[optimal] Re: Parafocal issues on a Topcon 50EX
- From: Dave Clark <daveclark86@xxxxxxxxx>
- To: "optimal@xxxxxxxxxxxxx" <optimal@xxxxxxxxxxxxx>
- Date: Tue, 8 Jul 2014 12:54:21 -0400
Parfocal adjustment is not usually done in the field by Topcon. It can be a
tricky thing to do. Third parties try to do it, but I am not sure how well they
do it.
Warm Regards,
David Clark
Daveclark86@xxxxxxxxx
Cell: 551-579-1062
Sent from my iPhone
> On Jul 8, 2014, at 12:35 PM, cvvv <cv9691@xxxxxxxxx> wrote:
>
> how do i get removed from this list ...can anyone help me
>
>
>
>> On Tue, Jul 8, 2014 at 8:39 AM, Paul Paquette <dmarc-noreply@xxxxxxxxxxxxx>
>> wrote:
>> If possible, have someone come in to do complete internal cleaning & realign
>> objective to the parafocal setting you have on the relay on 1 of the bad
>> cameras & watch him like a hawk & repeat on the other.
>> I can't remember which camera I tried to clean & realign myself but it
>> wasn't as easy as it sounds & eventually had to send it in anyway.
>>
>> Good luck
>> Paul
>>
>>
>>
>>
>> -----Original Message-----
>> From: Steve Lusk <slusk@xxxxxxxxxxxxx>
>> To: optimal <optimal@xxxxxxxxxxxxx>
>> Sent: Tue, Jul 8, 2014 8:25 am
>> Subject: [optimal] Re: Parafocal issues on a Topcon 50EX
>>
>> Thanks for the info. We transport the same relay lens to different fundus
>> cameras. I think I'd be happy if I could just get the fundus cameras
>> 'ballparked', but the 2 in question are grossly different in focus from the
>> others. As far as I can tell, the only adjustment for focus on the 50Ex,
>> other
>> than the obvious focussing knob, is the objective lens. I was hoping to find
>> someone who has adjusted this lens before. Once I find the procedure, I want
>> to
>> adjust the 2 fundus cameras in question to where they are at least close to
>> the
>> others. I do have another option. We currently have 3 complete travel
>> systems
>> with relay lenses. I may have to simply choose one system, parafocal it to
>> work
>> efficiently on the 2 oddball fundus cameras and dedicate that system to use
>> in
>> those specific offices. Problem is, I hate work arounds, I'm a "fix it
>> properly"
>> kind of guy but that's a luxury that we are not often afforded in medicine
>> when
>> mating multiple systems.
>>
>>
>> Steve Lusk, CRA
>> Vistar Eye Center Retina Consultants
>> 5296 Peters Creek Road
>> Roanoke, VA 24019
>> Phone: (540) 342-3400 ext. 4731
>> Fax: (540) 362-1155
>> slusk@xxxxxxxxxxxxx
>> www.vistareye.com
>>
>> The information contained in this email may contain confidential health
>> information that is privileged and legally protected from disclosure by
>> federal law, the Health Insurance Portability and Accountability Act
>> (HIPAA). This information is intended only for the use of the individual
>> or
>> entity named above. If you are not the intended recipient, you are hereby
>> notified that reading, disseminating, disclosing, distributing, copying,
>> acting upon or otherwise using the information contained in this
>> facsimile
>> is strictly prohibited. If you have received this information in error,
>> please notify the sender immediately.
>>
>> Thank you.
>>
>>
>>
>> -----Original Message-----
>> From: optimal-bounce@xxxxxxxxxxxxx on behalf of Paul Paquette
>> Sent: Tue 7/8/2014 11:14 AM
>> To: optimal@xxxxxxxxxxxxx
>> Subject: [optimal] Re: Parafocal issues on a Topcon 50EX
>>
>> Steve,
>>
>> Are you also transporting 1 relay lens with your laptop or does each camera
>> have
>> separate relay lens & cabling?
>>
>> If you are using separate relays everything should stay parafocal once it's
>> set
>> unless you've had a recent internal cleaning of the EX & the lens wasn't
>> re-aligned properly at completion.
>>
>> If you're using the same relay I'd think it be nearly impossible to align
>> all 8
>> EX's to the parafocal settings you've made on that relay.
>>
>> Contact me directly if you want to compare parafocal techniques but I have
>> different camerabacks so your better off talking to another user or someone
>> at
>> OIS/Merge
>>
>> Paul Paquette
>> visualeys@xxxxxxx
>>
>>
>>
>>
>>
>>
>>
>> -----Original Message-----
>> From: Steve Lusk <slusk@xxxxxxxxxxxxx>
>> To: optimal <optimal@xxxxxxxxxxxxx>
>> Sent: Tue, Jul 8, 2014 7:13 am
>> Subject: [optimal] Parafocal issues on a Topcon 50EX
>>
>>
>> We currently have a stable of 8 Topcon 50EX's at various satellite offices
>> and
>> we run OIS/Merge travel laptop systems. We are having issues where we have
>> to
>> parafocal the relay lens to get a correct eye piece setting on the fundus
>> camera. A couple of the cameras focus seem to be out-of-whack for lack of a
>> better term. Setting the reticle is not a problem and parafocaling the relay
>> lens is a cinch but I'd just assume have all of my Topcons have the same
>> focal
>> length. Is there a way to adjust the objective lens on the problematic
>> cameras?
>> I've done a lot of internal maintenance on Topcons but this is one I simply
>> haven't ever had to tackle. It almost seems as though someone had to adjust
>> them
>>
>> for some sort of retro-fit or homemade digital camera setup. Any suggestions
>> are
>>
>> greatly appreciated.
>>
>> Steve
>>
>> Steve Lusk, CRA
>> Vistar Eye Center Retina Consultants
>> 5296 Peters Creek Road
>> Roanoke, VA 24019
>> Phone: (540) 342-3400 ext. 4731
>> Fax: (540) 362-1155
>> slusk@xxxxxxxxxxxxx
>> www.vistareye.com
>>
>> The information contained in this email may contain confidential health
>> information that is privileged and legally protected from disclosure by
>> federal law, the Health Insurance Portability and Accountability Act
>> (HIPAA). This information is intended only for the use of the individual
>> or
>> entity named above. If you are not the intended recipient, you are hereby
>> notified that reading, disseminating, disclosing, distributing, copying,
>> acting upon or otherwise using the information contained in this
>> facsimile
>> is strictly prohibited. If you have received this information in error,
>> please notify the sender immediately.
>>
>> Thank you.
>>
>>
>>
>>
>
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