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MP-3

The MP-3 is used to perform the microperimetry exam. It is a very accurate examination used to perform the functional analysis of the retina photoreceptor cells, of the cones and rods, in both photopic and mesopic media. This examination comes with a colour photography of the fundus on which the results superimpose to improve the understanding.

Summary
Description
Accessories
Cleaning
Documentation

Analysis of the sensibility in photopic and mesopic conditions
Built-in 12 Mega pixel non-mydriatic fundus camera
Real time tracking of the retina and the pupil
40° global analysis field (microperimetry)/45° (retinal)
Detection threshold from 0 to 34 dB
Stimuli intensity up to 10,000 asb
Stimuli gauge in Goldman I, II, III, IV, V
Luminance de fond 31,4 asb / 4 asb
Dioptrical compensation from -25D to +15D
Analysis of the fixation stability
Setting the stimuli (stimuli positioning, intensity, etc.) and the fixation point (positioning, size, etc.)
Superimposition of the results on the fundus photography
Presentation using Humphrey gray scale
Feedback function through sound guidance and flickering (variable size grid)
Superimposition is possible on OCT/OCT-A

Precise analysis of the visual sensibility and of the fixation

The MP-3 is a microperimeter equipped with a 3D tracking system of the eye and a non-mydriatic fundus camera used to perform microperimetry, to assess the sensibility of photoreceptor cells of the retina. The range of light intensities, from 0 to 34 dB and the max. luminance of stimuli at 10,000 abs makes possible detecting the lowest sensibilities.

This device is equipped with a 3D tracking system of the eye, real time, to correctly position the light stimuli on the retina and limit the patient’s fatigue, as it is quicker. During the examination, the stability of the fixation is also analysed to complete the diagnosis and follow-up the progress of the patient’s rehabilitation. This examination can be performed on its own. It lasts 40 seconds. The analyses are presented either on 2° and 4° circles or in BCEA (Bivariate Contour Ellipse Area).

Patient following-up and rehabilitation

The device itself, thanks to the marks given by the fundus, tracks and aligns to the patient’s eye (anterior and posterior segments) and positions again the results to perform a correct matching with the photography of the fundus. This technology is also used to quantify the evolution of the patients’ sensibility by comparing the similar test zones through a following-up. Then the second examination is automatically carried out in the same conditions as the first one.

The active rehabilitation of the patient (feedback function), mainly used for low-vision patients (with a very low visual acuity), is easily performed, in an optimised way, thanks to the sound guidance (beeps) and the additional visual stimulation (flickering) This procedure reduces the duration of rehabilitation sessions (10 min instead of 30-40 min).

Further analysis

The NAVIS-EX software interface provides an intuitive display of the results and proposes to the user the ability to totally set the examination, particularly using a 100%-adjustable stimuli grid. Thanks to this software, superimposing easily the microperimetry results to the patient OCT exams is possible, to perform a deeper multimodal analysis. To compare the results obtained with the classical visual field devices, a similar Humphrey gray scale is also available.

Legal mentions

These mentions are conforms to the French regulation and may vary depending on circumstances in each country.

Standard accessories

External fixation point
Response switch
Tactile stylus and holder
Eye shield
Cleaning air gun
Protective cover
Protective sheet for chinrest
Rehabilitation enclosures

Consumables

Protective sheet for chinrest

Good MP3S cleaning practices

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Retours d’expert :

Articles :

Structural and functional retinal changes in patients with type 2 diabetes without diabetic retinopathy – Qiannan Chai, Yimin Yao, Congrong Guo, Hong Lu, and Jingxue Ma
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9258434/

Long-term follow-up of retinal morphology and physiology after 2000 mg sildenafil overdose as a means of attempted suicide: a case report – Gen Miura,corresponding author Takayuki Baba, Ryusuke Hashimoto, and Shuichi Yamamoto
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9097436/

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