TELESCOPES FOR THE VISUALLY IMPAIRED

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RIAZI A.; JOKARDERIS T.; KAZEMI MOGHADAM M.

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Journal: BINA Year:2003 | Volume:9 | Issue:1 (33) Page(s): 65-68

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Information Journal Paper

Title

TELESCOPES FOR THE VISUALLY IMPAIRED

Author(s)

RIAZI A. | JOKARDERIS T. | KAZEMI MOGHADAM M. | Issue Writer Certificate

Keywords

LOW VISIONQ3

TELESCOPEQ3

Abstract

Purpose: To evaluate the outcomes of distance TELESCOPE in persons with LOW VISION. Method: Sixteen patients with LOW VISION were supplied with distance TELESCOPEs and were followed for 8 months. The type of TELESCOPE was Galilean system (Eschenbach model) with 3X magnification. The patients received adequate training for use of the devices. We designed a LOW VISION questionnaire (LVQ) for evaluating the usefulness of TELESCOPEs. This questionnaire addressed process measures (frequency of use, length of continuous use, ease of use, rated importance, satisfaction,..). We also used magnification efficiency factor (MEF) for evaluating visual acuity. The MEF measures the effectiveness of a TELESCOPE in improving visual acuity. The ideal MEF is equal to one, higher and lower values indicate worse results. Result: Patients (13 male and 3 female) were between 15-40 (62.5%) and 41-80 (37.5%) years of age. The main ocular disorders were maculopathy (31.25%), AMD (25 %), diabetic retinopathy (12.5%), and others (25%). The patients in this study had no additional impairments. These patients were supplied with binocular (68.75%) and monocular (31.25%) TELESCOPEs. This study showed MEF>1 in 75% and MEF<1 in 25% of the cases, which shows that the TELESCOPEs were efficient. Patient satisfaction was expressed as high (37.5%), intermediate (50%), and low (12.5%). Ease of use was reported as difficulty at all (37.5%), a little bit of difficulty (50%), much difficulty (6.25%), and inability to use (6.25%). Frequency of use was several times each day (56.25%), weekly (37.5%), and never (6.25%). Length of continuous use included 15 minutes or longer (31.25%), 5-15 minutes (56.25%), and less than 5 minutes (12.5%). Rated importance consisted of extremely important (25%), quite a bit important (56.25%), slightly important (12.5%), and not at all important (6.25%). Conclusion: TELESCOPE is an effective means of improving far acuity in people with impaired vision. LOW VISION patients usually need low power magnification for far viewing for their task and activities. The proposed 3X TELESCOPE could be appropriate for them. This TELESCOPE offers good image quality and good visual field.

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References

EFFECTS OF LOW VISION AIDS ON DISTANCE AND NEAR VISION

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APA: Copy

RIAZI, A., JOKARDERIS, T., & KAZEMI MOGHADAM, M.. (2003). TELESCOPES FOR THE VISUALLY IMPAIRED. BINA, 9(1 (33)), 65-68. SID. https://sid.ir/paper/42286/en

Vancouver: Copy

RIAZI A., JOKARDERIS T., KAZEMI MOGHADAM M.. TELESCOPES FOR THE VISUALLY IMPAIRED. BINA[Internet]. 2003;9(1 (33)):65-68. Available from: https://sid.ir/paper/42286/en

IEEE: Copy

A. RIAZI, T. JOKARDERIS, and M. KAZEMI MOGHADAM, “TELESCOPES FOR THE VISUALLY IMPAIRED,” BINA, vol. 9, no. 1 (33), pp. 65–68, 2003, [Online]. Available: https://sid.ir/paper/42286/en

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