

62yo technician. Current glasses wearer. Has used soft contact lenses in past for sports but not work. Has high visual demands.

Rx: OD -1.00 -0.75 x 180   Dominant eye          Ks: OD 43.50/44.50@90

      OS -1.25 -1.00 x 180   Add +2.25                     OS 43.50/44.75@90

Pupils 4 mm in average room light

Palpebral fissure 11 mm

Lower lid at limbus

Trial fit with Metro-Seg (Metro Optics)

 OD 7.80 mm BC, -3.00, 9.5 mm LD, +2.00 Add, 1.0 mm below geometric center,

 OS  7.70 mm BC, -3.00, 9.5 mm LD, +2.00 Add, 1.0 mm below geometric center,

      Both had 1 diopter prism @90

   Comfort good after 10 minutes without anesthetic use.

   Vision: OD 20/20 with a +2.00 over-refraction

              OS  20/20 with a +2.00 over-refraction

        Near vision was J 1 with an additional +0.50 OU

Both lenses positioned centrally with slight lid attachment and the segment at the lower pupil margin OD, slightly below the pupil margin OS.

Movement was good in all positions of gaze, with good translation up on downgaze.

Rotation was stable at 5 degrees nasal OU.

 Fluorescein pattern: alignment OD, with good peripheral clearance.

   OS showed a slight apical clearance with good peripheral clearance.

Ordered: Metro-Seg
 
OD: 7.80 mm BC, -1.00, 9.5 mm LD, +2.50 Add, 1.0 mm bgc, 1 diopter of prism @ 90.

OS: 7.75 mm BC, -1.00, 9.5 mm LD, +2.50 Add, 1.0 mm bgc, 1 diopter of prism @ 90.

At dispensing, comfort was good after 5 minutes.

     Vision was 20/20 OU at distance and near

    Both lenses positioned centrally with lid attachment. Each segment was at the lower pupil margin in primary gaze.  Movement was good in all positions of gaze, with good translation up on downgaze.  Rotation was stable at 5 degrees nasal OU.

    Fluorescein showed alignment OU with good peripheral clearance.

  The patient was advised to begin with 4 hours of wear on day one, increasing in two hour increments to a maximum of 14 hours.

He has continued to do well.

 

Go to Case 1
Go to Case 2
Back to top

 
 

GP Lens Design Database - Online Symposium Schedule
 
Newsletter Sign-up - Order Educational Materials
 
Contact GPLI - Site Map - Home

Questions about fitting GP lenses? Send an e-mail to our panel of experts.

Copyright ©1999–2010 Contact Lens Manufacturers Association.
All rights reserved.
This page was last updated Friday, March 12, 2010.
 
Printing Note: If you're printing pages from this website and find that the right side is cut off, try this: With older printers, you could choose the "landscape" (horizontal) setting rather than the "portrait" (vertical) setting when printing. But most newer printers let you scale down web pages before you print. For example, if you have an HP laser printer, when you choose "Print" from the menu, you can then choose "Preferences," where under the "Effects" tab you can change the 100% setting to, say, 95%. You may also see a "ZoomSmart" feature that lets you choose "scale to fit."