Understand the Patients’ Attitude towards Presbyopia and the various Lenses Correction Options

Aim: To reveal the patients point of view about the selection of different presbyopic correction options from ophthalmic lenses and awareness about presbyopia. Methodology: In this Prospective study, feedback questionnaire based study in North India, 126 subjects were enrolled and the offline questionnaire and responses were recorded. Participants’ age ranged between 37 -75 years (using near correction). Evaluated the responses to know the reasons of chosen of different options for pre-presbyopia and presbyopia correction by the subjects and attitudes about it, its importance, and present conventional correction opinions including bifocals, progressive addition lenses and contact lenses. Result: Among the all participants, number of participants between the age group 37- 45 (pre-presbyopes) were 35 (27.77%), between 45-55 years of aged group were 60 (47.61%) participants and rest of 31 (24.60%) participants were between 55-75 years of aged group. Forty eight participants (38.1%) were already wearing a near correction while seventy eight (61.9%) were not wear any near correction. Out of 126, the 6 (4.76%) subjects were chosen a near visual correction and separated glasses, 88 (69.84%) subjects were chosen the bifocal lenses, rest of all 32 (25.89%) subjects chosen the PALs. And no one was using contact lens for near correction. Few similarities were observed as age–related (75.38%), total unaware of word presbyopia (85.71%), comfort, convenience and appearance concerned (63%). Conclusion: The spectacles were most preferred for the correction of presbyopia. Bifocals are taken by majority of population. After educating about Presbyopia and advantages of PALs, it was revealed that most of the subjects wanted to choose PALs because of comfort and convenience to see all distances but most of them denied due to cost and 4-8 days adaptation time. So most of the subjects were chosen the bifocal lenses even they knew the disadvantages of it like image jump and segment line, while comfort, convenience and cosmetic appearance were seen as the preferred than cost. But cost also played role while finalize the lens and its coatings types.

Quality of Life in Presbyopes with Low and High Myopia Using Single-Vision and Progressive-Lens Correction

This study evaluates the impact of the severity of myopia and the type of visual correction in presbyopia on vision-related quality of life (QOL), using the refractive status and vision profile (RSVP) questionnaire. A total of 149 subjects aged 41–75 years with myopic presbyopia were recruited: 108 had low myopia and 41 had high myopia. The RSVP questionnaire was administered. Rasch analysis was performed on five subscales: perception, expectation, functionality, symptoms, and problems with glasses. Highly myopic subjects had a significantly lower mean QOL score (51.65), compared to low myopes (65.24) (p < 0.001). They also had a significantly lower functionality score with glasses (49.38), compared to low myopes (57.00) (p = 0.018), and they had a worse functionality score without glasses (29.12), compared to low myopes (36.24) (p = 0.045). Those who wore progressive addition lenses (PAL) in the high-myope group (n = 25) scored significantly better, compared to those who wore single-vision distance (SVD) lenses (n = 14), with perception scores of 61.19 and 46.94, respectively (p = 0.029). Highly myopic presbyopes had worse overall QOL and functionality, both with and without glasses, compared to presbyopes with low myopia. High-myopic PAL users had a better perception outcome than SVD lens wearers. Low-myopic PAL wearers had a better QOL than SVD wearers.

Optical performance of progressive addition lenses (PALs) with astigmatic prescription

The progressive addition lens (PAL) is a spectacle lens design with progressive refractive power changes across the lens surface to provide sharp vision at different viewing distances for patients with reduced accommodative strength. It has gained in popularity not just for presbyopic patients, but also patients with occupational (office, driving, or digital device) and therapeutic (e.g., myopia control) needs. However, despite the increasing prevalence of astigmatism in adults > 40 years old who rely on PAL correction, no metric is available to reflect the optical variation in PALs with astigmatic prescriptions. Based on recent studies, four novel optical metrics sensitive to variation of refractive power across the lens surface of PALs have been developed. These metrics were used to compare the optical performance of PALs of various prescriptions, designs, and manufacturers. For each lens, the refractive power profile was first measured with a Moire-deflectometry-based instrument.The data was then exported and analyzed using a two-dimensional error map for each of the four metrics. The results revealed significant impacts of astigmatic prescription, providing evidence for the usefulness of these metrics in quantifying the optical performance of PALs for patients with astigmatic prescriptions.