| 1. |
|
|
| 2. |
- Chekitaan, S, et al.
(författare)
-
The results of treatment of anisomyopic and anisohypermetropic amblyopia
- 2008
-
Ingår i: International ophtalmology. - : Springer Science and Business Media LLC. - 0165-5701 .- 1573-2630. ; 29:4, s. 231-237
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose To analyze the results of treatment of anisomyopic and anisohypermetropic amblyopia comparing full-time and part-time occlusion. Methods Retrospective analysis of case records of 100 patients of anisometropic amblyopia was carried out. Age, visual acuity, cycloplegic refraction, response, and compliance to treatment were recorded. Full-time occlusion (FTO) or part-time occlusion (PTO) was prescribed as treatment. Results The age of children ranged from 4 to 13 years (mean 7.65 years). In total, 66% of the patients were anisomyopic and 34% were anisohypermetropic. FTO was prescribed in 64 (64%), PTO in 29 (29%). Follow-up ranged from 1 to 24 months. The paired t-test revealed significant improvement of mean visual acuity in the FTO group (t = 13.272) compared with the PTO group (t = 7.386). A final visual acuity of 6/9 or better was achieved by 51% (34/66) anisomyopic amblyopes and 52% (18/34) anisohypermetropic amblyopes. Noncompliance to the treatment was 21%. Occlusion amblyopia was seen in four (4%) of the children. Conclusion FTO is superior to PTO for the treatment of amblyopia. The greatest amount of improvement in visual acuity was seen in simple myopes and the least in simple hyperopes. Compliance is critical for successful treatment of amblyopia.
|
|
| 3. |
- Boschloo, G., et al.
(författare)
-
A comparative study of a polyene-diphenylaniline dye and Ru(dcbpy)(2)(NCS)(2) in electrolyte-based and solid-state dye-sensitized solar cells
- 2008
-
Ingår i: Thin Solid Films. - : Elsevier BV. - 0040-6090 .- 1879-2731. ; 516:20, s. 7214-7217
-
Tidskriftsartikel (refereegranskat)abstract
- A small organic sensitizer, the polyene-diphenylaniline dye D5, was compared with the standard sensitizer N719 (Ru(dcbPY)(2)(NCS)(2)) in a dyesensitized solar cell investigation. In solar cells with relatively thin layers of mesoporous TiO2 (< 3 mu m) D5 outperformed N719 because of its high extinction coefficient. D5 showed also better performance than N719 in the case of sensitization of mesoporous ZnO. In solid-state solar cells, where the iodide/triiodide electrolyte was replaced by an amorphous hole conductor (spiro-OMeTAD), D5 gave promising preliminary results. The hole conductivity, observed in monolayers of D5 adsorbed at TiO2, may possibly lead to improved performance in such cells.
|
|
| 4. |
- Sivaramakrishnan, V. C., et al.
(författare)
-
Influence of convergence on vertical fusional vergence amplitude
- 2005
-
Ingår i: American Journal of Ophthalmology. - 0002-9394 .- 1879-1891. ; 139:3 Suppl., s. S46-
-
Tidskriftsartikel (refereegranskat)abstract
- Purpose: Deficiency in vertical fusional vergence amplitude (VFVA) is known to cause asthenopia and oculomotor imbalances. The measurement of VFVA however is confounded by its increase with convergence (Hara et al., 1998). A quantitative relationship between the two vergences is thus necessary to predict the VFVA at a given convergence angle. Here, we sought to derive such a relationship by measuring the VFVA at a range of convergence angles. Methods: 30 subjects (17–21 yrs) wearing red-green goggles fused a pair of red-green concentric circles projected on a computer monitor at a distance of 50 cms in a dark room. The horizontal and vertical separation between the red-green circles determined the convergence and vertical vergence demand respectively. The VFVA was measured at 8 equally spaced convergence demands ranging from 0.58° to 11.13°. The convergence demands were either systematically increased or randomly varied across different sessions. in each session, the convergence demand was kept constant while the vertical vergence demand was varied in steps of 0.03°. The maximum vertical vergence demand that could be fused determined the VFVA. Results: The subjects’ data was divided into four groups based on the range of convergence demands that could be fused. in all the groups, the VFVA increased linearly with the systematic increase in convergence demand (mean regression equation: y 0.15x 0.49). Randomizing the convergence demands did not show any significant change in this relationship (y0.12x 0.80). Conclusion: The VFVA increases linearly in the range of convergence demands tested. The linear regression equation derived could be used in a clinical setup to predict the VFVA at a given convergence angle
|
|
