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Clinical application of Heine® LAMBDA 100 retinometer (interferometer) in patients with cataract and ARMD

Poster Details

First Author: N.Botsevska BULGARIA

Co Author(s):    B. Kutchoukov   M. Karageorgieva   A. Yaneva        

Abstract Details


To evaluate the correlation between the potential visual acuity measured with HEINE® LAMBDA 100 Retinometer before surgery and the best corrected visual acuity measured post-operatively in patients with cataract and ARMD.


The prospective study was performed at the Clinic of ophthalmology, University Hospital 'Queen Joanna - ISUL', Sofia. HEINE® LAMBDA 100 Retinometer (pre-operatively) and a standard Snellen acuity chart (post-operatively) were used for all measurements.


The study included 32 eyes of 32 patients with different morphological types of cataract and ARMD who underwent uneventful cataract surgery by one surgeon during a six months period, from 01.09.2013 to 01.03.2014. All patients were examined preoperatively with the HEINE® LAMBDA 100 Retinometer under mydriasis and the measured potential postoperative visual acuity was recorded. The unit of measure of the retinometer is visual angle in arc minutes and is therefore equivalent to Snellen acuity. After uneventful phacoemulsification with posterior chamber IOL implantation through 2,75 mm clear corneal incision, the best corrected visual acuity in all patients was determined by Snellen table. The preoperative values were compared with the postoperative values at one month after the surgery.


In 31.25 % of the cases (10 eyes), the post-operative best corrected visual acuity was equal to the preoperative results of the retinometer; 65.6 % (21 eyes) had better visual acuity: 37.5 % (12 eyes) were within two lines and in 28.1 % (9 eyes) were within one line of the preoperatively determined visual acuity; 3.13% (1 eyes) had visual acuity with one line lower than the preoperatively measured.


The preoperative VA examination with a retinometer is a helpful method for evaluating the potential visual acuity of patients selected for cataract surgery with co-morbidity of ARMD. In 96.85 % (31 eyes) the predicted BCVA was either precise or underestimated with 1 or 2 lines. This proves to be very useful when counselling patients with cataract and ARMD about the possible outcome of cataract surgery and premium IOLS. FINANCIAL INTEREST: NONE

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