IS THE IOL LENS SMALLER THAN REGULAR EYE LENS?

[TerriLynn52]

To: Dr. Feldman
Thank you so much for your response.  The vision is adjusting slowly every day.  I am anxious to find out if the IOLs are smaller than our normal lens that was taken out.  Is that why the "crescent moon" effect is seen on my outer peripheral edges?  My eye dr. says everything looks perfect.  The lens has not moved and my swelling is pretty much gone. If I close my good eye, the flashing in my right IOL eye stops.  Do you think the flashing is caused by the eyes trying to adjust to the differences in my monovision?? The wiggling still happens but not as much now.  Also, wearing a distance contact in my normal eye helps out ALOT with the blurriness I was having.  Again,  thank you for your response and I am just trying to understand the crescent moon thing more.  

Sincerely yours,
Terri

[golfmom01]

A related discussion, lens placement was started.

[chandru23]

Hello Doctor,

I am from Bangalore, India and I am high myopia RE -13.5 and LE - 6.0 Currently i am using traditonal soft contact lens from B&L.
Recently i was treated laser for retinal hole. Since from the 19 yrs i am using contact lens of RE -12.5 and LE -6
I am worried after i came to know about retinal hole. I am treated for ambylopia  when i was 13 yrs old.

My quires to you
1. Is soft contact lens is safe rest of my life?
2. I am software profession and work 8 hrs p/d on computer is it harmful to my eyes?
3. Let me know best contact lens for me, where i can keep my eyes healthy.
4. Your thoughts/inputs to keep my eyes healthy rest of my life

looking forward for your reply..thank you Doc.

[Sandy Feldman, MD, MS]

Dear TerriLynn52,

It is possible to have haloes following lens implantation.  Do the lights flash even if your eyes are closed? If so, please seek care you’re your eyeMD and let him know about these symptoms.  This should not occur as a result of monovision.

Dr. Feldman

Sandy T. Feldman, M.D., M.S.
ClearView Eye and Laser Medical Center
San Diego, California

[TerriLynn52]

Thank you for your response and wonderful information.  My flashing is during the whole day.  Looking at this computer screen makes the flashes almost intolerable since it is constant and distracting.  I don't know why when I close my normal eye the flashing stops in my IOL eye.  I have no clue on why that happens.  I go to the Dr. again on friday and I will let you know what he says about the flashing and crescent moon shape in my peripheral vision.  The shape definitely is noticeable when both eyes are straight forward and looking down together.  I wish someone would explain why this happens looking down and not so much looking forward, ahead or up.  Weird eh?  

[BUTTERCUP109]

I'm a patient not a doctor, but yes the IOL is smaller than the natural lens. This makes no difference, as it is still larger than your pupil.  However, if you see a line appear in your peripheral vision, crescent as you say, you may have a reflection off of a square edge of the IOL. I have Crystalens-45  and often see a line flash in my side vision when I pass between a well-lit room and a dark room. I was told this is a reflection off the square edge and is called positive photopsia. If this is your problem, I don't think anything can be done about it.