Mr Akash Raj MBBS & MD (AIIMS), MRCS, DRCOphth, FRCS, FRCOphth, PG Dip (Distinction) Consultant Ophthalmologist, Glaucoma specialist and Cataract surgeon, Birmingham, Dudley, Midlands, UK
Mr Akash Raj MBBS & MD (AIIMS), MRCS, DRCOphth, FRCS, FRCOphth, PG Dip (Distinction)Consultant Ophthalmologist, Glaucoma specialist and Cataract surgeon, Birmingham, Dudley, Midlands, UK 

Why is corneal thickness important?

Goldmann applanation tonometry measurements are affected by the central corneal thickness (CCT). When Goldmann designed his tonometer, he estimated an average corneal thickness of 520 microns to cancel the opposing forces of surface tension and corneal rigidity to allow indentation. Wide variation exists in corneal thickness among individuals. Thicker CCT may give an artificially high IOP measurement, whereas thinner CCT can give an artificially low reading. Some have suggested a correction factor of upto 3 mm Hg (Millimeters of Mercury) for every 50 microns of corneal thickness.


It is advisable not to hold your breath or sqeeze eye lids when your eye pressure is checked using the Goldmann applanation tonometer as that might falsely raise your eye pressure.


The National Institute of Clinical Excellence (NICE) has highlighted the importance of corneal thickness (please look at table 3 page 12 of this NICE Glaucoma Guideline ,Number 85 for detail:

Private & NHS patients

How to see Mr Raj

For private patients & referrals


Mr Akash Raj 

Consultant Ophthalmologist, Glaucoma specialist & Cataract surgeon


Stourside Hospital (part of West midland Hospital)

60 Bradley Road



01384 505 183


(Alternate Thursday PM)



01384 632 640


Private Secretary: Liz Carter : 01384 632 636 






Mr Akash Raj

Consultant Ophthalmologist, Glaucoma & Cataract specialist


BMI The Priory Hospital, Edgbaston

(Thursday PM)
Priory Rd, Birmingham, West Midlands
B5 7UG
0121 446 1638
(Consultation by appointment only)
Private Secretary:
Liz Carter
Direct Line: 01384632636 




For NHS Referrals through GP/Opticians


Mr Akash Raj

Consultant Ophthalmologist (Glaucoma Lead)


Russells Hall Hospital

Pensnett Road


West Midlands



Phone: 01384456111

Extn. 5815 (NHS Secretary: Lyn Eaton)



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