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| 2. |
- Airaksinen, P J, et al.
(författare)
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Visual field and retinal nerve fibre layer in early glaucoma after optic disc haemorrhage
- 1983
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Ingår i: Acta Ophthalmologica. - : Wiley. - 0001-639X .- 1755-375X. ; 61:2, s. 94-186
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Tidskriftsartikel (refereegranskat)abstract
- Computerized visual field testing with the Competer automatic perimeter including automatic profile perimetry revealed early glaucomatous field loss in 9 of 10 eyes with photographically demonstrable retinal nerve fibre layer (RNFL) defects after optic disc haemorrhages despite the fact than conventional routine perimetry had failed to do so. In 7 of these cases the Competer central pattern test was abnormal; in 2 cases field defects could be shown only when automatic high-resolution static profile perimetry was performed and directed according to the information present in wide-angle RNFL photographs. A field defect was also found in one of five eyes with no photographic RNFL changes. Visual field defects seem to occur in a higher proportion of cases with RNFL defects than was previously thought, but they can be very subtle and hard to find. There are, however, cases where in spite of the presence of an indisputable RNFL defect no visual field defects can be shown even with painstaking technique and conversely field defects may be present without RNFL defects. Automatic perimetry and RNFL photography complement each other in early detection and quantitation of glaucomatous damage.
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| 3. |
- Dyster-Aas, K, et al.
(författare)
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Computerized visual field screening in the management of patients with ocular hypertension
- 1980
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Ingår i: Acta Ophthalmologica. - : Wiley. - 0001-639X .- 1755-375X. ; 58:6, s. 918-928
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Tidskriftsartikel (refereegranskat)abstract
- Visual field testing which the Computer fully automatic computerized perimeter (Heijl & Krakau 1975) employing a supra-liminal screening test procedure was used in a material of 1013 eyes with ocular hypertension in which earlier routine perimetry (kinetic and static) on the Goldmann perimeter had yielded a normal result. The automatic screening was repeated if positive, and manual control perimetry was used in order to confirm or reject identified field defects. This procedure revealed field defects that could be confirmed at both automatic and manual perimetry in 3.6% of the eyes. In the control group the incidence of field defects found at manual perimetry during the same time interval was calculated at 0.4%. Thus automatic screening revealed several times more field defects than manual routine perimetry. Eyes in which repeated automatic screening had indicated defects which manual control perimetry failed to confirm, showed a high percentage of field loss at later follow-up. The results are discussed, and the conclusion is drawn that automatic screening is clearly superior to manual routine perimetry used at present. The most practical solution in many eye departments would be to use a computerized perimeter for the visual field screening of glaucoma suspects.
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| 4. |
- Heijl, A
(författare)
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Computerized perimetry in glaucoma management
- 1989
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Ingår i: Acta Ophthalmologica. - : Wiley. - 0001-639X .- 1755-375X. ; 67:1, s. 1-12
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Forskningsöversikt (refereegranskat)abstract
- The present article discusses the role of computerized perimetry in the management of patients with suspect and manifest glaucoma. The value of visual field examination is compared to that of inspection and photography of the optic disc and to some extent to retinal nerve fibre layer photography. Computerized perimetry is related to standard manual visual field examination. Guidelines are offered for the choice of test programs and for the interpretation of results.
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| 5. |
- Heijl, A
(författare)
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Lack of diffuse loss of differential light sensitivity in early glaucoma
- 1989
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Ingår i: Acta Ophthalmologica. - : Wiley. - 0001-639X .- 1755-375X. ; 67:4, s. 60-353
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Tidskriftsartikel (refereegranskat)abstract
- We studied the differential light sensitivity in 83 patients who were prospectively followed with computerized threshold preimetry and optic disc pathography because of suspect glaucoma. Eyes with media opacities were excluded from the analysis. Fourteen eyes developed progressive optic disc cupping and/or localized visual field loss. In this glaucoma group light sensitivity in the 10 best points in the visual field did not deviate more from estimated age-corrected standard values than in the remaining groups of 115 eyes with increased intraocular pressure and 18 normotensive eyes. The results do not support the concept that diffuse loss of differential light sensitivity should be common in early glaucoma.
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| 6. |
- Kalm, H, et al.
(författare)
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Non-stereo fundus photography as a screening procedure for diabetic retinopathy among patients with type II diabetes. Compared with 60D enhanced slit-lamp examination.
- 1989
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Ingår i: Acta ophthalmologica. - : Wiley. - 0001-639X .- 1755-375X. ; 67:5, s. 546-53
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Tidskriftsartikel (refereegranskat)abstract
- The spectrum of diabetic retinopathy, the need for fundus screening and the evaluation of two presumptive screening methods, was investigated in a population based study among patients with type II diabetes. Retinal evaluation was performed in 86.9% of the known diabetic population. Background diabetic retinopathy was detected in 37.8%, pre-proliferative in 1.1% and proliferative retinopathy in 3.8%. Diabetic maculopathy was found in 24.3% of the patients. Laser therapy was considered in 11.4% of the patients due to diabetic retinopathy, and in 14.6% when venous occlusive diseases were included. Two methods, a slit-lamp observation enhanced by a 60D lens and reading from two non-stereo photographs of the posterior pole, were evaluated among 154 patients willing and mentally capable of being examined by either method. The sensitivity of the photographic method was 87/97% (right eye/left eye) when detecting background retinopathy and 81/80% for maculopathy versus 69/61% and 79/63%, respectively, with the slit-lamp method. The photographic method could be applied in 93% of the patients mentally capable of cooperation. Only 5 or 6 patients could be examined per hour with the 60D slit-lamp compared with 30-35 examined by reading retinal photographs. The photographic method is recommended as an easy and reliable screening device for diabetic retinopathy among patients with type II diabetes.
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