R. Melander & Associates

Advanced Anterior Segment & Dry Eye Analysis with OCULUS Pentacam and Keratograph Webinar

thesniki5 — Wed, 21 Sep 2011 13:55:18 +0000

This is A Webinar done for Oculus Germany by S.Barry Eiden, OD,FAAO
It shows all the benefits of the Pentacam and the Keratograph

Vision Expo West

thesniki5 — Wed, 21 Sep 2011 13:36:02 +0000

Come check us out at Vision Expo West from Thursday 22-Saturday 24 September 2011!!

Keep checking this page for special discounts!!!

Come see us at the Expo and let us show you the great equipment that can change Your Business!

http://visionexpowest.com/

Pupillometry in Ophthalmology

thesniki5 — Tue, 19 Jul 2011 11:35:08 +0000

Accurate pupillometry is now an essential part of the evaluation, screening, and refractive surgery planning process.
The NeurOptics VIP™-200 Pupillometer is a portable device used to measure pupils and screen candidates for refractive procedures and other ophthalmic applications such as the fitting of multifocal intraocular lenses (IOLs).
The Pupillometer:
• Accurately measures pupils in total darkness;
• Instantly and accurately measures, records, and reports average pupil size and standard deviation;
• Has one-button activation
• Requires no calibration by the user (just point and shoot)
• Provides printed verification
Is pre-operative measurement of the pupils important?
Doctors must define the area of the cornea they will reshape (the optical zone). As the optical zone gets larger, complications from higher order aberrations become more likely. These aberrations are often responsible for post-surgical problems related to night driving such as glare or halos.
The latest article on this topic, “Pupil size and night vision disturbances after LASIK” published in August of 2004, recommended preoperative evaluation of pupil size in all patients prior to refractive surgery because of the correlation the researchers found between large scotopic pupil sizes and the impression of worsened night vision.
Pre-operative pupil measurement has become part of the guidelines for refractive surgery
Why the NeurOptics™ Pupillometer?
The NeurOptics™ Pupillometer is consistent from unit to unit and operator to operator. The key to the reproducibility in measurement is the use of NeurOptics’ exclusive VIP (Vertex Invariant Pupillometry) technology.
Measurement of the pupil is more difficult than it might seem because of the phenomenon of pupillary hippus or noise. The pupil is never entirely at rest but rather has normal, small continuous oscillations (±0.5mm). Therefore, when trying to measure the pupil, a single “snapshot” estimate is not a reliable predictor of the true mean size (because the clinician might catch the pupil at the maximum or minimum.) The NeurOptics™ Pupillometer records 3 seconds of data to ensure the effects of hippus are minimized. The average size (i.e., ensemble average) as well as the standard deviation of the pupil are reported by the instrument.
Another consideration is the importance of adjusting for differences in the distance from the lens of the Pupillometer to the front of the eye (the vertex distance). Vertex distance can vary up to 12mm in the normal population. This distance affects a pupillometer’s calculation of pupil size. If the Pupillometer is not calibrated correctly to adjust for this distance it can create an error up to 20%. A pupillometer should calculate the distance variation to maintain accuracy.
The NeurOptics™ Pupillometer is the only hand-held Pupillometer on the market designed to compensate for vertex distance variance as well as accounting for pupillary noise and reporting an average measurement.
A recent study showed that the NeurOptics Pupillometer has high repeatability and agreement in scotopic pupil diameter for repeated measurements and therefore high safety.

1st Post

thesniki5 — Wed, 04 May 2011 21:43:36 +0000

We are Live!!

And you are probably wondering, Why anyone would write a Blog about eye equipment ?
Great question!
Here we will discover together, anything and everything dealing with the machines, software and services that R.Melander & Associates has been providing since 1992 and will keep on providing for your own benefit.

Have you ever wondered how an Oculus Centerfield can increase your patient traffic?

What are the Benefits in owning a Canon CR-2?
What new Products will be appearing in the near future?

Besides Product descriptions and comparisons, we will get to hear from the actual company representatives.

You may also ask any question you may have wanted to ask but had no one to ask it!
This is and much more is the reason for this Blog.

So put on your thinking cap and make us work for it!! Ask us the hard Questions!!

Who from this industry would you like to hear an answer to that question that has been nagging at you for so long?

We look forward to exploring all the aspects of this interesting business.