What Is EmbryoScope? – Use in IVF

By (gynecologist), (embryologist), (embryologist), (embryologist), (embryologist) and (invitra staff).
Last Update: 01/02/2024

The Embryoscope is a state-of-the-art incubator that allows for the uninterrupted viewing of embryos in real time. This incubator consists of a camera capable of capturing images every 10 minutes during the entire embryonic development of those embryos cultivated in vitro, and thus it is used for in vitro fertilization or egg donation treatments.

This novel incubation technology makes it possible to observe changes in the embryos, which would go unnoticed if a conventional incubator were used. Therefore, the Embryoscope offers more information, which is a great advantage in embryo selection.

What is Embryoscope?

The Embryoscope is a innovative incubator that incorporates time-lapse technology. This means that inside the incubator there is a camera that takes images of the embryos every 10 minutes, so that from the outside you can see a video of the embryonic development.

Other incubators with time-lapse technology include Geri®, Miri®, CCM (Cell Culture Monitoring System), Primo Vision™ or Eeva™.

This innovative incubator allows both biologists and future parents to observe the first hours of the future baby's life. What’s more, the embryo is developed without the need to be manipulated and taken outside for observation.


What really makes the Embryoscope incubator revolutionary within assisted reproduction is the incorporation of a camera that automatically takes images every 10-15 minutes.

Conventional incubators do not have a camera, so in order to observe the embryos they must be removed from the incubator. This type of incubator allows evaluations to be carried out at specific times, missing what happens between one observation and the next. Furthermore, it is not advisable to carry out many evaluations, as there are numerous studies that indicate that continuously removing embryos from the incubator can compromise their viability.

The following are the main advantages of the Embryoscope:

  • The embryos do not have to be removed for evaluation, which reduces the manipulation of the embryos.
  • More stable culture conditions. This avoids changes in temperature, light, pH, etc. that can cause stress and affect embryonic quality.
  • It allows us to see in real time what is happening at each moment, ensuring that we can choose the embryos with the greatest potential for implantation for transfer to the mother's uterus.
  • It provides a greater amount of information.

In short, the Embryoscope allows a greater amount of information to be obtained, without affecting the optimal embryo culture conditions.


The Embryoscope, in spite of all its advantages, also has some limitations that are discussed below:

  • Inability to rotate the embryos during observation, taking into account that they are three-dimensional structures.
  • Bubbles appear in the culture medium. This can lead to the loss of some event during the development of the embryos.
  • There is a small gap, since all the eggs are not injected at the same time. However, this gap is so minimal that it does not affect the results.
  • Higher cost of embryo culture and higher cost of IVF treatments.

In addition, there is a small time lag between embryos, as all oocytes are not microinjected at the same time. However, this time lag is so minimal that it does not affect the results.

Embryo culture with Embryoscope

After the extraction of the eggs and their fertilization with the sperm in the laboratory, the embryos generated will be deposited in the incubator for 3-5 days. During this time, the embryos must develop by increasing their number of cells day by day.

The embryos remain in culture plates that have all the necessary nutrients for their development. In addition, the incubators maintain low oxygen pressures to mimic the conditions of the fallopian tube, which is where the embryo would be found in a natural gestation during these early days.

WAt day 3 or 5 of embryo development, good quality embryos selected from the information provided by the Embryoscope can be transferred to the patient's uterus or cryopreserved for future attempts.

Embryo Selection

Until relatively recently, the only method of embryo sorting consisted of evaluating the morphological characteristics of the embryos under the inverted microscope. In this way, parameters such as cell size and symmetry, cell number, percentage of cell fragmentation, etc. are analysed.

The Embryoscope and its Time-Lapse technology allows the observation of the embryos from the moment of fertilization until they are transferred to the uterus. This ensures that more information is obtained and that embryo selection is made on the basis of morphokinetic characteristics.

Therefore, in addition to embryo morphology, the Embryoscope takes into account the kinetics, i.e. the exact time at which certain important events of embryonic development, such as the first cell divisions, have occurred.

For more information on embryo classification criteria, please visit the following article: How are embryos classified according to their day of development?

Assisted procreation, as any other medical treatment, requires that you rely on the professionalism of the doctors and staff of the clinic you choose. Obviously, each clinic is different. Get now your Fertility Report, which will select several clinics for you out of the pool of clinics that meet our strict quality criteria. Moreover, it will offer you a comparison between the fees and conditions each clinic offers in order for you to make a well informed choice.

Who needs Embryoscope?

The use of this technology is indicated for all types of patients receiving assisted reproduction treatment in which the embryos need to be cultivated in the laboratory, such as in vitro fertilization or egg donation.

