minutes per eye

Diagnosis of more than


eye diseases

What is it?

Endothelial count is an ophthalmological test that analyses the cells of the corneal endothelium (the innermost layer of the cornea, the main function of which is to keep it dry). The test indicates the quantity (its number per square millimetre), shape and size.

The number of endothelial cells decreases with age, the normal quantity in adults ranging between 1500 and 2500 per mm2. When this quantity is below 600-500, the cornea accumulates aqueous humour inside it and loses transparency.

It is important for the test to be performed before certain surgeries involving the cornea, and to monitor some diseases.

How is the endothelial count performed?

A specular or endothelial microscope is used to perform the test, which captures very precise images of the endothelial cells (number, size and shape).

The patient rests their chin and forehead on an appliance that takes the photographs.

4 keys to endothelial count

  1. It is a painless test.
  2. Pupil dilation is not necessary, but it can also be performed with the pupil dilated.
  3. No special prior patient preparation is required.
  4. Test duration 5-10 minutes per eye.

What diseases can be diagnosed?

Endothelial count is used for:

Associated treatments

IMO Institute of Ocular Microsurgery

Josep María Lladó, 3
08035 Barcelona
Phone: (+34) 934 000 700
E-mail: international@imo.es
See map on Google Maps

By car

GPS navigator coordinates:
41º 24’ 38” N – 02º 07’ 29” E

Exit 7 of the Ronda de Dalt (mountain side). The clinic has a car park with more than 200 parking spaces.

By bus

Autobus H2: Rotonda de Bellesguard, parada 1540

Autobus 196: Josep Maria Lladó-Bellesguard, parada 3191

Autobuses H2, 123, 196: Ronda de Dalt – Bellesguard, parada 0071

IMO Madrid

C/ Valle de Pinares Llanos, 3
28035 Madrid
Phone: (+34) 910 783 783
See map in Google Maps

Public transport

Metro Lacoma (líne 7)

  • Lines 49 & 64, stop “Senda del Infante”
  • Line N21, stop “Metro Lacoma”


Patient care:
Monday to Friday, 8 a.m. to 8 p.m.

IMO Andorra

Av. de les Nacions Unides, 17
AD700 Escaldes-Engordany, Andorra
Phone: (+376) 688 55 44
See map in Google Maps

IMO Manresa

C/ Carrasco i Formiguera, 33 (Baixos)
08242 – Manresa
Tel: (+34) 938 749 160
See map in Google Maps

Public transport

FGC. Line R5 & R50 direction Manresa. Station/Stop: Baixador de Manresa


Monday to Friday, 08:30 A.M – 13:30 PM / 15:00 PM – 20:00 PM

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