However, the patients who can benefit most are those who have a large number of embryos, since it can be more complicated to determine among them which ones are optimal for transfer.

It is also advisable to use it in couples who have had several failed in vitro fertilization cycles. Specialist José Muñoz tells us that:

In principle, we are using it in patients with good embryonic quality and who do not achieve pregnancies, to see more, learn more and choose better the embryos that are transferred.

FAQs from users

What is embryoslide?

By Mercè Durban Llenas B.Sc., Ph.D. (embryologist).

The "embryoslide" is a culture plate for embryos and has the peculiarity that it has several wells for the culture of embryos separately and that it also fits in the timelapse incubators. Each type of timelapse incubator has its own specific plate.
Read more

Does the Embryoscope improve success rates?

By Blanca Paraíso M.D., Ph.D., M.Sc. (gynecologist).

There's quite a bit of controversy about that. In general, there is no clear evidence that time-lapse incubators improve success rates. However, there are studies that claim that more embryos will be able to reach the blastocyst stage due to better culture conditions and that higher gestation rates can be achieved by better embryo selection.

What other types of incubators are available for embryo culture?

By Blanca Paraíso M.D., Ph.D., M.Sc. (gynecologist).

The first incubators for embryo culture were large and the embryos of all patients were stored in the same space. Therefore, when a patient's embryos had to be removed for microscopic viewing or transfer, the temperature and gas conditions were temporarily altered, and this could affect all the embryos.

More recently, "benchtop" or "sandwich" type incubators have been developed. These have individualized compartments for each patient, so that opening one does not affect the others. In addition, the culture conditions are much better than with the first incubators, as they work at low oxygen pressures, so they imitate the conditions of the human body much better. The difference between these incubators and the Embryoscope® or other types of time-lapse incubators is that they do not have a built-in camera, so if you want to monitor the development of the embryos you need to remove them from the incubator to look at them under the microscope.

What has changed in embryo selection with the incorporation of Embryoscope?

By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist).

With conventional incubators, embryo selection is based on morphological criteria. To do this, the embryos must be taken out of the incubator and observed under the microscope. This whole process could alter the culture conditions, no matter how fast it is done.

However, the Embryoscope allows the analysis of the embryo kinetics. Furthermore, an evaluation can be made at any time during development, without having to remove the embryos from the incubator and, therefore, without altering the culture conditions.

How much does the embryoscope incubator cost when used in IVF?

By Marta Barranquero Gómez B.Sc., M.Sc. (embryologist).

Prices for embryo culture in Embryoscope type incubators may vary from clinic to clinic. However, the added cost of conventional IVF is usually around 300-500 euros.

What are the differences between Embryoscope and Embryoscope plus?

By Silvia Azaña Gutiérrez B.Sc., M.Sc. (embryologist).

The Embryoscope plus, like the Embryoscope, are incubators that incorporate time-lapse technology that allows continuous monitoring of the embryos without the need to remove them from the incubator.

However, the main difference between the two incubators is their capacity. The Embryoscope has a capacity for the embryos of 8 patients, while the Embryoscope plus can hold the embryos of up to 15 different patients.

Suggested for you

If you would like more information on time-lapse technology, you can visit the following article: What is time-lapse - Improving in vitro embryo development.

On the other hand, the objective of this incubator is to transfer the best embryo, so I recommend you read the following article: Embryo transfer.

We make a great effort to provide you with the highest quality information.

🙏 Please share this article if you liked it. 💜💜 You help us continue!


Aparicio-Ruiz B, Romany L, Meseguer M. Selection of preimplantation embryos using time-lapse microscopy in in vitro fertilization: State of the technology and future directions. Birth Defects Res. 2018 May 1;110(8):648-653. doi: 10.1002/bdr2.1226. PMID: 29714056. (Ver)

Armstrong S, Bhide P, Jordan V, Pacey A, Marjoribanks J, Farquhar C. Time-lapse systems for embryo incubation and assessment in assisted reproduction. Cochrane Database Syst Rev. 2019 May 29;5(5):CD011320. doi: 10.1002/14651858.CD011320.pub4. PMID: 31140578; PMCID: PMC6539473. (Ver)

Boueilh T, Reignier A, Barriere P, Freour T. Time-lapse imaging systems in IVF laboratories: a French national survey. J Assist Reprod Genet. 2018 Dec;35(12):2181-2186. doi: 10.1007/s10815-018-1302-6. Epub 2018 Sep 6. PMID: 30187427; PMCID: PMC6289930. (Ver)

Gallego RD, Remohí J, Meseguer M. Time-lapse imaging: the state of the art†. Biol Reprod. 2019 Dec 24;101(6):1146-1154. doi: 10.1093/biolre/ioz035. PMID: 30810735. (View)

Jiang VS, Bormann CL. Noninvasive genetic screening: current advances in artificial intelligence for embryo ploidy prediction. Fertil Steril. 2023 Aug;120(2):228-234. doi: 10.1016/j.fertnstert.2023.06.025. Epub 2023 Jun 30. PMID: 37394089. (View)

Mölder A, Drury S, Costen N, Hartshorne GM, Czanner S. Semiautomated analysis of embryoscope images: Using localized variance of image intensity to detect embryo developmental stages. Cytometry A. 2015 Feb;87(2):119-28. doi: 10.1002/cyto.a.22611. PMID: 25614363. (View)

Rauchfuss LK, Zhao Y, Walker D, Galantis T, Fredrickson J, Barud K, Shenoy C. Optimal Embryo Selection: The Irreplaceable Role of the Embryologist in an Age of Advancing Technology. J Hum Reprod Sci. 2023 Jul-Sep;16(3):227-232. doi: 10.4103/jhrs.jhrs_98_23. Epub 2023 Sep 29. PMID: 38045503; PMCID: PMC10688284. (View)

Swain JE. Could time-lapse embryo imaging reduce the need for biopsy and PGS? J Assist Reprod Genet. 2013 Aug;30(8):1081-90. doi: 10.1007/s10815-013-0048-4. Epub 2013 Jul 11. PMID: 23842747; PMCID: PMC3790111. (View)

Zaninovic N, Irani M, Meseguer M. Assessment of embryo morphology and developmental dynamics by time-lapse microscopy: is there a relation to implantation and ploidy? Fertil Steril. 2017 Nov;108(5):722-729. doi: 10.1016/j.fertnstert.2017.10.002. Erratum in: Fertil Steril. 2017 Dec 12;: PMID: 29101997. (View)

FAQs from users: 'What is embryoslide?', 'Does the Embryoscope improve success rates?', 'What other types of incubators are available for embryo culture?', 'What has changed in embryo selection with the incorporation of Embryoscope?', 'How much does the embryoscope incubator cost when used in IVF?' and 'What are the differences between Embryoscope and Embryoscope plus?'.

Read more

Authors and contributors

 Blanca Paraíso
Blanca Paraíso
M.D., Ph.D., M.Sc.
Bachelor's Degree in Medicine and Ph.D from the Complutense University of Madrid (UCM). Postgraduate Course in Statistics of Health Sciences. Doctor specialized in Obstetrics & Gynecology, and Assisted Procreation. More information about Blanca Paraíso
License: 454505579
 Marta Barranquero Gómez
Marta Barranquero Gómez
B.Sc., M.Sc.
Graduated in Biochemistry and Biomedical Sciences by the University of Valencia (UV) and specialized in Assisted Reproduction by the University of Alcalá de Henares (UAH) in collaboration with Ginefiv and in Clinical Genetics by the University of Alcalá de Henares (UAH). More information about Marta Barranquero Gómez
License: 3316-CV
 Mercè  Durban Llenas
Mercè Durban Llenas
B.Sc., Ph.D.
Graduate in Biology from the University of Barcelona (UB). In addition, Mercè Durban has a PhD from the Autonomous University of Barcelona (UAB) and is a Senior Clinical Embryologist by the ESHRE since 2008 and a Specialist in Assisted Human Reproduction and Clinical Embryology by ASEBIR since 2010. More information about Mercè Durban Llenas
License: 13.652-C
 Neus Ferrando Gilabert
Neus Ferrando Gilabert
B.Sc., M.Sc.
Bachelor's Degree in Biology from the University of Valencia (UV). Postgraduate Course in Biotechnology of Human Assisted Reproduction from the Miguel Hernández University of Elche (UMH). Experience managing Embryology and Andrology Labs at Centro Médico Manzanera (Logroño, Spain). More information about Neus Ferrando Gilabert
 Silvia Azaña Gutiérrez
Silvia Azaña Gutiérrez
B.Sc., M.Sc.
Graduate in Health Biology from the University of Alcalá and specialized in Clinical Genetics from the same university. Master in Assisted Reproduction by the University of Valencia in collaboration with IVI clinics. More information about Silvia Azaña Gutiérrez
License: 3435-CV
Adapted into english by:
 Romina Packan
Romina Packan
inviTRA Staff
Editor and translator for the English and German edition of inviTRA. More information about Romina Packan

Find the latest news on assisted reproduction in our channels.